So far so good
This battery attaches properly, and functions properly with all of my Makita drills. I bought two replacement batteries, and they are brand new, so can’t speak of their longevity, at this point. The previous Makita batteries lasted about three years. There are lots of YouTube videos of how to revive a dead battery, which did not work on any of my previous dead batteries. I believe the main problem is that the computer chips built-in to the batteries, and the Makita chargers, are designed to only allow a certain number of charges and/or longevity of the battery, and then they shut down. Also, even if you do find a way to revive a dead lithium ion battery, you have to seriously worry about fire.
Verified purchase: YesCondition: New