... when compare with other battery. 1/3 weight of SLA, 65% weight of NIMH.5. Great capacity and more powerful, ... can equip battery charger.Can be recharged anytime, no reduction of the capacity7. Widely application, customize solutions, mass production, OEM ... produce lifepo4 battery cells but also solar contoller,any questions,pls contact with us. Solar system lithium battery pack 12v 40ah with ...