Review: USB battery box 4x18650 Coolook PB-2000

I got it from here: http://www.ebay.co.uk/itm/190720529779

Just noticed the sellers listing say no retail box, just put in plastic bubble wrap??

Ordered, and 4 panasonic 3100 from fasttech to go in it and not lose any batteries from the torch line up.

It does and I was very surprised when I got it in a retail box.

Maybe BIC knows you and sent a better sample? ;)

Ps. Ordered.

Will it work with flat top cells (laptop pulls)?

I doubt anybody selling these boxes could suspect I would review them, even if they did know me.

Yes.

Thank you very much, I’ll give them a try.

Ordered.

:slight_smile:

Thanks for the review, HKJ!
Just one question: do you know how much does it weigh itself, without any cable, just the empty box?

I can check it:

106 gram

Thanks for the fast answer!

Is the power switch durable?

I am not going to test that

Usual these small switches does last a long time.

Thanks HKJ, great review as always :slight_smile:

Hi to everyone, this is my first post. A totally newbie.

And thanks to HJK for this fantastic review, looks awesome but still don’t understand some of these statistics :~ , I had to learn more :bigsmile:

I’ve some question about this battery box. I’ve the same (but white color), and bought on ebay. When receive mine, I had a problem with B USB output.

The B USB can’t charge Apple devices, and as HJK comments, the problem seems that is not Apple coded. Explained to the seller the problem and he sends me another unit with the same problem |( . The seller is asking the problem to the factory and he told me that they don’t know what’s the matter, really?

But maybe is not a problem of the unit, and the unit only can charge Apple devices in A port and should recode B port to charge Apple devices at the same time.

HJK, it’s possible to recode B port? Now I have two battery box that I can’t use B port.

Thanks.

You can use port B for non-Apple devices.

If you can solder it is probably possible to recode port B.

First you must secure that there is no resistor on port B (Some devices does have that).

Then you must solder two thin wires from port A to port B (Note: I do not have any Apple devices and cannot test it).

If there is any interest I can make a illustration on the pcb photo.

Fasttech now have this Coolook in stock, with various combinations of battery.

I ordered but never received tha box from ebay. At least they refunded me.

Glad to hear that fasttech has it. Lately I’m buying exclusively from Fasttech. Nobody else compares. :slight_smile:

I almost forgot, but yes: I received one without the retail box. (Which is good, I guess. I can still make undercover reviews ;))