back in 2014 I bought a DSi and I knew nothing about flashcarts except for "R4 plays DS ROMS" so ofc I bought the cheapest one and I got this one:
(Website on the R4 is www.r4isdhc.com.cn )
And it had been working just fine as far as I remember. Last time I played with the thing was like...
Those batteries that advertise themselves as having over 1600mAh are full of crap, I once got one of those and my PSP turned off even though the battery was reporting to be at half capacity. Turns out they spoof the capacity so the PSP thinks it's got like 8 hours when it actually has less than...