A 7- or 8-amp charger will never bring a battery that's been drained significantly back up at a proper rate. This can lead to sulfation on the plates, shortening the lifespan and/or storage capacity. If the battery is never drained down by more than 10%, perhaps the small charger can keep it topped up. I'm running 40A on a 200ah battery bank that so far has never been below 70% capacity. On 8/1/2013 8:57 PM, Steve Williams wrote: > At 05:41 PM 8/1/2013, Karl Mullendore wrote: >> That (7.2-amp) charger is far too small fr anything much larger than a >> lawnmower >> battery. I'd recommend a 20-30A Iota charger. > > Karl, tell me more! My little 8-amp Prosport charger seems to do fine, > even with the Engle fridge running. > > http://www.amazon.com/exec/obidos/ASIN/B001BSUR2Q/sbw/ > > (Not to mention I see that same charger in a lot of boats, all with > large house batteries.) > > My house battery is an Interstate SRM-29, about 100 amp-hours. > |
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