Characteristics: 1.SN series common motorcycle battery; long service life; instant activation without any initial charge, made possible through unique plate drying and vacuum sealing methods; more than 12 months storage capacity retention is superb because of perfect dry charge characteristics; 2.SN series valve control wet charge&dry charge maintenance-free motorcycle battery maintenance-free operation. Leak proof construction usable and rechargeable along any direction. Low self-discharge, superior large current discharge performance. Wide operating temperature range,excellent start-up performance in low temperature,can be used from -300 degree to 500 degree when it is fully charged. Because there are richest electrolyte structures, inique accumulator plate grids design and fine firm tightening assembly , so IST battery has eximious aseismatic performance.