I inherited a Husqvaarna battery operated tool system, chainsaw, leaf blower, and string trimmer. 3 tools, 3 batteries. The history of these batteries is suspect. Kept in an unheated garage with temps into the high 30's.
All batteries will charge to "full" with no error code on the charger. But, and there is always a but, when used, all batteries will fail (tool stops working) after 4-5 minutes uses of use. When I slap another battery in the same result. But, 😩, after sitting a few minutes, 5-10 minutes, the battery will run at full speed, for 4-5 minutes and fail again.
I'm assuming the batteries are toast. Yes/No? If they are toast, any resource to have them rebuilt?
Bill
maybe check with these guys..... https://www.mtobattery.com/
The BMS timed out.
We've been using those saws at work for a few years and the batteries have held up well. Some chargers have crapped out. Something is wrong with your batteries or maybe the chargers have gone wonky
Battery Management System
https://en.wikipedia.org/wiki/Battery_management_system
Believe batteries for power tools can only be charged so many cycles. One of your batteries has 2019. If that's the year, it's probably done. I know my DeWalt batteries last about 3-5 years, and then do the same thing you're describing. I've had pretty good success with some of the aftermarket batteries purchased on eBay.
The BMS keeps track of the charging cycles and I think they are programed to fail after a set number.
I got tired of Milwaukee M12 batteries fizzling out at $100 plus so I went to Amazon 2 fer $36. The cheapies work for a few years and quit. But being ripped off is not in my nature so I recommend them.
I won't buy the Chinese lag bolts with the heads that twist off under torque.
You have to pick and choose in this world we've created. (sort of tongue-in-cheek).
I would suspect the charger, having 3 batteries fizzle out at the same time is too much of a coincidence
Quote from: Rancanfish on May 12, 2026, 02:15:18 PMI got tired of Milwaukee M12 batteries fizzling out at $100 plus so I went to Amazon 2 fer $36. The cheapies work for a few years and quit. But being ripped off is not in my nature so I recommend them.
I won't buy the Chinese lag bolts with the heads that twist off under torque.
You have to pick and choose in this world we've created. (sort of tongue-in-cheek).
My oxilic acid vaporizer uses high $ Milwaukee batteries and I thought the far less $ "brand X" batteries would work. The same aledged amp hour brand X battery ran for 10% of the time the big buck Milwaukee ones and one 1 "died" after a few charging. I tore it apart to salvage/recycle and I was not impressed with the substandard construction.
However Milwaukee batteries are WAY OVER PRICED!
The 2 batteries that came with my 2013 DeWalt drill are both still going very strong despite some ridiculous abuse. There's clearly some variation among individual units.
DeWalt batteries are good
I have a 20 year old metabo impact drill with original batteries, and still holding a good charge. I use it a lot. Only had to replace the charger a few years ago.18v lithium
We are still using some Makita 18V batteries that are seventeen years old. But the others of that first group of four will no longer take a charge. It seems like the whole family are constantly on the look-out for another battery so I'm sure that none of them ever sat unused on a shelf for any length of time. Battery-operated tools are both a godsend and a curse.
I had an original blue Ryobi circular saw that worked for over 18 years around the house.
I only put it on the shelf because the bearings started making too much noise. I keep saying I'm going to tear it apart and get some Boca's for it, lol.
I bought another original blue one at a garage sale and it lives in the garage too. I think my battery tools are all blessing. They just get tired, like me.