This battery tester with key chain has great advantage on its portability; it is suitable for mobile purposes because it can be easily fit into any pockets. This product is an ideal tool for people who constantly travel around, such as technicians, tourists andnphotographers.
The unique feature of this battery tester include the sliding arm that can be adjusted to measure the power of all kinds of batteries.
Specifications︰
This cool little device tells you how much power your battery has left over.
