Good news, CSPOWER new gel battery win big market in Eid festival: HTL series High Temperature Sealed Free Maintenance Deep Cycle GEL Battery with 15-18 years design life in float service. 1. Three years warranty at 35-40 degree average. 2. Able to operate at 60degree. 3. Long life and high stablity under super hot and super cold environment -25degree to 60degree. 4. Use super-C additives lead plates: Deep discharge recovery capability. 5. Cycle usage: 50% DOD, 1500 Cycles.