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 Topic: is this a leisure battery?
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09/9/2024 at 12:28pm
Location: London
Outfit: Lunar Cosmos 524
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I think you may be missing a more crucial point than what type of battery it is for recharging purposes!
If it's 10 years old, or more, then with some certainty NOT anything other than a lead acid battery, car starter or leisure battery is academic!
If it's 10 years old it's almost CERTAINLY beyond meaningful use no matter how well cared for! That's pretty much guaranteed end of life for a lead acid battery! Most of us have an optimistic expectation of 6-7 years well cared for use, if we make 8-9 years we're blessed with exceptional good fortune! IF you could get it to accept a charge, it'd have virtually NO capacity, and go flat near instantly on even the lightest load! A proverbial chocolate teapot, all the appearance, but NO practical use!
If it's not been maintained with regular charges every few months throughout it's life, and/or stood severely discharged for any time, it's 100% DEAD and BEYOND recharging!
On technicalities, if it doesn't claim to be a leisure battery on labelling, then it is almost certainly NOT a leisure battery! Leisure batteries are constructed slightly differently to car starter batteries to better cope with the demands of use, they have more lead and weigh quite a bit more than an equivalent sized/rated starter battery, they sell at a premium price, and will proclaim their intended use. Leisure batteries are rated with NCC (National Caravan Council) rating designations of intended use, and labelled accordingly (See here: https://www.halfords.com/motoring/advice/what-is-the-ncc-verified-leisure-battery-........ ). There are dubious quality 'leisure' batteries sold, which are NOT truly leisure batteries, sometimes with labels proclaiming 'leisure', but really only starter batteries, and they will fail very early when put to typical leisure battery uses! They almost certainly will NOT have the NCC certified labelling and rating, as that would be a profoundly false claim with legal consequences for the supplier!
As to charging, a basic leisure battery is charged exactly the same as a basic car starter battery. If it's a higher spec leisure battery like an AGM (absorbent glass mat construction), then slightly more specific charging requirements.
'Mammoth PLUS - heavy duty 065 - maintenance free' sounds like a regular car starter battery. A '065' sized battery is only 45/55Ah rated, which is a VERY small capacity for a leisure battery, they are usually near twice that capacity! As a starter battery, it's even less likely to have survived 10 or more years in a useably/recoverable condition if used as a leisure battery!!!!!!
It 'may' be worth trying to charge your battery to check out systems on the caravan (use basic starter battery setting on charger), if that is your intention (but hooking up to a EHU would enable that to), but be under NO ILLUSION, you do not have a battery to be put to any really functional use, at best it may bring a flicker of life to systems, but will go flat again in no time at all! If you want practical use out of a leisure battery, then I'm afraid you need to buy a new one, and a proper leisure battery of as large a capacity/case size as will fit the battery locker is generally the best investment, it's unlikely to be more than an 80Ah rated one on an older van!
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via mobile 07/9/2024 at 2:27pm
