Amazon.com: WWZMDiB 18650 Battery Shield Micro USB 5V/3A 3V/1A Power Bank Battery Charging Module for Raspberry Pi and Arduino ESP32 : Electronics
18650 Battery Shield V8 Mobile Power Bank 3V/5V for Arduino ESP32 ESP8 – diymore
BatteryDuino - Battery shield for Arduino by MASIH VAHIDA — Kickstarter
5V ESP8266 ESP32 16340 Battery Shield Power Bank Power Module for Arduino UNO R3 | eBay
Amazon.com: diymore 1865O Battery Holder Double Li-ion V8 Battery Shield Micro USB 5V/3A 3V/1A Power Bank Battery Charging Module for Raspberry Pi and Arduino ESP32 (2 Holders) : Electronics
RCR123A 16340 Rechargeable Battery Power Shield for Arduino — PMD Way
3.7V LiPo Battery Power Shield for Arduino — PMD Way
Battery Shield Bare Board for Arduino Uno with BOM from Senior Electron LLC on Tindie
Amazon.com: energyShield 2 Basic - Rechargeable Battery Shield - Compatible with Arduino Uno R3 : Electronics
Amazon.com: 18650 Battery Charge Shield Board V3 ESP32 ESP32S WeMos Micro USB Port Type-A USB 0.5A for Arduino Raspberry Pi Charger Module : Electronics
Overview | Adafruit PowerBoost 500 Shield | Adafruit Learning System