Pass through charging is not working on Lii-202. So usb output is not working if usb input is connected (with or without batteries inserted). Any way to fix this? Like manually connecting usb input contacts (+ and -) with usb output? Any concerns why I should not do that?
Lii202-V7 pcb
10/28/2016
WHat’re the changes to the version v3 ?
Hmm, new ones have problem with low voltage charging in one slot.
One slot is 4.17-4.18V and other is 4.11-4.13V tested on three samples. So they mess something in this new ones in whole batch, does someone else notice this ?
I bought one several years ago where 1 slot charged around 4.20 and the other around 4.17 so it’s not a new issue.
Yep, but now it is eaven lower 
What cells are you charging, I try with 30Q and get that results, right now I charging on one sample that I have from 1-1.5 years ago and will report about half hour what I get on it…
I was charging Panasonic 18650B’s at the time. I threw the charger into my earthquake supplies so I haven’t used it since then.
Yep, it is not about different cells.
This older one that I test now, I get after rest in right slot 4.21V and in left 4.17V, new ones are like I said right 4.17-4.18V, and left 4.11-4.13V…
Does anyone warn them about this, do they have account here so we can ask them to repair this ?
I bought one just for 4 x Li-Po4 AAA’s I bought.
It works fine for them.
Battery’s read even when checked on Multi.
Plus evenly charges any 18650/26650’s I’ve had in there.
Everything else I do with Xtar VC 4 and VC 2.
I also use a NIKON 3.5A cable for all my chargers.
I use Panasonic B’s, Samsung 30Q in 18650,
With Soshine 26650, 14500, and Li-Po4 10440’s.
Those Soshine are cheapies that seem to give constant output
and lots of reserve for the price. Can’t complain so far.
Does anyone know if there is a fairly simple way to fix this so both bays end up at about 4.19V - 4.20V??
If so, what is it??
Any guidance appreciated…… :+1:
Maybe enjoy your dual output voltage setup? O:-)
Cheers :-)
I got no idea what your talking about. :person_facepalming:
So, if you don’t mind…….
……IF there is anything to explain… please explain it. 
Otherwise…. I’ll just assume it was a BS comment. … :innocent:
For me “enjoy your dual output voltage setup” means deal with it or sort of.
A relatively simple solution can be wiring both channels in parallel. Should work well without issues due to being reverse polarity protected. If you do this the charging current would become 1A/2A shared for both channels.
Wait for someone else to chime in if in doubt.
Cheers ^:)
Thanks for the review, I bought this at Gearbest a year ago and never unpacked it. Finally found it in the original shipping envelope and started using it! It felt like a Christmas gift I gave myself 
So far it is as described above, great charger.
He means, sometimes it’s conservative not to always charge cells up to maximum voltage, because that reduces lifetime of the cells, while not doing much toward keeping the light on and fully bright — probably just a few minutes’ difference.
Try a test, put a phone camera on time lapse and see how long a light stays usefully bright when charged from either side of the charger.
And charger circuits are specified to plus or minus five percent, so if you have several chargers, you can keep track of which ones produce which results — and take advantage of knowing what you have.
Or so it seems to me.
I bought one of these last fall. Used it maybe 6-10 times. Last night, tried to charge a pair of batteries and only the left side seems to be working. All of the LEDs light up when 1st plugged in, but the right side does not react when I put a battery in.
Anyone else have issues with this model?
I took it apart last night. Simple fix. One of the wires that attach the board to the sliding terminals came off. Had to re-solder. Working fine after that. I decided to bolster the solder on the other side as well to prevent this from happening again. Factory solder is very thin.
True. Connecting wires are flimsy too, though I've seen worse in certain toys. Had to repair some Disney Star Wars laser led swords, found 30AWG wiring inside. Extremely brittle in the solder joints. It's sickening stingy how certain stuff is manufactured.
^:)
My Battery’s I like charged to the 4.14ish rather than the 4.20 max.
They last longer, and extra output.
Really…
It’s a bit like over cooking your car battery all the time.
Max load internally but you lose 10+% life of battery.
I usually start charge at 1A Then drop down to 1\2 A
at around 50/75% charge, slow and easy.
That last little bit at the end doesn’t really give anything discernible in real life.
Just looks good to some on paper hey.
mine has balanced 4.21v both sides.
but its power bank was very noisy.
it put hiss on a powered usb speaker.
i put a low esr tantalum between usb - and +
it fit neatly between the frame to ground joint and the trace the 2 mlcc are on.
i used this as i have a reel of them.
10v rated 220uf