Maintenance Free Since the gasses generated when charging are completely absorbed by negative plates and recombined into water within the cell, so it is maintenance free. Sealed Construction Due to its unique construction, the PE battery can be used in upright or not over 90 X, then there`s no concern of the loss of capacity or leakage of electrolyte. High Energy Density Maximum energy per unit volume is achieved by using highly absorbent glassfiber separator to retain electrolyte. Deep Discharge and Superior Recovery Combine a proprietary separator system and electrolyte to provide the battery`s best charge acceptance, not to affect charging function after deep discharge or long storage. Extremely Low Self Discharge Use highly efficient safety valve construction and pure plate, alloy grid, so PE battery is able to achieve a low 3% loss of capacity per month when stored or not in use. Long Service Life Use heavy duty positive and negative plates, provide extended service life in both cyclic and standby applications. Broad Range of Operating Temperatures PE battery design is suitable to be used over a broad operating temperature range. U.L. Recognized Component Under UL 924 Section 38, PE battery has been tested and approved for use under this standard. Economical The unique design of PE battery prolongs usage life frame, it is trouble-free and highly safe. Applications Standby (Trickle charge) Applications Cyclic applications Emergency equipment: Emergency lighting, burglar alarms and disaster preventing system, security systems, fire shutters, elevators Main power supply back-up: UPS systems, communications systems, ECR, POS, computer terminals, computer, sequencer CATV, fiber-optic communications