Input: AC100-240V 50/60HZ 2A Max
Output Charging Current: 2A
Charging Mode: CC-CV
Charge LED Indicator:Red-Charging, Green-Fully Charged
DC Charger Port: DC Barrel Round Plug: 5.5 * 2.1mm/5.5 * 2.5mm like the pictures
Product size:132*57*32MM
Cable length: 39.4 In / 100 CM
Security protection: OVP/OCP/OLP/SCP
Packing:
1 x Output DC42V 2a charger
1 x US plug power cord

Additional Appreciated Features:
Automatic shutoff when battery is fully charged
Compact, lightweight design for portability
Good build quality with durable plastic construction

Product features:
(1) The product energy conversion adopts high-efficiency high-frequency switching power supply;
(2) The charge management adopts microcomputer intelligent control;
(3) It has advanced functions such as product self-test, battery detection, short-circuit protection, reverse connection protection, activation of the battery protection board, automatic completion of charging, and complete cut-off of the current to the battery to prevent overshoot.

Use steps:
(1) Choose the correct charger output parameters according to the battery specifications;
(2) Correctly connect the charger to the battery to be charged;
(3) Plug the charger into the corresponding AC socket;
(4) At this time, the charger will self-check and identify the battery for a few seconds, and then start charging;
(5) During charging, the charger indicator light is red and the fan is working;
(6) When charging is over, the charger indicator lights up green to indicate that the battery is fully charged. When the low current charge is continued until the current is half of the lamp current, the current output is completely cut off and the fan stops working;
(7) Unplug the AC plug of the charger, disconnect the charger and the battery, the battery will be happily used