Review on Multi-Purpose LCD Display Universal Battery Tester For AA AAA C D 9V CR2032 CR123A CR2 CRV3 2CR5 CRP2 1.5V/3V Button Cell Batteries by Mensur Long

This is simple to use, can test most (all?) household type batteries, small form factor, and pretty inexpensive.I used it on the batteries we had used for Christmas; where before I would have thrown them out, I found that all had more than enough juice left. Further, I replaced our smoke detector 9Volts on New Years. In the past, I've simply thrown them away. But the ones I replaced had 90+ charge left. Good savings so far.Further evaluation necessary to confirm the actual charge remaining is accurately reflected by the tool but I'm pretty certain it will come out well.