Suitable For Doro Dbc-800d Phone Battery 3.7v 800mah 2.96wh External Charging Panel - Mobile Phone Batteries - AliExpress
Synergy Digital Cell Phone Battery, Works with Doro DBC-800D Cell Phone, (Li-Ion, 3.7V, 900 mAh) Ultra High Capacity, Compatible with Bea-fon DBC-800A Battery - Walmart.com