Fastsaw Pack of 2 Dual-Compartment 18650 Battery Shield for ESP32 Li-ion Battery Holder Supports Micro USB 5V/3A 3V/1A Output V8 Battery Shield with 2 Compartments

Product description

• The operating temperature of the 18650 module is -20 C to 70 C
• The 18650 mobile power supply module supports USB output or expansion port output, supports 5V 3A and 3V 1A output, and has a conversion efficiency of up to 95%
• The mobile power supply module is equipped with a built-in lithium battery protection IC to protect against over-current, over-voltage, undervoltage and over temperature
• 5-level LED light indicates battery level. By default, it always works and must be turned off manually (If you need to switch to non-working automatic shut-off mode, simply switch the switch to the non-working automatic shut-off mode.)
• The battery voltage is usually between 3.2V and 4.2V. No series connection of the cells is required. The voltage increases by series connection. If you need to increase the battery capacity, you can connect it in parallel