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china Solar Battery Rechargeable e bike lithium battery pack 36v 6ah 9ah 12ah 14ah 18ah for electric bike scooter Longer life compared to Lead-Acid battery -Over-Charging safety protection 60% more energy -Over-Discharging safety protection Up to 70% weight savings -Over-Current safety protection Portable handdle, easy to install and remove -Short Circuit safety protection Faster charging times -High Temperature safety protection 100% available capacity In-built safety protection BMS NO FIRE, NO EXPLOSIONS Eco-friendly, no pollution. http://www.optimumnano-china.com/solar-battery/