I already bought a new battery just in case. I can’t thank you enough guys.
Next steps:
RAM: I’m starting to surrender that I’ll never find a CL2.5 module other then 256 MB. I’m writing to all the eBay sellers but those who reply say always CL3.
Cooler: The SUGO SG11 clearence is 82mm. I was looking for a Noctua one to keep everything silent, but they need an adapter that Noctua is willing to send but will take time. I searched one that I could put a Noctua fan on, and I found the CM Hyper 212 Evo but it’s too high. I kept searching but I don’t understand if this or this are compatible. Or if I should ask and wait for the Noctua adapter to arrive.
HDD: In this thread two solutions emerged, a 500GB HDD with multiple partitions and dualboot, or two SSDs, 120GB for Windows 98 and 240GB for XP. SSDs would be nice, no patch needed and no bootloader (right?) but I won’t be able to add later a traditional HDD for games and ISOs (is it needed?) unless I use a SATA to IDE since the motherboard has two sata ports.