Battery tester B2 Black

This tester works great. I bought it to replace a different tester that I was using. This tester is so easy to use. And I like how it can test so many different size batteries.

Straightforward to use. Tests a wide variety of battery types. Good value for the price.

Nice little battery tester. Was able to check out all my partially used batteries and get rid of the bad ones and keep the good. Should save me some money by keeping good batteries in service.

Simple and versatile battery tester. With prices going up for AA and AAA batteries, stop throwing away batteries that still have some life in them. This test mot all typical battery sizes, from AA to D, 9V, and many coin-style batteries. Easy-to-read bar graph at the top tells you how strong each one is. Deducted 1 star because the battery tester actually needs a battery to work properly. Seems this could be done without being powered (like the previous generation of testers).

For one who uses remote temperature sensors/thermometers, tv remites, car remotes, air tags and other assorted items containing various batteries, this little money saver is easily stored and a long time over-due in my house! No more guessing games or needless replacement of batteries! They make great gifts that are actually useful!

Day 1: I'm impressed. My first impressions: This tester is a little smaller than I was expecting, but not inconveniently so. It is amazing how many sizes and types of batteries that this works on. Button batteries and even n size! I've had the type of tester that's common now, where you have to hold the tester in one hand, then place and hold the battery in it, with the other hand and somehow be able to slide the gage down to make solid contact with the upper terminal - no spring-hold on those ones. This unit has precisely fitted slots for each battery type. Very nice. It seems well made and is light. It had a high percentage of 5 star ratings and a sufficiently low percentage of 1 stars for me to give it a shot. The 1 star complaints were mostly about a random battery slot failing to work after the return period. I can't comment on that on day 1. The unit requires a single battery (provided) to power the screen, which only comes on when reading another battery's charge, so battery drain (another complaint, though infrequent) shouldn't be an issue. The manual is almost useless, though. It simply points out what each part of the unit does e.g. D batteries here, AAA batteries there, etc. So far, Top Marks for this product!

This Battery Tester is a must-have for quickly checking the charge on a wide range of batteries. The LCD display makes it easy to read, and it works with AA, AAA, 9V, button cells, and more. I love that it’s universal, so I can test multiple battery types around the house. It’s small, lightweight, and easy to use. The included AAA battery is a nice bonus. Overall, it’s a great tool to help prevent wasting batteries and ensures I’m only using fully charged ones.

Pretty cool! Especially at this low price. I had a bunch of AAA batteries, some dead, some not, that motivated my purchase. It made them easy to sort into Keep/Discard. Same for some AA. Haven't tested all other sizes yet, but based on AAA and AA I can say that the device's "fit" to the battery is not "perfectly snug", may require a little jiggling to be sure if one is dead, but it does work.

Really easy to use and see the results

電池残量が簡単に計測出来る バーとweakなどの文字表示だが境界の電圧が数値で示されればより分かりやすい

Good quality and easy to use.

Extremely useful item

ボタン電池が測れる