你好，我用MSP430F437，3.6V电池供电的手持设备，软件设置压降到3V时供电报警，新电池老是用不了1~5天就开始报警，用万用表检查电池电压为3.6V，取下电池重装有可以用1~5天，整套电路均使用低功耗器件，请予以指导，谢谢。
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