Hardware Hacking GBA Best GBA SP battery for EZ-flash DE?

[kbell917]

Does anyone know of a good long-lasting battery for the GBA SP? I know using the EZ-flash DE drains battery faster than a normal cartridge but I'm sure that by now that there is something that can last for hopefully 6 hours.
the original battery it came with only lasted a total of 2 hours and 30 minutes
this one i got recently only lasted for 3 hours total: https://www.batteriesplus.com/battery/video-game/nintendo/game-boy-advance-sp/mse10001
so far this has been the best one with a total of 5 hours: https://www.aliexpress.com/item/4000219954102.html?spm=a2g0s.12269583.0.0.715c10ff9Abawh
Do tell me if there is a better one out there because I want to get as much time with my GBA as possible.

 

[Shadow#1]

Does anyone know of a good long-lasting battery for the GBA SP? I know using the EZ-flash DE drains battery faster than a normal cartridge but I'm sure that by now that there is something that can last for hopefully 6 hours.
the original battery it came with only lasted a total of 2 hours and 30 minutes
this one i got recently only lasted for 3 hours total: https://www.batteriesplus.com/battery/video-game/nintendo/game-boy-advance-sp/mse10001
so far this has been the best one with a total of 5 hours: https://www.aliexpress.com/item/4000219954102.html?spm=a2g0s.12269583.0.0.715c10ff9Abawh
Do tell me if there is a better one out there because I want to get as much time with my GBA as possible.

I use these and the battery last why longer

https://a.aliexpress.com/_mKoXA4w

https://oshpark.com/shared_projects/gaB93JkC

 

[Titney]

If I could get one in the EU I would get one of these:
https://heldergametech.com/shop/batteries/game-boy-advance-sp-megabat800/
There's a lot of positive feedback for Helder's batteries on reddit.