How to test battery is bad

来源: 于 2015-08-17 10:51:26 [博客] [旧帖] [给我悄悄话] 本文已被阅读：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。