danski, you mind explaining? I leave mine plugged in / charging in the shop all the time
Not much to explain.
Fires originating from cordless tool battery chargers that were left alone and plugged in.
Why? Got me. Wide range of possibilities like defective component inside, defective battery, junk inside the charger shorting it out...
When the FD showed up at the site with the Milwaukee charger, it was not the first go-around for them. They had prior calls/fires with that charger style.
It is probably reasonable to say that consumer mass market cordless tool battery chargers are engineered to meet a price point. It is doubtful that those inexpensive tool chargers are built like battery chargers used in the enthusiast level and up remote control toy hobby- electrical components or charging profiles.
I have used cordless tools of one type or another since the Makita 9.6V stick.
I see no benefit to leaving batteries in a charger and plugged in all the time. The possible increase of charge/discharge cycles and simply leaving it unattended are both deal breakers for me, especially with lithium batteries.