LED battery test paper

LED battery test paper

We don't want to discard the waste batteries. Because of the coups circulating in the market: Combine two old waste batteries (such as an electronic wall clock) and you will be able to support them for another few weeks! This is actually not a very good suggestion, but the point is that there are many people doing this! But remember to bring a power test strip. This bauble has a small OLED screen and a light, smart display that tells you how much power is left in the battery. In this way, you don't have to worry about combining two used batteries.
Designer:Wang Gang

Stone Saw Blades

Diamond Segment,Diamond Saw Blade Co., Ltd. , http://www.cndiamondsawblade.com