Features:
<br />Constant voltage and current for charging.
<br />Not charge when the battery positive and negative is reverse.
<br />Charging for flat cylinder lithium batteries, 18650/16340
<br />Repairing the low-voltage battery.
<br />Trickle charging function, to ensure that the battery is in saturated.
<br />Input: 100-240V, 47-63Hz.
<br />Output: 3.7V/500mA.
<br />Size:10.8 x 4 x 4cm