Amazon.com: Synergy Digital Cordless Phone Battery, Works with GP GP80AAAH3BXZ Cordless Phone, (Ni-MH, 3.6V, 800 mAh) Ultra Hi-Capacity, Compatible with Clarity C4220/4230 Battery : Electronics
Enercell 3.6v 700mah Cordless Phone Battery Panasonic KX 23-907 for sale online | eBay
2x 3.6V 800mAh Cordless Phone Battery For AT&T 27910 GE 5-2522 5-2721 27990 USA 713651426531 | eBay