T-Mobile 875 One Touch 875 One Touch 875T Sparq 2 Replacement Battery: BatteryClerk.com
Gomadic High Capacity Rechargeable External Battery Pack suitable for the T- Mobile Springboard - Portable Charger with TipExchange Technology - Walmart.com
Amazon.com: Battery Pack LI3730T42P3h6544A2 Replacement Battery for T-Mobile MF96 Sonic 2.0 LTE Mobile Hotspot Sonic 2.0 4G LTE 3000mAh 11.1Wh : Cell Phones & Accessories