Coolnut CMPBXIP-56 Power Bank 20000 mAh- Blue

This 20,000mAh battery is a bit heavy but feels very solid and sturdy. It takes about 12hrs for it to be fully charged from 0% to 100%. That's why it's best to charge it over night. But once it's fully charged it takes a while for you to use up all it's power even at 2A output. I always test any power bank that I buy just to make sure the listed capacity is what I got and after running my own capacity test I can confirm that the capacity on this battery is even more than the listed 20,000. These batteries use 3.7v internal batteries so when it states 20,000 mAh of 3.7v which means at an output voltage of 5v it will provides about 14000mAh. In my testing I got about 16000 mAh at 5v which is more than the equivalent of the listed capacity as 3.7. Also The Power Bank keeps it's power if not used for a while. The battery physical size is a about twice as thick as my Galaxy s6 Edge and just about a bit taller and narrower than the phone.

One of the best powerbank. Little heavy but its worth the amount of power release efficiently. I'm sure it'll charge my phone four times straight once fully charged. Was using Lenovo. But this coolnut is really cool. Dont take much time to recharge while giving fast charging. Quality product this far.

Works as expected and advertisedReceived fully charged. charged my iPhone 7 four times from about 20% to 100% and only dropped 2 light from 4 as for quality only time will tell crossing finger hope I didn’t receive a lemon like some of the other bad reviews I read

As it has not much reviews I just wanted to try the product as I already used some stupid power banks... After I bought it and using since a week...It had great battery back up ,I charged my iPhone 7 , 4 times and a Jio phone once...!!Power bank is taking nearly 4-5 hours to charge full ..,But it’s worthy..,Overall Great made in India product

After one month of use below is my reviewSlow mobile chargingProduct quality looks great including packing.Has option of quick charge with c type USB connector as well.

It took 4 hours to charge 50 percent and output is slow not 2A. Output current 0.5 to 1A is low and voltage around 4.23V with usb 2 type. Fast charging output should be 5V At 2A. Weight is 0.55 kg bit heavier.

My 3rd product from Coolnut - absolutely amazing product!* Fast charging for OnePlus with 2.1 outputs* Great looks* Sturdy built* Probably the only power bank which supports C type input/charging of the power bank* Durable - the last one from Coolnywqs brought about a year back and still minimal reduction in charging capacity* Great after sales support and follow up (just in case)* Made in India product!*Reasonable price* Can charge my OnePlus 7 almost 4 full cycles

This Coolnut power bank is good power bank. I used charging four times 100% my android smart phone. I ranked this product 4 star because when I search for power bank, this power bank said a power bank of "Li- polymer". But when I received it the description says "Li- ion batteries", which is inconvenient with the advertisement.Li- polymer batteries are more durable than Li-ion batteries, so that these people used it for advertisement. Fortunately the power bank is nice in Li-ion batteries family. Package and delivery is superb.