Top critical review
Doesn’t deliver the advertised amperage.
July 11, 2018
I wanted a battery backup, aka power bank, for a device whose specs call for an input of 5V and 2.5A. This battery pack has 2 ports. It advertises1 port of 5V and 1A and the second port of 5V and 2.5A. Perfect for my needs.
When my device complained of low amperage, I used some equipment I have to test the ports. I placed known loads on each port. On the port listed as the 1A port, the tests showed voltage of 5.0; +/- 0.1V and amperage of 0.8 to 0.9 amps. The port listed as 2.5A, the tests showed 4.9V, +/- 0.1V and 1.7 amps +/- 0.1A.
The port listed as 2.5A is not even close to its stated amperage output. Unsuitable for my needs. I’ve sent a message to the seller but no response yet. I’ll be returning this product.
Update: The manufacturer contacted me and offered a full refund and I didn’t have to return the product. Very good customer service!