Ballast input voltage: 9 16V Working voltage: 12.6V Working current: 3.2A Starting max current: 8A Power output: High 35W / Low 28W Output temporary max voltage: 23KV Battery mode: ICR18650X3S2P(6600mAh) Battery charge voltage: 12.6V ± 0.1V Battery lifespan:≥500 times Brightness: >3000 liumen