I would like an official Nintendo GBA rechargeble battery but they are no longer listed on the official store. Has anybody tried out these?

https://www.batterymart.com/p-gam...={creative}&device=c&network=s&matchtype=e

I've found third-party GBA SP batteries to be pretty decent, even some of the cheaper ones.

I tried those third-party batteries. I didn't like them because at first they last about two hours after a full charge and after two years they last about 1/2 hour after a full charge. Compared to an official Nintendo battery that last about 6 hours after a full charge and last about 10 years.

Huh, I must have gotten lucky then. I've never timed it exactly, but I've been getting a lot more than 2 hours between charges.