The testing unit is very easy to use. Battery's fit with no problems. The meter bar while not exact by any means tells you instantly how much power your battery has left. For me personally I use wireless microphones that constantly need replacement battery's in them. You can cut down on all those batteries clogging up your utility drawer. Yeah that drawer. the catch all, junk drawer. For the price and how well it works plus ease of use I highly recommend the tester for your home , out in the shop or your business.
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