Review: USB battery box 4x18650 Coolook PB-2000

Just ordered one.

Thanks for all your work HKJ.

It really is useful.

That is a really nice review indeed, HJK ! :face_with_monocle:

This is the best of the first 3 usb boxes I have tested. Number 4 does also have a very nice output, but has some other problems (More about that next week).

There exist a lot of these 4 cell usb boxes and their performance varies. Often you can find a photo of the circuit board, you can then compare that to the ones I have tested and see if there is a match.

Thanks for a great review. I really appreciate all the work that goes into these.

Thanks very much for the review! Sticky’d.

Thanks for the review!!! From which seller did you get it?

I found 2 places for it so far;

http://www.aliexpress.com/item/High-Quality-4x18650-External-Power-Bank-Box-For-Mobile-Equipments-Dual-2A-OutputsX2-Leds-Power-Display/688881325.html

http://www.amazon.com/Coolook-PB-2000-Indicator-Worldwide-shiping/dp/B009BEE8OK

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?