So I have need of rechargeable batteries (game controllers, universal remotes)
These charges claim to charge anything lithium ion but I'm afraid of just going to Best-buy and throwing a set of Duracell on their only to wake up to the fire alarm going off
Check out Amazon for NiMh batteries and chargers. You can save a lot, especially if you have Amazon Prime. Best Buy, OTOH, is price matching other vendors, so you might get a deal on sale. I buy my AA and AAA NiMh batteries in larger packs from Amazon. One thing you need to consider is that an alkaline AA/AAA is a 1.5v battery and NiMh is a 1.3v battery, so the alkaline lasts a little longer in any given device. The plus side is cost. It's worth it to me to charger and change batteries more often rather than having to go buy new ones. I keep about two dozen NiMh charged and ready to swap.