Unfortunately it sounds like your batteries are dying. Even Lithium ION Batteries go bad. The sad part is the batteries will likely cost more than buying a new drill with new batteries.
Yeah, batteries dying is one of the reasons I do not use battery powered tools. Except flashlights, and it's bad enough buying batteries for them. Battery powered tools have their place in the world, no doubt about it. But me, I work in, or close to, my shop. As long as a plug in is handy, no battery tools for me. I can't see any sensible reason why it would cost less to buy a new tool, with battery, then it would cost to buy just the battery. So for me it is either corded tools, or cordless that are hand operated. I'm happy with that.
