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 Topic: Leisure battery Recommendation
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09/5/2023 at 1:50pm
Location: Wessex
Outfit: Dethleffs Trend T675
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Go for the one with the highest Ah rating that you can afford, the Ah (Ampre hours), is supposedly the number of amps of current it will provide for a given time.
In theory, a 110 Ah battery will provide 1A of power for 110 hrs, 2A for 55 hrs etc (its DC electrics so it's just simple arithmetic). But, batteries lose their efficiency, I work in the aircraft industry and we work on the 80/80 rule, that is a battery will only be able to provide 80% of the full charge for 80% of their rating so your 110Ah battery when new will only provide:
110Ah x 80% = 88Ah x 80% = 70.4Ah (or 1A for 70.4 hrs), when older which is a long way off of the original 110Ah.
Also, unless you have a modern regulator fitted, I wouldn't bother with an Advanced Glass Matting (AGM) battery, an older regulator probably wouldn't be able to charge this type of battery efficiently.
SO regardless of which brand you go for, make sure you get the one with the highest Ah rating for your money.
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via mobile 08/5/2023 at 5:44am
