True Gel technology, 2v batteries for cycling and stand-by applications, any deep cycle application where superior performance and longer life are required.
2v cells designed to get maximum capacity within limited spaces, can be laid on their sides, stackable. Also easier to replace single cells over time rather than a whole battery bank.
You MUST have a GEL charger and GEL rating charging systems for these batteries. (Try AGM equivalents if you do not).