New T480, second battery not charging. Is it possible to somehow force the charging process? Battery has just 4.6 volts, and only 1 charge cycle. I dont believe it degraded so quickly
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:max_bytes(150000):strip_icc()/auxiliarybatterywiringexample-5ae253713128340037cef3b0.jpg "Is It Safe to Add an Auxiliary Battery?")
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