The Yuasa Battery TEV12210 ( 21Ah 12v) from Critical Power Supplies.TEV SERIES – High Capacity Cyclic VRLA BatteriesThe low maintenance and valve regulated constructions combine with heavy-duty plates and unique separator systems to make TEV service twice as long as conventional counterparts.1. Double cycle life – TEV operates 500 charge/discharge cycles or twice as many cycles as conventional cycle use batteries at 75% D.O.D. (depth of discharge).2. Valve-regulated and maintenance-free – Battery electrolyte retained solidly in the separator and the innovative gas recombinant system allows minimum gas emittance freeing the user from maintenance.3. Durability for deep discharge use – Yuasa’s state-of-the-art plate barrier prevention and the unique separator systems help ensure deep discharge use thus considerably prolonging battery’s service life.4. Minimal self-discharge – Cyclic use batteries tend to be left discharged after usage causing plate corrosion leading to shortened life. Self discharge rate of TEV is as small as only 0.1% a day at 20°C and thus extends the storage period allowed.5. Higher capacity with same footprint as standard cyclic batteries.ApplicationsWheelchairsGolf trolleyLawn mowersLightsToy carsSprayersPhotovoltaicsRobotsCommunicationsElectric toolsPumpsMeasuring instrumentsMagnetic liftsAGV (Automatic guided vehicle)h2.Features and Benefits|. Description |. Information || Nominal Voltage | 12 || Energy Density (Wh/L)* | 109.7 || Specific Energy (Wh/kg)* | 35.0 || Int Resistance (m.ohms) | 7.2 || Maximum discharge (A) | 126 || Short Circuit current (A) | 315 || Length +/-1 | 21.0 || Length +/-1 | 17.9 || Length +/-1 | 14.7 || Length +/-1 | 12.6 || Length | 181 || Width | 76 || Height overall | 167 || Weight (Kg) | 7.2 || Terminal | B2 || Terminal Torque (Nm) | 7 |