Review: cheap 18650 mobile power bank

Those powerbanks all fail on discharge protection because of a missing IC. This can clearly be seen on the pictures posted by alphazeta.

I have the original schematics/datasheets laying around here somewhere, its a bit of a mess, as they’re all in chinese.

Regards,

doc

I bought 3 of those:

http://www.ebay.com.au/itm/161228941965

They are also based on the 6316, but have the additional IC (protection IC) equipped. They disconnect at 2.5V and keep the bank disabled until external charging power is connected from the outside.

Regards,

doc

What is the chip identifying markings (the protection IC)?

According to the datasheet the protection chip should be DW06D. I have one battery bank from dealextreme which has an FM6316 and a chip marked CT2105 and it cuts off at aroung 2.6 volts.

Check out the price, then check out the second pic!
On sale!, regular price was $29.99

Has anyone recently received this (or any) power bank with the ETA9635 good chip?

Upon seeing this thread i contacted buyincoins a few days ago and they told me that this model is the one with the ETA9635 chip.

Absolutely, i made some pictures of mine, featuring the CT2105.

Regards, doc

WOW!! Nice pics…very clear and distinct…thanks!

Now to find a good heatsink for that good chip

I used a bit of brass strip glued down with a touch of silicon on my crappy version I soldered to a pair of Li Ion flat packs (then resoldered them parallel vs 7.4vdc power pack) I pulled out of an old netbook…really need to get me one of the good mobile power banks

I have FM6316FE (not FM6316CE) on board, but I can’t see CT2105 chip. However it stops discharge at 3.02V, haven’t checked the charge termination yet.
Can this be a good unit? Bought 15.05.14 from ebay, black one, board CHD-XS V1.1.

I believe they are talking about different one (this round 18650 power bank) which has an added CT2105 chip.

YOu guys thought you had it bad with what you received for your PowerBank. I got one off ebay and this is what I received:

Damn thing is empty! Obviously ebay got the description wrong and didn’t mention there were no components inside. ehhhh

So I’ve already got my refund, (big 1.87)…but now, where can I find the innerds for it? I’ve come across THIS at fastech and it looks to be correct (please chime in here!) , but haven’t come across the battery connections at the other end….

Help! My frugal budget got the best of me!

thanks
Dru

This looks nice except 1A is not acceptable for USB output.

Yes that unit might fit, might be able to just get some wire and solder the connections to a battery inside the box, the one that comes in a unit is a spring and pretty rigid material

I might have one laying around because I stripped one and soldered to a dual flat pack battery I pulled out of one of my kids busted netbook things

I bought this from DX
http://www.dx.com/p/gdw-jxs8-diy-mobile-power-18650-battery-box-set-w-usb-output-white-gray-312793

Cut the spring in half or 2/3 and you can fit protected batteries inside.
I bet it works with some other power bank as well.

For traveling I am trying to find a good one with a good flashlight integrated, and something to show the remaining power level, so something like that
http://www.amazon.com/EasyAcc®-Flashlight-Bluetooth-Headphones-Smartphones/dp/B00GAVCNZI/ref=sr_1_67?ie=UTF8&qid=1406937959&sr=8-67

Would you be willing to take a picture showing markings on the chips?

I will write it down when I get home

What you need is a good SLAP!
That’s just going too far. Just get a decent power bank and be done with it.
That thing looks like the proverbial ‘rat hole’ to me.

ETA9635 3412F, so it’s the good one I think

What are you talking about and who ?

From my experiences with power bank, they all are cheap made in china that will die sooner or later, either the pcb or the cheap 18650 put in there.
But I want to have one for traveling in case I go to an exotic country and a loss of power, or in an emergency backpack where I will put a 2x18650 one