Little Red Wagon Repairman
MFOMBSoPGA
Do you have a Nintendo Gameboy Advance SP? The original batteries are old and most of the aftermarket batteries are stinkers. I kept looking until I stumbled across some nerd on YouTube who does battery videos. He mentioned a place called Batteries Plus Bulbs. One ended up being close to me in Culver City so I went there. Nice Indian or Pakistani family owned-type place. They had a good 900MAH battery. It was a bit expensive but totally worth it. I am going back to the store and getting a battery for my Sony PSP now. They do special orders too.
https://www.batteriesplus.com
https://www.batteriesplus.com