Sealed/Maintenance-Free The valve regulated spill proof construction allows trouble-free safe operation in any position. There is no need to add electrolyte, as gases generated during the charge phase are recombined in a unique "oxygen cycle". Long Shelf Life A low self-discharge rate, up to approximately 3% per month, may allow storage of fully charged batteries for up to a year, depending on storage temperatures, before charging becomes critical. Deep Discharge Recovery Special separators, advanced plate composition and a carefully balanced electrolyte system ensure that the battery has the ability to recover from excessively deep discharge.  Low Pressure Valve Regulators All batteries feature a series of low pressure one-way relief valves. These valves safely release any excessive accumulation of gas inside the battery and then reseal. High Discharge Rate Low internal resistance allows discharge currents of up to ten times the rated capacity of the battery. Relatively small batteries may thus be specified in applications requiring high peak currents. Wide Operating Temperature Range FGET batteries may be discharged over a temperature range of -40°C to +60°C (-40°F to + 140°F) and charged at temperatures ranging from -20°C to +50°C (-4°F to +122°F). Rugged Construction The high impact resistant battery case is made of nonconductive ABS plastic. The case materials impart great resistance to shock, vibration, chemicals and heat. Flame Retardant (FR) battery cases and lids are available where the end application dictates. Long Service Life Have a design life of up to five years in standby applications. In cyclical applications up to 1,000 charge/discharge cycles can be expected depending on average depth of discharge.  Use and maintenance 1) Please use constant-voltage charge. 2) In floating charge, the voltage is 2.23 to 2.27 per unit cell. 3) In cycle use, the voltage is 2.35 to 2.45 per unit cell, the max. Current is no more than 25%° C 4) Please do tighten the bolts to avoid sparkle and poor contact when the battery is in use. 5) Please do not use it near the heat source and open flame. 6) Please keep it at low temperature. Please change it while there is liquid leaking or damage.  FGET Advantage   1. We are factory with more than 8 years history in battery field. 2. As a CE, ISO9001, ISO14001 company, we believe that our battery quality can definitely satisfy you. 3.We focus on quality, never use fake gel and recycle lead.    FGET batteries are classified into two categories: Valve-Regulated Lead Acid Battery and GEL Battery. The VRLA battery includes UPS inverter AGM battery, Solar Deep Cycle battery, Car battery, Motorcycle battery, Telecom Front terminal battery; The GEL Battery is Solar Gel electrolyte battery