... 5 years for NP,15 years for GMSafety explode defenseSmall resistance,big current dischargeNo dissociate electrolyzed,put on 90 degree.Low ... Returning from deep discharge Maintenance-free,no need for adding solution.Wide range of applicable temperature(-35- ... when being inclined by 90 degree.Small internal resistance,good discharging property for high cureent. Unique formula for small self-discharging, ...