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单晶片独立控制，充电4.2V 7串29.4V电池组输入电压能做升降压充电更好，输入范围21V~28V
你可以查查BQ24620或24630，看是否满足你的要求。
BQ24620是充铁锂的，不知道我充7串3元的锂离子电池能否充满到29.4V
