M18 Batteries can stay on compatible chargers overnight. Learn how Milwaukee's smart charging system protects battery life and safety.
Milwaukee keeps pros and DIY enthusiasts alike coming back for reliable performance, run time, and lasting durability with their cordless tools. Suppose that you bought a Milwaukee 6ah battery recently or are thinking of upgrading the old one to M18HB6; then one question you may ask yourself is: is it safe to leave a 6ah battery on the charger overnight? There are a significant number of individuals who still recall the old-style rechargeable batteries that would be overcharged, overheated, or lose capacity if they remained connected to the charger for an extended period. Luckily, battery technology has come a long way over the years. Extensive testing has proven that REDLITHIUM batteries have intelligent electronics to protect the battery and charger during the charging process. However, having an understanding of how exactly this technology works can help you improve your charging habits and be able to squeeze the most life possible for your investment.
Putting to Rest Those Concerns About Overnight Charging
The worry about leaving batteries on charge overnight stems from the older battery technologies (particularly nickel-cadmium). That battery chemistry was much more sensitive to charging practices and fraught with the risk of overheating or diminished capacity if continually left plugged in after topping off. Since these batteries helped power many tradespeople and homeowners for years, it was only natural that the same fears extended to modern cordless tools. The Milwaukee 6 amp battery thankfully uses lithium-ion technology, but it operates quite differently. Rather than just accepting power over and over again, the battery and charger communicate constantly to monitor the process of charging.
How Milwaukee Charging System Works
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