Products
AA Battery Power Tester No.5 No.7 Universal Battery Power Tester Battery Distinguishes Old and New -75623
product detail
Product parameter:
4 lights on-the new battery is fully charged, use it wherever you want
3 lights on-about 50~75% of battery power left, it can still be used in most occasions
2 lights on-about 25~50% of battery power left, it can only be used in small current occasions
(Such as remote control, wireless keyboard and mouse, etc.)
1 light on-the battery is almost empty and can be discarded
0 lights on-it's completely unusable, definitely throw it away
