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BQ24133充电时,电池电压过低无法

Other Parts Discussed in Thread: BQ24133

使用BQ24133充电,电池电压如果在3.5V以上的话就正常充电,电流正常,但是如果电池电压使用到了3.5以下的话,芯片就不往电池里面充电。两节18650锂电池并联。附件是电路图,谢谢。