Please charge battery 8 hours before initial use and at least 4 hours charge time thereafter.

首次利历时，请续连气儿充电8小时，以后每一次的充电时间在4小时以上。

youdao

Charging device which property decides the technical level of a charge in a high degree, is a key equipment to charge battery.

充电装置是对蓄电池进行充电的关键设备，其性能在很大程度上决定了充电机的技术水平。

youdao

The "flywheel" battery, it is said, could power an electric car for 600 miles on a single charge.

据说，“飞轮”电池每充电一次可驱动一辆电动汽车行驶600英里。

《柯林斯英汉双解大词典》

Ford calls C-MAX Energi a "hybrid-plus" because it not only operates just like C-MAX Hybrid, but also features an external charge port and larger lithium-ion battery pack so owners can plug in the vehicles to fully charge the battery using either a standard 120-volt outlet or the available 240-volt charge station.

ENGADGET: Ford C-Max Energi pricing: $29,995 after a federal tax credit, available this fall

If the EPA uses the same calculation for fuel cells as for battery vehicles, whereby the energy used to charge the battery is counted and deducted from the mileage label, fuel cell vehicles would be rated at about 80 mpg.

FORBES: Disappointed With Electric Cars, Automakers Are Making Bad Bet On Fuel Cells

Once the battery is depleted, the vehicle gets 50 miles to the gallon as the generator kicks in to charge the battery while driving.

FORBES: Who Revived The Electric Car?