... separatorholes in the cover are for electrolyte and replenish pure water be filledwith handleCertification:ISO9001,ISO14001,ISO/TS16949,CE ... useful life.Because the electric current can activate the chemical substances which in battery plate. And 30 minutes is ... , ISO certificate, SONCAP certificate, BV inspection certificate. 8. With competitive prices, excellent quality and on-time delivery, our car ...