To the electrical power system reliability request high situation, USES two group of accumulator cell parallel operations, the floating power supply way generally.

在对电源系统可靠性要求较高的场合，一般采用两组蓄电池并联运行、浮充供电的方式。

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Note that as long as the external power supply is active, the GND pin may not be floating.

注意，只要外部电源提供是活跃的，GND别针可能不漂浮。

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Note that as long as the external power supply is active, the GND pin may not be floating.

注意，只要外部电源提供是活跃的，GND别针可能不漂浮。

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