Product description

Specification:
Model: BT806
material: plastic
Colour: Black
Size: 55x53x23mm / 2.17x2.09x0.91 inches
Net weight: 34g
Package contains: 1PC

Feature:
Quickly test the battery condition in a few seconds. There is a movable arm to hold the battery.
Test batteries of different sizes in only one unit. This gadget really works when you do not know which batteries to keep.
And throw it away. Place the battery between two points on the battery r.
It will make the right decision for you in a few seconds. Universal battery voltage r AA AAA C D 9V button battery.
The colors indicated by the header are as follows:
Red (replacement): If the indicator pin points to the block, the battery under test needs to be replaced or recharged, that is, the battery is basically unusable.
Low: The battery level is very low, but certain appliances can be used.
Green (good): The battery is fully charged.