Here’s another handy tip. I use Ryobi cordless tools a lot. When one of the batteries would die I’d go buy another one. Well, not anymore. There are videos out there showing how to bring them back to life and it’s very easy to do.
Yes, I was aware of that. And they are a fortune to replace otherwise. From what I understand is that if the battery drains beyond a certain limit, the charger won’t recognize it being prompted for charge. I found it useful to use leads from another battery to transfer voltage in order for the charger to engage the battery for recharge.