Review: NANJG 105A 2800mA driver

humm disturbing

I had similar experiences with an P7 in the past (did not had the output as before, after overdriving it)

the T5 I have has a consistent output on par with my T6 leds on the same current , only it never pulles beyond the 3A (no problem though, most standard Li-ions don't like above 2C currents) and I noticed that a 700+ lumens is too bright for close distance uses. That is why I have put the driver in the flashlight so my eyes can have some rest.

Have second thoughts about ordering those amr18650 batt. after your post though.

Hello,
I've got a question: how can I make this driver only 1 mode?
I guess I need to bypass the MCU but which outputs of the MCU should I short circuit?

If you look at the first picture, you have to connect the lowest leg on the 7135 to the right with the top of the diode just below. A blob of tin could do it.

Then I would advice you to cut the connection to the MCU pin 7 or just clip the leg. It is the leg no.2 from the left in the upper row. You can see that it is connected to the blob of tin you just applied.

If you do not cut that leg, the MCU will struggle to pull the voltage down and use a lot of current maybe even give some smoke.

So you see it is quite easy, blob and cut.. Just be sure that it is really the 105A that you have.

Good soldering and welcome to the forum, hope you enjoy it.

thanks a lot, I'm already enjoying the forum a little while and it's my favourit :)

I will use this driver to build 1 mode flashlight based on L2 with an XML T6 and current 2,1A (for longer use considering the heat dissipation issue).

I'll also try to change the programm in the MCU to customize the mid level to 1,5A (found on other topic in this forum).

Aloha and welcome to BLF nazgool!

Glad to hear it!

Welcome to BLF and I hope you continue to enjoy your visits here.

Very interesting, thanks for the excellent details

1st welcome nazgool!

I wonder if youre capable of running 1h nonstop at 2,1A in the l2 host without overheating? I immagine you disabled 2 amc to get to 2,1A correct? Well if you did how much does mid an low draw now?

Where did you get this 105C version?

At KD.

Nautic: could you post a clear pic of both the front and the back of this 105C driver?

I cant show the led side as it sits in the pill, but the batteryside is here:

http://img502.imageshack.us/img502/2784/driverz.jpg

how do you remove the modules to lower amperage? is it just as simple as desoldering the right amount of modules? does it matter which ones? I want to drive an xpg with this driver..do I remove 4 modules to make 1.4a? can the xpg take 1.75a with 3 modules removed?

thanks

Instead of fiddling with small items try this or similar:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260599140613&ssPageName=STRK:MEWAX:IT#ht_3232wt_1009

thanks Nautic..I already ordered the 2800mah one..wish I would have known about this driver before..so to mod the 2800mah one is it just deoldering the modules? if I mess it up ill just order that 1400 mah one..

edit: the ebay driver seems to be 1-mode correct? I needed multi-mode so this wouldn't have worked..

KD has this http://www.kaidomain.com/ProductDetails.aspx?ProductId=9606

Looks like a 3-mode. You have to solder the amc7135 here though.

so it doesn't matter what slots you take out or put in with these drivers? I have the 2800mah one on the way so I can just take off 4 chips and it will run 1400 mah?

That's right. They are all in parallel.

perfect thanks!

I am a newb to this, but I have decided to attempt the driver swap this evening. I have a couple questions:

1. Will the driver work fine with the small spring that was provided with the driver? or did you swap a bigger spring on?

2. Which of the holes is positive and which is negative?

3. Do you have any more pictures of this driver installed, or pictures during installation that I can use as reference?

Thanks again for any help!