2 Slot 18650 Battery Holder Dual Slot V8 Battery Shield Micro USB 5V/3A 3V/1A Portable Power Bank Charging Module for Raspberry Pi Arduino ESP32 3.92 in x 1.89 in

Dimensions: 99.8 mm x 48 mm / 3.92 in x 1.89 in Weight: 40.4 g Quantity: 1

• Dual-voltage stable output: Supports rated outputs of 3V/1A and 5V/2.2A, with a maximum emergency output of 5V/3A, meeting the power requirements of a wide range of DIY electronics projects.
• Dual 18650 battery compartment design: Supports two 18650 lithium batteries (65mm standard cells). Dual-cell power supply ensures longer battery life, making it the top choice for DIY power banks.
• Convenient Micro USB charging: Micro USB charging current of 600mA 800mA, compatible with standard USB chargers, making it easy to use
• NORMAL/HOLD Dual Operating Modes: NORMAL mode automatically enters sleep mode under light load to conserve power; HOLD mode provides continuous output, suitable for various DIY scenarios.
• Reverse Polarity Protection: Clear positive and negative polarity markings on the board; incorrect installation will immediately destroy the module, so please ensure polarity is checked during installation.