Amazon.com: Synergy Digital Camera Battery, Works with Fujifilm X20 Digital Camera, (li-ion, 3.7V, 1000 mAh) Ultra Hi-Capacity, Compatible with Fuji NP-50 Battery : Electronics
1200mah Li-ion Np-50 Battery For Np50 D-li68 Klic-7004 Battery, For Fujifilm X10 X20 F50 F305 F85 F200 F100 F50fd F75 F665 F775 - Digital Batteries - AliExpress
Amazon.com : Replacement for Fujifilm X20 Battery and Charger with Car Plug and EU Adapter - Compatible with Fujifilm NP-50 Digital Camera Batteries and Chargers (1100mAh 3.7V Lithium-Ion) : Electronics