Cordless tools make our lives much easier, in a number of ways, but we’ve had batteries tap out on us after just a year and others that have lasted long beyond their warranties. Since our inception, PTR has tested batteries from DeWalt, Milwaukee, Makita, Skil, Metabo HPT, and countless other professional tool brands. With that said, no matter who made them, there are three things that can kill a battery faster than anything else: temperature, vibration, and moisture. That might seem like a no brainer, but you’d be surprised by how much longevity your batteries could be losing just by storing them out in that hot garage! In this video, we cover exactly how these environmental factors affect your battery packs and what YOU can do to extend the life of your units.
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I use a blanket on minee 🍻 🔥
What degrades lithium ion batteries the most is keeping them 100% charged for a prolonged period of time. If you keep them between 20% and 60% state of charge most of the time and store them around 40% when not used for prolonged periods, you can double their lifespan. That’s tough to do, but there are exceptions. You can get away with discharging to as low as 5% as long as quickly charge it above 20%. The battery management systems in these batteries add their own buffer of a few percent at the top and bottom of the charge range. So, same goes for charging to 95%. You can do it without significantly impacting battery life as long as you bring the state of charger at least to below 60% soon after.
Around 40% is the least stress state of charge for a lithium ion battery.
Lastly, rapid charging from 5% to 50% has negligible effect on lifespan. However, fast charging from 50% to 95% does decrease lifespan significantly. Make sure your rapid charger is smart and lowers the rate of charge as state of charge increases. If not, you could swap batteries from your rapid charger at 50% to your slow charger.
9/10 users won’t do half of these things because they’re inconvenient and because battery warranties have gotten better. If you buy from a brand with good warranty service, you’re almost better off using and abusing your battery so it fails before your few year warranty is expires so you get a brand new battery. Then, nurse the replacement battery unless it too gets a few years warranty.
“That’s 20 degrees C for our Canadian friends” How kind of you! You saved me the agony of having to convert it because i’m too lazy to learn the Fahrenheit scale, but not too lazy to learn the Cyrillic alphabet for no reason at all, though. 😂
i dont like charging and even storing them in my house because of the fire risk. the shed in the back of my garden unfortunately gets very cold in the winter and very hot in the summer… guess ill just accept having a lower life expectancy, beats the risk of burning my house down. same goes if i ever install a home battery electricity storage system, in the shed it goes.
I have a quick question boss man isn’t it better just to pull off the battery as soon as it is fully charged instead of leaving it on the charger just wondering thanks for your time God bless you and your loved ones