Recently I noticed that my Stihl 36 volt lithium-ion batteries will not charge if the temperature is below 50 degrees Fahrenheit and if the temperature is over 80 degrees Fahrenheit then I have to let the batteries cool off before they will charge. Obviously I am unimpressed with that kind of useful temperature range. Has anybody else here had a similar experience with Stihl or other batteries? I've used 18volt Makitas for many years and never had this issue. Reading through Stihl, Husqvarna and EGO battery manuals suggests that the higher voltage lithium batteries are more sensitive to temperature but I find it hard to swallow that yet another "advancement" ends up being a more of a step backwards than true progress. Aside from "snowflake" batteries I love using the battery tools since I don't have to constantly wear ear protection and can listen to music while not irritating the neighbors and passerbys on the street.
BigFriendlyGardener
I'm assuming AP series batteries? Which ones and which AL charger?
I know my AL 500 charger has a fan that will cool the battery down if needed prior to starting the charge cycle. I'm my case I'm charging after the work day is done and not on a time critical swap out during work day scenario.
I know my AL 500 charger has a fan that will cool the battery down if needed prior to starting the charge cycle. I'm my case I'm charging after the work day is done and not on a time critical swap out during work day scenario.
Back when I started to use SnapOn battery tools, the big 18 volt. I was told by my SnapOn guy never to charge a battery
right from the tool. They would be hot, and the charger would not charge them untill they cooled down. I tried it a couple of times, the charger would just blink at me, untill the battery temp came down. The point of that was so the battery would not catch fire or explode......
That got me into the habit of always using a battery that was already to go, and putting the one I just used a side....
I have never had an issue with any of my Milwaukee batteries temperature wise...The shop is never colder then 60f in the winter when I'm in it, and never blow 40F when it's empty. And what ever the air temp is in the summer. No problems there.
Years ago, AvE on YT did a vid on batteries, that if you drain it down to far, the battery would not recharge. Of course he hacked the battery....
The thing is, you only need two connections to charge a battery, a pos (+) and a Neg (-). Those other connections are there for the battery and the charger to communicate with each other.....I wonder what they talk about.
right from the tool. They would be hot, and the charger would not charge them untill they cooled down. I tried it a couple of times, the charger would just blink at me, untill the battery temp came down. The point of that was so the battery would not catch fire or explode......
That got me into the habit of always using a battery that was already to go, and putting the one I just used a side....
I have never had an issue with any of my Milwaukee batteries temperature wise...The shop is never colder then 60f in the winter when I'm in it, and never blow 40F when it's empty. And what ever the air temp is in the summer. No problems there.
Years ago, AvE on YT did a vid on batteries, that if you drain it down to far, the battery would not recharge. Of course he hacked the battery....
The thing is, you only need two connections to charge a battery, a pos (+) and a Neg (-). Those other connections are there for the battery and the charger to communicate with each other.....I wonder what they talk about.
Hello All,
I wanted to share a fix I found for the Stihl AL 300 charger.
After 6 yrs of weekly use, my charger stopped charging both batteries I have (an old AP 300 and a new AP 300S). Charger would run for a few seconds, and then I would get a solid red led on the charger. It would do this regardless of battery temp.
I took the charger apart and figured out that one of the fans wasn’t running (wired it directly to a battery).
I was able to find the same model of fan on eBay (RBH5015S5). It came with a different connector. I cut off original connector and used butt crimp connectors to attach connector that plugs in to board.
Closed it back up and she’s charging away!!
Took a little bit of time, but something to do while watching some tournament basketball.
![Image]()
![Image]()
I wanted to share a fix I found for the Stihl AL 300 charger.
After 6 yrs of weekly use, my charger stopped charging both batteries I have (an old AP 300 and a new AP 300S). Charger would run for a few seconds, and then I would get a solid red led on the charger. It would do this regardless of battery temp.
I took the charger apart and figured out that one of the fans wasn’t running (wired it directly to a battery).
I was able to find the same model of fan on eBay (RBH5015S5). It came with a different connector. I cut off original connector and used butt crimp connectors to attach connector that plugs in to board.
Closed it back up and she’s charging away!!
Took a little bit of time, but something to do while watching some tournament basketball.
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