My comment here may be unpopular - I used rechargables for a while but, since I didn't keep them on a charger all the time, they were frequently mostly discharged when I needed them. Then I'd need to charge 'em up. So now I buy a bulk box of AA or AAA quality alkaline cells. They will last much longer in storage than will the rechargables. So now everything works and if it doesn't, I just put in fresh alkalines.
Now I use batteries in low current situations - like LED flashlights and walkie talkies. If I had anything that had high current draw, like a helicopter, then for sure I'd use rechargables.