The device for battery charge or discharge based on the technology of bidirectional converter can be used in charging or discharging battery, and realize sine wave of ac and unity power factor.

基于双向变流器技术的蓄电池充放电装置具有充电和放电功能，同时实现了网侧电流正弦化及单位功率因数，因而减少了对电网的谐波和无功污染。

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This charger has the trait of high power factor, can be connected to ordinary single-phase AC sockets directly, and offers low-power and low speed charging for storage batteries.

该车载充电机具有较高功率因数，能够与普通的单相交流电源插座直接连接，为电动轿车的蓄电池组提供小功率慢速充电。

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Research shows the SVG can effectively compensate reactive power and govern power factor of the grid the voltage fluctuation when the chargers work in the charging process.

结果表明充电机工作于充电过程时，SVG可以对无功进行有效的补偿，对电网的功率因素、电压波动具有有效的治理作用。

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Capable of delivering 5-to-50 watts of power, the new wireless charging spots use the same form-factor as the thousands already employed in public venues ensuring universal compatibility, while charging devices of various power levels at up to 93% efficiency.

ENGADGET: Duracell Powermat adding mesh network, scaleable power to its wireless charging plates

Mr Crompton was asked today if "ethnic origin was a factor" in the Crown Prosecution Service charging suspects.

BBC: David Crompton