Gen 1 Battery Help

This is my 5th year using VEXIQ in my 8th grade Robotics Class. Unfortunately, most of the Gen 1 batteries are not holding a charge anymore, or they are not charging at all. Does anyone know where I can buy more batteries for the VEXIQ Gen 1 kits? Or does anyone have any that they want to get rid of, I will pay for shipping.

Any help would be appreciated!

Thank you

Welcome back! You can buy the regular battery sold here IQ Robot Battery (Li-Ion, 2000 mAh) - VEX Robotics. The battery works for Gen 1 and 2.