APP00240 Battery for CAT S31 CATERPILLAR S31 3900mAh / 15.02Wh New 3441665395877 | eBay
Original 4000mAh/15.4Wh APP00240 Replacement Battery For Caterpillar CAT S31 smartphone Li ion bateria Li Polymer Batterie|Mobile Phone Batteries| - AliExpress
Cat® S31 Smartphone User Manual
Amazon.com: 3900mAh Battery Replacement for CAT S31 APP00240 : Electronics