My second set of batteries are showing signs that the end is near. I purchased this replacement set over 5 years ago, the first set died after 4 years of hard use in construction. Most of the use is on the 18v Hammer-drill. I've run this drill hard and now expect 4-6 years from a set of batteries. So, the choice is another set of 2 batteries at $75 each or move on up to a new Milwaukee, hmmm ... I will try the 9 volt battery trick to try and save these batteries.
Update: I decided to try an salvage the batteries and started by running the batteries dead on the flashlight, it was part of the combo package, overnight. Used a 9 volt battery as has been recommended for 30 seconds then charged the battery the next morning and was surprised when the drill was once again going at full speed. As the batteries were dying, the drill no longer operates at full speed and then it won't even turn on, but the flashlight continued to work for 3-4 hours.
So, I don't have to buy new batteries. I'll update if they crash. From my experience, it seems that battery life is extended if they are used often.Get more detail about Milwaukee 48-11-2230 18-Volt 2.4 Amp Hour NiCad Slide Style Battery.
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