Maplin deep cycle solar batteries

[Nix]

Personally I keep to a maximum discharge of around 25 - 30% to give the batteries a much longer life although I've read that the maximum efficiency for a working battery is 50% DOD. One day I'll experiment with the 50% figure. Even though my battery discharges are more shallow, it's good every now and then to go lower. Apparently extremely shallow discharges aren't good for the batteries and they must have the odd deeper discharge.