Provides extra backup power to all devices that supports USB charging. E.g. iPhone, Android, tablets, MP3 players, GPS units, etc This unit takes 1-4 replaceable UNPROTECTED 18650 li-ion batteries to power and recharge your USB devices Powerbank can be recharged via micro USB port Charging management protection Processing monitoring protection Reverse battery protection
Features:
* Adopt Micro USB DC 5V input, single slot independent charging and management system.
* There are two kinds of charging currents to choose from (500mA/1000mA).
* The built-in LED indicator shows the real-time voltage and current of the charging status.
* Automatic identification of Li-ion and Ni-MH batteries and manual selection of LeFePO4 batteries (Automatic identification of 1.20V/3.70V batteries, manual selection of 3.20V/3.80V batteries).
* With protection of overcharge and over-discharge, short circuit, intelligent identification of bad batteries and reverse battery detection.
More Pros:
* Automatic detection of battery polarity (+- polarity).
* With 0V voltage activation function, 1.6-2.2V cannot be charged.
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Features:
Support BT 4.0, the transmission speed is faster and more stable, can effectively reduce the sound quality damage.
Compatible with all devices that support BT A2DP protocol, such as mobile phones, tablets or computers.
Two mobile phones can be connected simultaneously.
Double click the earphone multi-function button to redial the last broadcast number.
Powerful 5 volt / 3.6A charger charges quickly.
Intelligent Circuit Design protects against over-heat, over-currents, over charge and short circuit.
Compact and portable.
