1800mAh Replacement Battery for Sony PS3 CECHZC2U Controller Battery Replacement, Compatible with Sony Playstation Gold Wireless Headset and Dual Shock 4 PS4 CUH-ZCT1U Controllers : Video Games - Amazon.com
Replaced PS3 controller battery with old cell phone battery to avoid buying new controller. Should I be worried? It's not pretty, but it seems to work fine takes a charge again! :