In order to check the battery discharge capacity is normal, generally use the 10 hour rate discharge, conditional dummy load discharge; consider the convenience from the user, also can be directly used load to discharge, namely pull off electric, battery powered, considering the security, depth of discharge control in 30 ~ 50%. Of course, the conditions can be discharge deeper, easy to expose the problem of battery potential. And each hour detecting a single battery voltage, battery capacity by calculating the release, table 3 voltage value, judges whether the battery is normal
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