Friday, December 1, 2023
HomeRoad TripMotorhome Leisure Batteries- Full charging & upkeep information

Motorhome Leisure Batteries- Full charging & upkeep information

Bought a motorhome, campervan or caravan? Need to know easy methods to care on your home leisure battery, easy methods to cost it, preserve it and usually hold it going, particularly in winter? Or frightened about it dropping or not holding cost? Right here’s every little thing you must find out about your motorhome leisure battery.

Don’t overlook to seize your FREE motorhome upkeep guidelines beneath

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Motorhome Leisure Batteries

Let’s be honest- most new motorhomers or campervanners don’t actually take into consideration their batteries till they’ve an issue. Both the ability goes, or the battery isn’t holding a cost or they arrive at their motorhome or camper after winter to search out every little thing is flat and there’s no method to repair it.

If that’s you, don’t worry- you’re not alone. However a primary degree of battery upkeep is vital to maintain your leisure batteries wholesome and glad for his or her lifespan- and make that life span so long as it may be. Your motorhoming will even be a lot simpler in the event you perceive what your leisure battery is there for and how one can assist it!

It may possibly additionally assist in your yearly motorhome habitation verify (or in the event you do your individual) in case you have a primary understanding of the way it all works.

Motorhome leisure batteries for novices

So, let’s begin firstly and go over some fundamentals.

When you’ve got a motorhome or campervan, you’ve most likely received each an engine starter battery (the one which begins your automobile and is usually discovered within the engine bay) and a leisure or home battery.

NOTE: In case you are shopping for a brand new CARAVAN, they’re usually provided with no leisure battery, so you have to to purchase one earlier than your first journey.

The motorhome leisure battery is often NOT within the engine, and is discovered someplace within the camper habitation space. Ours is below the driving force seat, however on our final van it was below the ground close to the oven. Verify your motorhome guide in the event you’re unsure.

On this submit, we’re going to be focussing simply on the leisure battery, so that you shouldn’t must go anyplace close to the engine bay! We’ll be speaking in regards to the fundamentals of leisure batteries, how to decide on one, easy methods to care and preserve them (particularly in winter!) and what to do if they’re dropping cost, received’t cost or appear to be utterly lifeless.

Don’t worry- this submit isn’t for skilled electricians. You don’t want to grasp amp hours, volts or ‘deep-cycle’ as a way to care on your motorhome batteries. And no maths is required (okay, a teeny tiny bit may be- however I promise you are able to do it.)

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Why do you want a motorhome leisure battery?

The home leisure battery runs all the ability within the habitation space of your van, everytime you’re not plugged in to mains energy. It’s used for habitation lights, water, rest room, blown-air camper heating, 12v chargers and anything electrical.

IMPORTANT– the leisure battery solely provides 12v in your van. So, in case you are on battery energy, you CANNOT use your 240v (regular 3-pin plug) sockets. So no electrical kettles, or toaster, or microwave (until you may have a motorhome generator or an invertor- however that’s a submit for one more day.)

So as to have the ability to present that energy, the battery ‘shops’ it. Consider it like a bucket of water. You might want to put energy into the battery. When it’s full, no extra energy will be saved. Then, as you utilize the ability, it’s drained down. As soon as it’s gone, it’s gone till you replenish the ability.

The large distinction between your campervan leisure battery and the bucket of water is that you simply CANNOT utterly empty the leisure battery- doing this can kill it. In actuality, you’ll be able to solely use about 50% of the ability in your leisure battery earlier than you must cease draining and begin recharging.

Can’t I simply plug into mains energy on a regular basis? Do I really want a leisure battery in my motorhome?

You possibly can, however the different job of a leisure battery is to easy out irregularities within the energy. With out this, you could possibly find yourself damaging home equipment as a result of energy spikes or having home equipment which want fixed energy (like alarms or trackers) going on and off usually as a result of energy fluctuations.

Nonetheless, in the event you plan to spend most of your time in your motorhome, campervan or caravan on a campsite, you don’t want to purchase a top-of-the-range leisure battery as you received’t be placing it by way of as many cycles as somebody who primarily stays off-grid.

Why is your motorhome or camper leisure battery dropping cost?

The opposite factor to grasp is that the ability in your battery is just not like water in a sealed container. Similar to water in a bucket left exterior on a heat sunny day, the ability in your leisure battery will slowly… disappear (no, it doesn’t evaporate like water!)

It’s like while you get a static shock and your hair stands on finish. Finally, that power simply dissipates. The identical factor occurs to your motorhome batteries (each engine and leisure).

That’s why you usually return to your motorhome, camper or caravan after winter or a interval of inactivity and discover the batteries flat. Even in the event you’ve turned every little thing off and also you’re satisfied nothing is inflicting the ability to empty finally, over time, the battery shall be totally discharged and/or lifeless.

However don’t worry- with correct upkeep and care, you’ll be able to defend your batteries, even in chilly climate, and use them for a number of years.

motorhome storage

Distinction between an engine battery and a home leisure battery

The two sorts are usually not the identical and you should purchase the suitable battery for the job.

Engine starter batteries (or automotive batteries) have thinner plates and are designed for brief, sharp bursts of excessive energy as a way to crank your engine and get it going.

Leisure batteries are designed for gradual launch over a chronic time period, adopted by re-charging. That is known as ‘deep-cycling’. Leisure batteries are generally known as auxillary batteries too.

“Can I take advantage of a automotive battery as an alternative of a leisure battery?”

You can’t use a leisure battery in your engine (it doesn’t have the ‘oomphf’ to get the engine began), however you could possibly use an engine battery as a leisure in the event you actually actually needed to. However it won’t be anyplace close to as environment friendly and we don’t advocate it.

There’s a sort of battery which may do each jobs (an AGM battery), however it’s not generally used for motorhomes.

What number of leisure batteries do you want in your motorhome or campervan?

Nice question- and the straightforward reply is, it is determined by your van and the way you intend to make use of it.

On our final motorhome, we had an electrical mattress. We cherished the concept of this, as a result of it made life simpler, however, in actuality, that factor was stupidly power-hungry. Because of this, we determined to suit a second leisure battery into the motorhome (and it’s one of many many causes we determined to simplify and downsize our motorhome.)

IMPORTANT: You MUST solely put a leisure battery within the applicable battery compartment. If there isn’t area for a second battery, you shouldn’t match one. Additionally, you have to to declare becoming a second leisure battery to your insurance- they may require you to get it professionally checked.

On our newest van, and in a number of vans we’ve used, there has solely been one leisure battery- and it’s been completely high-quality. We love going motorhome wild tenting, and keep off-grid away from campsites as usually as we will, and we nonetheless don’t really feel the necessity for a second leisure battery (though we do have a photo voltaic panel, which makes an enormous distinction.)

Motorhome wild tenting guides for the UK & Europe

In fact, the extra batteries you may have, the LONGER you should have battery energy for. Notice that I say longer, no more. You possibly can’t match 20 12v leisure batteries and all of a sudden have 240v energy.

How lengthy ought to a motorhome leisure battery final?

It is a widespread query, with two potential solutions.

Do you imply how lengthy can you utilize electrical gadgets in your camper earlier than the battery ought to now not be used? That is determined by the scale of your battery and the way a lot energy you’re utilizing. The extra you may have switched on, and the extra ‘power-hungry’ the equipment, the faster the battery will drain.

The quantity on the battery (for instance, ‘110’) refers to ‘Amp-hours’ (Ah) which is the capability of the battery- or how a lot energy it may possibly retailer. In easy phrases, it may provide 1A for 110 hours or 10A for 11 hours.

Or do you imply how lengthy do you have to hold a leisure battery earlier than changing it for a brand new one? The lifetime of a leisure battery is determined by a number of issues:

  • how continuously it’s discharged
  • how deeply it’s discharged
  • how shortly it’s recharged

To ensure that your battery to final so long as potential, you must hold it in an excellent state of cost. If it discharges to too low a degree and is left for weeks (and even months throughout winter) with out being recharged, then it would most likely die. And also you want a brand new one.

With correct care, you’ll be able to count on a motorhome leisure battery to final round 5 years earlier than it needs to be changed. In fact, if issues go fallacious or aren’t maintained, you could possibly find yourself shopping for a brand new leisure battery yearly!

Kinds of motorhome leisure batteries

There are numerous sorts of leisure batteries, and also you’ll hear all kinds of thrilling phrases thrown about like ‘lead-acid’, ‘moist batteries’ and lithium ion. Let’s take a look on the choices.

Lead-acid leisure batteries

The commonest type of leisure battery in a motorhome or camper is a lead-acid (though lithium ion is rising in popularity). These are additionally known as ‘moist’ batteries as a result of… they’ve liquid inside them.

Lead acid batteries will self-discharge over time. The pace of this is determined by make, age and so forth. You want to have the ability to hold any eye on electrolyte ranges, and prime up as crucial.

You may get ‘open’ and ‘sealed’ lead-acid batteries. Open are the kind you need to prime up. Sealed are the ‘maintenance-free’ ones (extra on these beneath.)

Lithium ion leisure batteries

Lithium batteries are one other type of deep cycle battery. They’re totally self-contained (upkeep free) and have their very own cost supervisor. As a result of they don’t have lead, they sometimes weigh round half as a lot as an equivelant lead-acid battery- this could actually assist along with your motorome payload.

They may also be discharged (totally) and quickly recharged whereas retaining a steady voltage degree. They’re nice for motorhome homeowners who use their automobiles ‘off-grid’. They don’t self-discharge, are largely maintenance-free and work nicely alongside an inverter.

Nonetheless, they’re expensive- as a lot as 5 instances the price of an equal, good high quality, lead-acid battery

Motorhome touring in Spain- Cabezo Negro
How usually you discharge and recharge your motorhome leisure battery could make a distinction!

Different sorts of leisure batteries

  • AGM batteries – Absorbent Glass Mat batteries have matting between the plates that filter the sulphuric acid contained in the battery, making it extra resilient and capable of stand up to a better variety of charging cycles than a typical lead-acid. They can be utilized as each starter and leisure batteries. The draw back is that they’re much dearer to purchase.
  • Gel batteries – These are utilized in automobiles with a excessive danger of injury or crashing, reminiscent of quad bikes or jet skis. They use gel reasonably than acid, which reduces the chance if they’re broken in an accident. Some international manufacturers of motorhomes or campers are actually fitted with these.
  • Upkeep-free batteries – Standard batteries have detachable caps to permit the acid ranges to be checked and topped up with deionised water. A brand new choice is a maintenance-free battery, which is a sealed unit and can’t be topped up, however doesn’t have to be, as a result of means it’s charged.

Shopping for & Selecting a motorhome or camper leisure battery

If you end up needing to purchase a leisure battery for a motorhome, campervan or caravan, it may be slightly overwhelming.

As a tough information, the heavier the battery is, the extra lead it accommodates= means to carry a bigger capability of cost. If you’d like a deep biking leisure battery (which you most likely do) a heavy battery is an effective place to start out.

If you will be spending most of your in a single day stops on motorhome membership campsites with mains hookup, an affordable battery may be all you want. When related to a mains provide, the battery is then solely there to ‘easy out’ the 12V output from the camper’s built-in charger.

Nonetheless, in the event you plan to make use of CS/CL websites with out electrical hook-up or need to keep off-grid, an excellent high quality, high-capacity battery is important. Additionally, in the event you like to remain in a single place for some time (and due to this fact the alternator isn’t recharging the battery), you’ll want an excellent leisure battery for that too. Solely purchase batteries which were manufactured within the final 12 months- previous batteries may have already got sulphur corrosion.

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In addition to selecting the right mannequin, you additionally must be sure you aren’t being offered a starter battery instead of a leisure battery.

The most suitable choice to make sure you get a leisure battery appropriate for a leisure automobile is to purchase one from the Verified Leisure Battery Scheme.

Nationwide Caravan Council Verified Leisure Battery Scheme

This scheme was arrange by the Nationwide Caravan Council to provide homeowners peace of thoughts in regards to the high quality of their battery. When you purchase a leisure battery which shows the scheme’s emblem, then it has been deemed dependable and match for function by the NCC.

All verified leisure batteries will show the scheme’s emblem in addition to which class it falls into.

NCC accreditation
NCC Caravan and Motorhome Leisure Battery Verification Scheme

How are leisure batteries categorised below the NCC scheme?

There are three classes of verified leisure battery:

  • Class A – Excessive storage capability batteries to be used by caravan and motorhome customers preferring to function away from {an electrical} hook-up level (individuals who do numerous off-grid tenting)
  • Class B – Designed for customers who use electrical hook-up on the vast majority of their journeys, but in addition require better energy capability. Gadgets reminiscent of motor movers (for caravanners) are more likely to require a Class B battery even when electrical hook-up is used
  • Class C – Verified batteries appropriate to be used when electrical hook-up is just not out there for a short while solely

Are all leisure batteries lined by the scheme?

At current, only some producers are included. Extra are anticipated to hitch within the close to future, and the NCC will publish updates as and when applicable. You’ll find out extra right here.

What impacts a leisure battery’s efficiency?

There are numerous issues which may have an effect on the efficiency and lifespan of a battery.

  • Age – Most batteries have a marked lower in efficiency after 5 years.
  • Measurement – Clearly, the larger your battery (in Ah, not bodily dimension), the longer you should use your home equipment for.
  • Consumption– Having stated that, in the event you’re working numerous electrical home equipment directly, you’ll drain the battery sooner and it’ll have to be recharged sooner and way more usually. The extra you do that, the extra you degrade efficiency and lifetime of the battery.
  • Temperature – Batteries hate chilly. The colder the temperature, the more severe the battery goes to carry out. They actually do sulk. When you verify your battery, you’ll see the ‘amp hours’ score shall be primarily based on a loopy heat temperature of round 25c, with every diploma decrease inflicting a 1% drop in efficiency. For instance, a 110Ah battery which is working in 15c temperature will truly solely carry out as a 100Ah. If that’s not cause sufficient to go spend your winters in Spain, I don’t know what’s!

The actual fact of the matter is, you are able to do calculations all you want, however all the time err on the facet of warning and assume you must recharge your leisure battery extra continuously, and for longer, than you may suppose.

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Taking care of your Leisure Battery

So, in addition to a bucket of water, consider your battery like a pampered canine. It needs to be heat (however not TOO heat), dry, given consideration, fed usually and given a lot of day without work to sleep. (I’ve a cocker spaniel curled up on my lap proper now and consider me, the analogy is working!)

Listed below are some tricks to get probably the most out of your leisure battery.


  • Cost your battery after buy. Bear in mind, they’re discharging whereas simply sitting there on the shelf in Halfords.
  • Be sure to set up the battery accurately, conserving it upright and correctly secured (most motorhomes have straps for this. Use high-quality clamps for an excellent connection.
  • Hold the terminals clear and free from corrosion. Some individuals add a light-weight coat of vaseline/ petroleum jelly- we don’t do that however we do verify them usually.
  • Be sure to know which home equipment are consistently drawing on the battery. Trackers, alarms or safety, rearview cameras, wifi dongles or the clock on the dashboard are all widespread culprits.
  • Recurrently verify the water ranges within the battery. You do that by unscrewing the caps and ensuring the electrolyte degree covers the lead plates. If not, prime up with deionised water as required. All the time put on full security tools when inspecting and sustaining the battery– that stuff is corrosive!
  • Be sure that the fuel aid tube stays securely in place.
  • Recharge the battery as soon as it reaches 50% energy. By no means permit a battery to utterly run down as this could kill the battery/ vastly scale back the lifespan
  • When you aren’t going to be utilizing the battery for some time, give it a correctly good cost after which retailer it in a cool surroundings with an applicable charger. You possibly can go away within the van in case you have an clever charging system or a trickle charger.


  • Go away your battery in a discharged state for a chronic time period When you’ve been utilizing the battery, make sure that it’s charged up once more earlier than you permit it in storage/ unused. When you don’t do that, a white deposit will type on the plates and the battery shall be unusable (that is known as sulphation)
  • Over-charge your leisure battery. A completely charged 12V battery ought to have a voltage of 12.7V. Overcharging will be simply as dangerous as undercharging for killing off a battery.
  • Over-discharge your battery. If the voltage falls to 11.70V cost instantly! If it will get a lot decrease, chances are you’ll not have the ability to reserve it.
  • Reverse the polarity in your charging leads- this could injury the battery
  • Let something fall throughout the battery terminals. A 12V battery is unlikely to trigger electrocution, but when the terminals or the cables are shorted-out, it may possibly trigger a hearth in your motorhome.
  • Neglect that the stuff in a lead-acid battery is ACID. I’ve seen it burn by way of denims when my husband by accident spilt some. Watch out and hold nicely away from children and pets.
  • retailer your battery anyplace too heat, or purchase a radiator, or in direct daylight

Sustaining your leisure battery throughout Winter

Or, extra usually “My motorhome has been in storage for winter. Why is the battery now flat?”

Prepare RV motorhome or campervan for winter storage- winterizing tips for campers and leisure vehicles
Caring on your motorhome in winter- take care of your leisure battery

Sadly, most individuals solely uncover they’ve an issue with both their starter battery or their leisure battery after they return to their automobile after a number of months. Usually that is after winter (though on this age of world lockdowns and pandemics, you’ll most likely not be utilizing your motorhome as a lot as you deliberate!)

The double-trouble is that you’ve each lack of use (time whereas the battery quietly discharges) and chilly (which makes the battery depressing.) The 2 collectively imply that the battery discharges extra shortly, and is much more reluctant to get better afterwards.

Listed below are some ideas for caring for and sustaining your leisure battery over winter:

READ MORE: Full checklist of every little thing you must do to put together your motorhome for winter storage

  • Give it an excellent cost earlier than you place it away for winter
  • Go away it with some type of trickle charger, however leaving it plugged into mains for months may injury the battery too. (The usual on-board charger in lots of motorhomes may cause over-charging)
  • When you’ve got an clever battery charging unit (which displays the battery and adjusts charging voltage and present, you’ll be able to go away that plugged in all winter.
  • In case you are unable to connect a charger completely, both cost your leisure battery as soon as a month or take away it from the automobile, convey it dwelling and put it on cost. In fact, watch out if this implies your alarm/ tracker turns into disabled- learn extra about motorhome safety right here
  • Be sure that it doesn’t get too chilly. When you’ve got inner battery storage within the motorhome, it needs to be okay until it’s REALLY chilly, however in case you have exterior storage you may need to take away it to keep away from injury.
  • In case you are storing the van at dwelling and have an influence provide, you’ll be able to put it on a timer (4/5 hours a day) so it doesn’t overcharge
  • You should utilize a photo voltaic panel to offer cost to your battery. Simply bear in mind that photo voltaic panels are much less efficient in winter (weaker daylight) and likewise in the event you use a motorhome cowl it could cowl the photo voltaic panel, making it ineffective.

The way to cost a leisure battery on a motorhome or camper

Most motorhomes and campers have a number of methods of charging the leisure battery:

  • Through the mains when on hook-up (battery charger)
  • Utilizing the engine (alternator) when on the road- that is usually known as ‘split-charge’
  • Photo voltaic panel
  • Generator
  • Wind turbines (these are widespread on boats, however much less widespread on motorhomes or campers.)

The way to cost a leisure battery from mains/ electrical hook up

This one is straightforward. Offering you may have a battery charger (extra on these beneath), you simply plug within the mains, flip it on if not already, and chill out. It’s that easy on most fashionable motorhomes and campervans.

The way to cost a leisure battery whereas driving

Bear in mind, it would take time to recharge a battery. Operating your engine for quarter-hour is just not going to be sufficient.

Additionally, the alternator was not designed for leisure batteries- it was designed for starter batteries and that’s its fundamental focus. So you must permit time for the starter battery AND then the leisure battery to be recharged (it’s not linear like that, however all you must know is it wants time!)

Additionally, because the battery voltage will increase (it will get extra charged), the present supplied by the alternator will reduce- because it must for the engine battery. So an alternator is unlikely to totally cost a leisure battery.

Discharge charges and maths. (DO NOT PANIC…)

For instance, in case you have a 100Ah (amp hour) battery (let’s ignore the temperature and simply assume it’s working to 100), and also you discharge (use) 50%, you must change 50Ah

Let’s say the engine alternator has sufficient to provide 5A to the leisure battery. It can take 10 hours to recharge. That’s 10 HOURS of driving. Continuous.

When you’ve got a much bigger battery, or two leisure batteries, you have to even longer.

Fortunately, many motorhome on-board battery chargers can provide 15-20amps, so it takes rather a lot much less time- 2 or 3 hours. Let’s have a look at these in additional element.

Motorhome leisure battery guide
Motorhome leisure battery information

Motorhome Battery chargers defined

Utilizing the mains to cost the leisure battery (and generally the engine battery) is widespread in most motorhomes, however you have to a battery charger. There are a number of sorts of charger available- they do completely different jobs.

Fundamental chargers

The best is a primary unit which supplies a hard and fast output, often round 13.8 volts. These primary chargers are hardly ever utilized in motorhomes today, as a result of multi-stage chargers are usually not way more costly and are significantly better for the well being and lifespan of your battery. Fundamental chargers are usually not designed to be left related long-term.

Multi-stage charger

A multi-stage charger offers cost at completely different voltages and currents relying on the state of cost of the battery. These are additionally known as upkeep chargers, though not many are designed to be left related permanently- you need to use a timer or disconnect and reconnect usually.

Normally there are 3 levels:

  • Bulk cost mode: offers a most voltage and present to recharge the battery shortly. This often takes it to round 80% full.
  • Absorption: Offers a relentless voltage, however reduces present. Takes it to just about full cost.
  • Float cost: Offers lowered voltage and low present to maintain it close to totally charged with out injury.

You may get multi-stage prices with much more ranges, however the tough thought is identical.

Do not forget that a battery wants a charger with an output of not less than 10% of the battery’s capability. For instance, a 100Ah battery will want not less than a ten amp charger. Any much less will scale back the capability.

How large a battery charger do you want?

The larger the charger (16A as an alternative of 4A), the faster it would cost up your battery. When you keep in mind our earlier instance about needing to interchange 50% of a 100A battery, a 16A charger would do it in simply over 3 hours, whereas a 4A one would want 12.5 hours.

Photo voltaic Energy

Photo voltaic panels are available two fundamental sorts: monocrystalline and polycrystalline. The main distinction between the 2 varieties is dimension – a poly panel will sometimes be about 5% bigger than a mono for a similar quoted output.

Photo voltaic panels will be inflexible or flexible- for vans we advocate inflexible as they’re extra dependable and don’t usually have to be walked on.

How large a photo voltaic panel do I want?

The reply to this has nothing to do with the scale of your motorhome leisure battery. It has to do with how a lot power you intend to make use of. A small campervan with only some LED lights will want MUCH lower than an 8m motorhome with a fridge, heating, a 12v motorhome TV and who needs to cost a lot of electrical gadgets. The commonest dimension of photo voltaic panel is 80- 100W.

Additionally, photo voltaic panels are hardly ever nearly as good as they are saying they’re. For instance, a 100W panel may technically produce round 8A, however in actuality it is going to be that good – 5 or 6 amps may be extra real looking. On cloudy days it’s even much less.

Motorhome using solar power to charge the leisure battery
Motorhome utilizing solar energy to cost the leisure battery

Regulator for solar energy

When you’ve got a photo voltaic panel, you have to a regulator to regulate the cost going into the battery.

A typical photo voltaic panel in full daylight may produce round 22 volts, which is just too excessive for a 12-volt battery. The job of the regulator is to cut back this to a secure charging degree.

There are numerous completely different photo voltaic regulators out there. Cheaper choices embody easy cut up cost or primary fastened voltage charging methods; multi-stage charging is best in the event you can.

Some electrical models (reminiscent of Sargent) are capable of take the ability from the photo voltaic unit and to up each the leisure and engine batteries as required.These methods usually have a most photo voltaic wattage that they will deal with, so make sure that the panel you select doesn’t exceed it.

Dangerous odor when charging

Often, you may expertise a ‘rotten egg’ odor when your battery is recharging. This often signifies that the battery is being overcharged. The odor comes from gasses being emitted. These gasses may probably ignite and trigger explosions.

When you get this odor, verify if the battery feels scorching to the contact. If is does, the battery is being overcharged and could possibly be irreparably broken. Even with no odor, concentrate on the temperature of your battery whereas charging as a scorching battery usually means there’s a drawback.

All the time have a window open to permit gases to flee whereas the battery is charging.

DO NOT disconnect the battery from the charger whereas it’s plugged into the mains- this might trigger a spark. Disconnect the mains, then take away the charger.

How do you repair a battery which received’t maintain a cost?

A trickle charger is one of the best ways to attempt to repair a leisure battery that won’t maintain a cost. Except it’s been run too low, through which case, see beneath.

How do you revive a leisure battery?

When you’ve by accident run your battery too low, gradual cost it for not less than 24 hours and see if it revives. You are able to do this by way of a battery charger or plugging the motorhome into the mains.

Take the battery out of your camper, join it to a good battery charger, go away it on trickle cost for a few days (3-4 amps),then verify the voltage.

If it’s not rising, the battery might be unfixable and you have to to interchange it.

Checking a battery’s cost degree

Many motorhome leisure batteries have a light-weight or show to indicate the cost degree. They will not be 100% correct, however it provides you with a tough thought.

A hand-held unit is usually extra correct, however pointless in most conditions. When you use a hand-held meter, 12.7+v means totally charged, whereas 12v or beneath means discharged. 12.4v is about 50%

You may as well use a hydrometer to measure the electrolytes within the cells. The studying needs to be between 1.1 (discharged) and 1.28 (totally charged).

Earlier than a studying, flip off all electrical home equipment, together with alarms, fridges and clocks that run off the battery. Failure to take action will lead to an inaccurate studying. Additionally, don’t do a check for 4 hours after driving or utilizing a battery charger- a not too long ago used battery will give a better studying

Secure dealing with of a Lead Acid battery

Battery fuel is explosive. If it ignites, it may possibly trigger burns or extreme accidents. ies and flammable and lead-acid is corrosive. Earlier than you go anyplace close to your lead-acid battery, do the next:

  • Put on applicable protecting clothes, gloves and eye-wear. Be warned- the acid can injury clothes
  • All the time take away the unfavorable terminal first when disconnecting a battery
  • By no means smoke or have a unadorned flame close to a battery
  • Sparks can generally happen when connecting up a battery and good high quality clamps are wanted. Short-term crocodile clips, usually provided with battery chargers, are usually not appropriate for everlasting connections.

Different posts you may discover helpful:

Got a motorhome, campervan or caravan? Want to know how to care for your leisure battery, how to charge it, maintain it and generally keep it going, especially in winter? Or worried about it losing or not holding charge? Here's everything you need to know about your motorhome leisure battery.

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