Sell Mobile Power Bank Battery Charger Module Board Dual USB Digital Display 5V 1A/2.1A best price

_____________♂♂♂♂ Shop introduction ♂♂♂ ____________ Welcome to magicstore, We insist on the lowest price to sell the best quality items. Decription: Descriptions: 1. Meet the individual needs of your DIY, but you must understand basic electronic assembly. Output voltage and current stable, will not harm user devices. 2. Output overload display: Long-press LED button, start output, The screen will display OUT and the voltage and current accordingly, 5V1A or 5V2.1A. 3. Protection function: it has integrated protection circuit of boosted battery to prevent over discharge and overcharge. Overload. 4. The circuit board is connected to the battery negative B-, B + is the positive, do not connecting reversed, connecting reversed will burn the board. 5. Can connect 1 or more batteries, the capacity do not exceed 200,000mAh, suits for voltage 3-4.2V. Notice: The module layout would change slightly from time to time, but the function remains unchanged. Specifications: Size: 58mm*27mm*15mm(L*W*Thick) Included: 1 x Battery Charger Module Board