點用電壓計量乾電池餘下的電量

remain charge...use voltmeter..Answer NO..

New product..
..by timer, voltmeter and ammeter together.. to be OK..
with cell characteristic curve..

measure the cell's "Ah" woo!..

可以用電壓計並聯一個電阻來量乾電池內所餘下的電量