Offgrid living

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Backup Generator Charger (slrpnk.net)

submitted 1 week ago by oeuf@slrpnk.net to c/offgrid@slrpnk.net

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Can anyone recommend a charger (or type of charger) to use for recharging a 24v lead acid leisure battery bank from a backup generator? Currently we have a cheap charger bought online but it only puts out about 130 watts, which means running it for quite a long time to significantly recharge the batteries and is much less than gets fed to them when the sun shines. TIA

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[–] Nomad 1 points 1 week ago

Ideally you buy a BMS which is able to balance the charge in all cells of the bank. In terms of charging, the kind of charge applied depends heavily on the battery technology. Lead acid being the cheapest and easiest to charge. The BMS should be suited to that. Some are configurable to the kind of battery and capacity and number of cells. A car charger usually keeps one cell topped up. You need to keep them balanced so they are used equally and have similar voltage values.