My drill battery won't charge - any ideas?

Hey everyone, got a weird issue. My drill battery just stopped charging. It's a 20V lithium-ion, not that old. When I put it on the charger, the light blinks red and green, and after a bit it just shows solid red. Tried a different charger, same thing. Any thoughts? Is it toast?

Hey Gary, sounds like the battery might have a dead cell or something. Lithium batteries can be finicky. Have you noticed if it gets hot when you try to charge? Sometimes they have a thermal cutoff that trips. Also, check the contacts on the battery and charger - might be dirty or corroded. Clean em with a bit of rubbing alcohol. If that doesn't work, it might be toast. I've had a few go bad like that, especially if they were left in a hot garage.

You might want to try a hard reset. Some batteries have a little button or you can jump start them with another battery if you're handy. But honestly, if it's under warranty, I'd just exchange it. I've had good luck with my brand - never had a battery fail, but I always take care of them. Make sure you don't over-discharge them. That's the #1 killer.

Thanks for the tips! I cleaned the contacts and tried the reset button (there was a tiny one), but no luck. It didn't get hot. I guess it's dead. I'll check if it's still under warranty - I think I got it 2 years ago. Should I just buy a new one or is there a way to fix it myself? I've seen some YouTube videos about replacing cells, but I'm not that brave with lithium batteries.

Don't mess with the cells unless you know what you're doing. They can be dangerous. If it's out of warranty, sometimes you can find a rebuilt battery online, or just bite the bullet and get a new one. Consider the cost of the tool - if it's a cheap drill, might be better to get a new tool with battery. But if it's a good drill, just get a replacement battery. Also, check if there's a recall or something, but unlikely. Good luck!