3 Skype CS-SKP512SL VoIP Phone Battery 3.7 volt Li-ion 1000mAh 2 Year Warranty Program
Synergy Digital VoIP Phone Battery, Works with SMC Skype Wifi Phone VoIP Phone, (Li-Ion, 3.7V, 1050 mAh) Ultra High Capacity, Compatible with Belkin W0001 Battery - Walmart.com
Skype for Android promises 'aggressive battery savings' - CNET