DC 2.6-5.5V to 5V 2A non-isolated step up (boost) module.
Max 2A output, up to 93% conversion efficiency.
With red green battery indicator, the red led lights up when it lower than 3.6V.
With over-current protection, over-temp protection to protect the circuit.
USB output interface, used for mobile phones, Ipad, MP3, PSP, etc. charging power supply DIY.