Synergy Digital Cell Phone Battery, Compatible with CATERPILLAR S50 Cell Phone, (Li-Pol, 3.8V, 2600mAh) Ultra High Capacity, Replacement for CAT CUBA-BL-00-S50-000, S50 Battery - Walmart.com
1x 2680mah 10.05wh Repalcement Battery For Cats50 S50 Bateria Batterij Batteries - Mobile Phone Batteries - AliExpress
Amazon.com: Gallagher S50 12V Replacement Battery by UPS Battery Center : Health & Household
Portable Emergency AA Battery Charger Extender suitable for the Panasonic SDR-S50 Video Camera - with Gomadic Brand TipExchange Technology - Walmart.com