mAh is actually the capacity, not the current they can supply. You can potentially have something with a huge capacity, but it only trickles current or something with a tiny capacity that can release it all at once.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 48GB
GPU: Radeon 7800 XT
CPU: AMD Ryzen 5900X
RAM: 48GB
GPU: Radeon 7800 XT