WonderSwan v5.2: Color Only?

[Flavor]

Based on Danno's mention of different brands maybe working, we pulled out a bin of used batteries. The Voltage is just measured with a meter, since the batteries are used.

1.57v Sunbeam Heavy Duty - Would Not Boot
1.43v Duracell Alkaline - Would Not Boot
1.53v Kingever Carbon Energy - Would Not Boot

1.54v DGHome Alkaline - Waited for a while and then booted (like in Danno's video)
1.56v Duracell Alkaline - Seems to boot consistently, but sometimes a little slow to boot.
1.53v Energizer Alkaline - Seems to boot consistently!
1.56v Energizer Alkaline - Seems to boot consistently!
1.6v Sunbeam Alkaline - Seems to boot consistently!
1.6v Rayovac Zinc Carbon - Seems to boot consistently!
1.55v Amazon Basics Alkaline - Seems to boot consistently!

We also have another B&W WS that is much more temperamental. I assume it has some weaker capacitors or something. It won't even boot up this cartridge if we power it via our benchtop power supply.