... 4. Long service life, float appkcation. Rechargeable battery, battery, lithium ion battery1). More than 2000 deep cycle ... ). The weight of an equivalent capaciy lead acid battery. 4). Long service life, float application. 5 ... ). maintenance-free operation. 6). Excellent safety. 7). Low environmental impact. 8). Nominal Voltage: 24V, ... voltage (25oC): 27.6~29.6V(normal 29.6V) rechargeable battery