SHENMZ GBA Sp Battery, Upgraded (2800mAh) Ultra High Capacity Rechargeable Lithium-ion Battery for Nintendo GBA SP Gameboy Advance SP AGS-001 with Screwdriver

Fantastic, would recommend. Easy swap, fits right, MASSIVE extension to battery life. Would recommend.

Really good long lasting replacement battery , I play for hours and still put it to charge before it even indicates low power so it definitely will last any binge gaming sessions . It fit just as good as the oem battery and hasn't given me any issues at all.

Excellent quality, easy to replace, came with the tool. Lasts forever so really worth it. Price is decent too. It’s one of the highest capacity so get it!

Edit: after a good while and playing Boktai 2, Golden Sun 2 and even LoZ:OoS/A, this battery does last a good while long than the original, even after it's fully charged! Even if you haven't used it for a few days, it still holds up! Just be sure to charge it after wks or a month of not using it.OG: If you own an sp since it came out, want to buy one, or recently bought one second hand, this is a great upgrade for your SP. Especially if you've upgraded to a better quality screen like I've done. The battery life am testing right now after I drained it and fully charged it. I do know is that it stopped charging once the battery became fully charged. The battery itself is similar in dimension to the original battery.

This battery has worked well on my gameboys. I would recommend it to anyone looking to extend their battery life. I will say you do have to charge and discharge the battery fully to work right it was by about the 4,5th charge that the battery life was optimal.

Super high quality great big capacity! From what I paid for it I expected this to be junk but I was pleasantly surprised. Sure all this stuff comes from China now and you can get a lemon but, I got a really good one for the same money as I can get with lower capacity batteries. I don't use my game boy advance very often except if I fly or something like that. So I use it as a novelty now and then is great having this battery cuz I don't have to jerk around with a smaller battery that would give me less time. So far the battery is done well

It installed perfectly fine but apparently my battery case cover cracked while installing so haven’t had time to test it but rarely if ever had any issues with the batteries I’ve ordered.

This battery can’t possibly be 2800mah. I know that a lot of batteries online don’t actually reach the capacity they advertise, but this one is pretty blatant. Either the one I received was defective or the advertised mah is wrong. I’m getting maybe an hour out of a charge before the battery dies. I have an IPS screen on my gba sp so I’m aware of the power draw, but I primarily play at low/mid brightness and my OEM battery lasts longer than this battery does. Either the item information is false or this product has poor quality control