... high density good quality&service negotiable price long cycle life 48V 65Ah Lithium Battery Backup for Signal TowerSpecification:Combination way: ICR18650-13S26PRated voltage ... displays battery charge& discharge status, e.g. battery current capacity, current voltage, charge current, discharge current, discharge surplus time, RSOC and ASOC. 48V 65Ah Lithium Battery Backup ...