Rating:

4pcs 186 50 Charging Board Dual USB 5V 2.4A Mobile Power Bank Module 186 50 Lithium Battery Charger Board with Overcharge Overdischarge Short Circuit Protection DIY USB Power Bank Board

Amazon.com Price: $14.99 (as of 15/07/2019 09:24 PST- Details)

√★ ★ ★ Note: The positive pole of the battery is connected to B+ and the negative pole is connected to B-, do not reverse it. If it is reversed, it will burn out!!!!
√This module is a portable backup power supply with an input that matches the 5.0V adapter to charge the internal battery. Use built-in battery for portable device to provide 5.0V/2.1A USB2.0 supply output for external devices. It has three ports: Micro USB port, two USB port.
√Protection: overcharge protection, overdischarge protection, short circuit protection, constant current.

SHOP NOW

√★ ★ ★ Note: The positive pole of the battery is connected to B+ and the negative pole is connected to B-, do not reverse it. If it is reversed, it will burn out!!!!
√This module is a portable backup power supply with an input that matches the 5.0V adapter to charge the internal battery. Use built-in battery for portable device to provide 5.0V/2.1A USB2.0 supply output for external devices. It has three ports: Micro USB port, two USB port.
√Protection: overcharge protection, overdischarge protection, short circuit protection, constant current.
√Charging port: Micro USB input port and dual USB output port.
√Size: 6.8 * 2.3 * 0.1cmcm; Output current: 5V 1A/2.1A; Input voltage B+ to B-: 3.0 – 4.2V.

Brand

Color
Manufacturer