NOYITO 16.8V 1A Power Adapter Li-ion Battery Charger with LED Indicator 5.5 x 2.5 2.1 mm Interface Suitable for 14.4V 14.8V 16.8V 4-String Lithium Battery Pack
NOTE: 1..Before buying, be sure to confirm that the interface size of this
product matches with yours. Wrong size will not work!!! ( The interface size
of this product is 5.5x2.5 2.1mm). 2. This product has many kinds of
protection functions, enter the protection mode, LED lights will flashing red
light. When this happens, unplug the adapter immediately and check if the
circuit is short-circuited, if the electrical power exceeds the rated power of
the adapter, etc. 3.One-year after-sales warranty, please contact us if you
need it. Parameter: Input voltage: AC 120V / 220V AC100-240V. Output: DC
16.8V±0.1V 1A. Output Wire length: 1.2m / about 4 ft. Output interface: 5.5 
2.5 2.1mm Charging process LED indicator changes: 1. No-load status LED is
green; 2. Charging, the first phase of constant current charging, LED
indicator is red. Charge to the rated voltage into the second phase of
constant voltage charging, the current slowly decreases. 3. When the battery
power reaches 90-95%, LED lights turn green. At this point the charger will
continue to charge with a small current until it is full. Package Included:
1pcs NOYITO 16.8V 1A Power Adapter Li-ion Battery Charger
 
Product Features
  

         
Input voltage: AC 120V / 220V (AC100-240V suitable for anywhere in the world voltage level).
         
Output: DC 16.8V  0.1V 1A (Suitable for 14.4V 14.8V 16.8V 4-string Lithium Battery Pack), With over-current protection, over-discharge protection, over-voltage protection, overcharge protection, short circuit protection.(Enter Protection mode , with flashing red light)
         
Output Wire length: 1.2m / about 4ft. DC Output interface: 5.5 * 2.5 2.1mm . Before buying, be sure to confirm that the interface size of this product matches with yours. Wrong size will not work!!
         
***********One year after-sales warranty, please contact us if you need it.**********
         
We have upgraded the product. Changed the design of the product to make it more stable when working, and reduced the size of the product to make it more portable. It also improves the charging efficiency and stability of the product.