I have Craftsman, Milwaukee, Skill, Makita, Dewalt, Denalie, and several off brand cordless drills. My oldest ones are the Craftsman 18 volt industrial model (Ni-cad) that I purchased with a circular saw in 1995. ( also have some 7.2 and 9.6 volt Craftsman and Makita's that are even older) It came with 2 batteries. One of them is still around 100% the other one is down to about 80% of its origional capacity. My newer Milwaukee, Makita and Dewalt all have the Lithium Ion batteries. I don't think you could kill any them if you tried. I have used the 1/2" craftsman for a long , long time. It is big and heavy and just keeps going. I haven't found a cordless drill that can out perform it except for my 36 volt Dewalt. I use it with 4 inch hole saws to drill holes in ceilings for electrical boxes and long ship augers for electrical wiring. It can't be stalled it will break you wrist first.
My 18 volt lithium Ion Milwaukee performs very similar, except the battery has a lot more capacity so it will do more work between charges.

What has worked for me all these years is I don't store the batteries with a charge in them and I keep them in a temperate invironment...well above freezing. I always run the ni-cads a little low before I put them away. Not all the way dead but discharged somewhat. For the money I don't know how you could beat the craftsman drills. You can get one for under $100 with 2 batteries and they are upgradable to the Lithium Ion batteries. I have read that both craftsman and Ryobi are made by the same people and that they use a premium cell in the battery pack. I don't know about that but the C3 Craftsman series has the advantage a lot of other tools that can be powered by the same battery. One of my favorites is the caulking gun, it makes laying a professional bead very easy and your hand never gets tired.
The keyless chuck on the Milwaukee is my favorite. It clamps down with incredible force. My Milwaukee tools that I have are the V18 series that will use both the lithium and the Ni-cad batteries. I have the 1/2" hammer drill, sawsall, hatchet sawsall, metal cutting circular saw, 6 1/2" circular saw flashlight, 3/8" impact driver, 1/2" impact driver and the SDS hammer drill. They are all great tools.

I have the lithium ion Makita drill, Reciprocating saw, 3/8 inch impact driver and flashlight. I have the Dewalt 18 volt Drill, reciprocating saw, 4-1/2" angle grinder/cut off tool, 3/8" impact driver and spiral cut saw. I have the Dewalt 36 volt reciprocating saw, 7-1/2" circular saw, 1/2" hammer drill and flashlight. These tools have the power of corded tools but weigh a little more than you might expect.
I think I have every Craftsman 19.2 volt tool made. They are hard to beat for the price and variety. I have not had a battery go bad on me yet, but the Lithiums are scarry. They will work at full power, then the next time you pick it up it won't even try to start. The first time I did this I thought I had broken the tool.
I use my Milwaukee tools more than any of the others probably because of all the sawsall work I have been doing lately. If you look them up on Amazon you can find detailed Milwaukee V18 reviews. Many of them written by me.
I use my 1/2" drive Milwaukee cordless impact to rotate the tires on my one ton dualley and to change the blades on my 60" zero turn. It makes the task painless. A complete tire rotation takes almost nothing out of a fully charged battery.