The one supplied when you buy the tool is fan less. You ponie up and buy the bigger charger and it comes with a fan and a temp gauge.Does the Hilti charger not have built in cooling fans? My Makita will not let the batteries charge when hot but the fan in the charger cools them pretty quick.
What age are we talking about here, I may have reason for concern. I don't want to be caught handling my little girls or even worse burying them in an ice chest.:laughing:I take care of my tools but even I do abuse them, batteries on the other hand are little girls though. You play to rough and they wont work again.
Opposite problem in the winter.We keep the new Dewalt batteries in the shade, and let them air cool for awhile before charging.....now the XRP batteries, that was another tale. They would not ever take a charge when the battery was hot, and in the heat of summer, we indeed placed them in the top of the ice chest for half an hour to cool them so they would charge. The charger had a light that indicated "hot cell".
The Li batteries are a great improvement over the NiCads.
I've got a dead one now. Gonna give it a try.I had some DeWalt NiCad's that were failing. Places them in the freezer over night, and them thaw for a day. Worked line new again! Well, I got another year or so out of them. After that they were toast, and the freezer trick didn't work. This does not work with Li-Ion.