How to test battery is bad

來源: 於 2015-08-17 10:51:26 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

My battery was bad today and it's wonton three year warranty. Voltage is 6.7v。 Sams club claim they have to test it in their charger because Rotary may damage the battery。 it takes 5 min to one hour. is it true。