SUPRME POWER Nimh Portable Power Packs  in modles for 12 Volt , 24 V olt and 36 Volt applications.

Use for electric back up power for  emergency conditions, emergency lights, medical equipment, robotics, camping, electric bicycles, small electric appliances, personal care scooters, wheel chairs, industrial products, and much more.
14 models to choose from. 12 V 110 Watt hr, 12V 156 Watt hr, 12 V  110  Watt hr,  24V  220 Watt hr, 24V 320 Watt hr,  36V 330 Watt hr, 36V 480 Watt hr, 24V 220 Watt hr 24V 320 Watt hr, 36 V 330 Watt hr, 36V 480 Watt hr,  48V 2200 Watt hr and 48V 3200 Watt hr Industrial model.
Convenient, lighter weight than SLA batteries. NiMh 9000mAh D batteries "Stack' in housing for easy removal of batteries to test for defective  cells. Remove cells from housing, test cells with amp meter for voltage, replace defective cells, recharge batteries, re-insert batteries in housing  and ready to use again.