Input voltage: AC 110V / 220V (AC100-240V suitable for anywhere in the world voltage level).
Output interface: 5.5 x 2.1mm (With built-in leaf spring, Compatible with 5.5x2.5 / 2.1mm ).Before buying, be sure to confirm that the interface size of this product matches with yours. Wrong size will not work!!!
Output: DC 4.2V 2A (Suitable for 3.7V 4.2V 1-string Lithium Battery Pack)
Output Wire length: 1m / 3.28ft.
With over-current protection, over-discharge protection, over-voltage protection, overcharge protection, short circuit protection.（Enter Protection mode , with flashing red light）
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 5.5x2.1 mm). 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.
Parameter: Input voltage: AC 110V / 220V (AC100-240V suitable for anywhere in the world voltage level). Output: DC 4.2V 2.0A. Output Wire length: 1m / 3.28ft. Output interface: 5.5 *2.1mm With over-current protection, over-discharge protection, over-voltage protection, overcharge protection, short circuit protection.（Enter Protection mode , with flashing red light）.
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: 1*4.2V 2A Power Adapter Li-ion Battery Charger
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
It is an exact replacement for a bicycle light that had a failed charger, I knew the voltage and amperage would be the same because I searched for that, but it is the exact same perfect unit.
I got this to replace a nearly identical unit that I wrecked accidentally. I allowed the original to overheat until it failed due to my own carelessness. I was delighted to find quickly on Amazon this replacement with the same specs and form factor.
We have a large patio umbrella that has built in LED lighting. This is an exact match voltage/amperage for the power adapter that shipped with the umbrella, and works well....until it doesn't. At best I these last about a year - and I bet it only gets used for a few hours once or twice a month. Yes, it's outdoors - but it's shielded from the sun/rain by the deck. I have learned to caulk up all the seams after one obviously had water intrusion - but the last one to fail was perfect inside - no signs of moisture - or any burned components - just dead. I would give it less stars but it's cheap enough to just keep some 'in stock' and replace once a year. Plus I'm sure outdoors wasn't what it was designed for no matter how well I have it protected. Shame I can't find a high quality unit with the same voltage/amperage.
It simply worked reliably and did exactly what we needed.. We lost the charger for a lithium battery powered home appliance, and we got lucky with this as a replacement !
