@NEnder_3_741090 Not at all, it fits perfectly fine. However I purchased 10 of these boards a really long time ago and I can't find the part number unfortunately. On aliexpress they have a couple of different models from the same brand with different properties. Anyway here's the link:
https://www.aliexpress.us/item/3256802012358248.html?gatewayAdapt=glo2usa4itemAdapt
@Inversed_905098 This looks great! thanks for sharing.
Did you have to modify the case at all to fit this different PCB? if not, do you have its part number so I can add it to the description?
This turned out great ! I had another PCB laying around and did 6 batteries x 550MAH and it looks fantastic. I used a PCB with USB C instead of micro usb and it works like a charm. I've always wondered what to do with these batteries since I have tons of them and here's the answer. Thanks for the model !