Seems to be working. Haven't tested it yet. Like really tested it.
I'm ordered two 6000mAh batteries. Arrived in 25 days. Tested on air booster MAKITA DUB362Z. On maximum power worked 9 min. same as original Makita 4000mAh batteries. After first test one of the battery couldn't start charging. The Charger indicated a fault battery as was blinking red and yellow indication. I wait one hour and tried again it start charging. It seems to be a problem with one battery cooling.