I'm actually evaluating a couple right now and will report findings. Been using one of these super cheap items in the range bag with reasonable results.
https://www.amazon.com/Battery-Teste...s%2C161&sr=8-1
But for serious work, I use my (ancient) Fluke 87 multimeter. Had mine for over 30 years now. I sure hope I never have to replace it, considering what they go for now...
https://www.fluke.com/en-us/product/...ters/fluke-87v