Product description
Specifications:
Model: BT806
Material: Plastic
Color: Black
Size: 55x53x23mm/2.17x2.09x0.91Inch
Net Weight: 34g
Package Included: 1PC

Features:
Quick Test the condition of your battery in seconds. Has a movable arm to accommodate the battery.
Test different sizes of batteries in only one unit. This gadget really works when you don know which batteries to keep.
And which to throw away. Place a battery between the two points of the battery tester.
And it will make the right decision for you in seconds. Universal Battery Volt Tester AA AAA C D 9V Button Cell.
The color of the indication of the header is as follows:
Red (RE-PLACE): If the indicator pin points to this block, the battery under test needs to be replaced or recharged, that is, the battery is basically unusable.
LOW: The battery is very low, but some appliances can be used.
Green (GOOD): The battery is fully charged.