Amazon.com: Empire Cordless Phone Battery, Works with Panasonic KX-TGA542S Cordless Phone, (NiMh, 3.6V, 850 mAh) Ultra Hi-Capacity Battery : Electronics
Amazon.com: Synergy Digital Cordless Phone Battery, Compatible with Philips SJB4162/37 Cordless Phone, (Ni-MH, 3.6V, 850 mAh) Ultra Hi-Capacity, Compatible with Panasonic HHR-P104 Battery : Electronics
Amazon.com: Synergy Digital SDCP-H326 - Ni-MH, 3.6 Volt, 850 mAh, Ultra Hi-Capacity Battery - Compatible with Panasonic HHR-P104, Type 29, Compatible with Sony MDR-RR800/900 Series Cordless Phone Batteries : Electronics
14500 3.6V 850mAh Lithium-Ion AA Size Rechargeable w/Wire Leads
Amazon.com: 1 X Empire Cordless Phone Battery 3.6 Volt, Ni-MH 850mAh - Replacement For PANASONIC HHR-P104 : Electronics
Digital Energy Cordless Phone Battery 3.6 Volts 850 mAh Capacity DEBAT446 - Office Depot
Batteries N Accessories BNA-WB-H11697 Medical Battery - Ni-MH, 3.6V, 850mAh, Ultra High Capacity - Replacement for Heine X-02.99.380 Battery - Walmart.com