Yet Another GBA SP Battery Mod

NEW! Order a battery and a PCB (still requires assembly but if you only need one, it's probably cheaper this way) straight from RGRS: https://retrogamerepairshop.com/produ...

Now also stocked PRE-ASSEMBLED from Retromodding: https://www.retromodding.com/collecti...

Want to bump up the capacity from 550mAh to 900mAh? Want to do it really cheaply (possibly cheaper than a replacement stock battery)? Oh boy do I have the mod for you.

This mod uses two things and is 100% reversible as it requires ZERO modification to your SP. It does require soldering but NOT to the SP. You'll need a 603048 sized LiPo and an adapter (see below).

Check out my shared project on oshpark: https://oshpark.com/shared_projects/g...
or the github repo I made for this: https://github.com/makhowastaken/AGS_...

For reference, these are the specific batteries I ordered: https://www.aliexpress.com/item/33001... but there may be higher quality or cheaper options (or both). Link is provided for reference. This is a standard part.

When you use the oshpark link, it's $2.70 USD for SIX PCBs. Shipped. Worldwide. The batteries are just over $3 per cell (if you get multiples). So if you do four mods, your cost per mod is about $3.80. GBA SP batteries are between $6 and $12 on aliexpress and at only 60% the capacity, that seems like an awful deal in comparison.

It's worth noting that if you have one of those cheapo green/teal cells from China, you can just remove the original cell from that and place this new cell inside the frame and solder it to the original battery board. This results in a much cleaner look and install: https://i.imgur.com/Ouc8rgy.jpg