Original Li lon Battery 3.7V For MadCatz Saitek Cyborg R.A.T.9 Gaming Mouse|Tablet Screen Protectors| - AliExpress
David Kozlowski on Twitter: "My R.A.T 9 - 6 months old, almost exploded in my hand tonight when the battery started smoking. I quickly thew it out the window. Not happy https://t.co/TBuLsIZ8lI" /
Replacement Mouse Battery For Saitek Mad Catz Rat 9 Mouse Gaming Mouse - Mouse - AliExpress