Author Topic: Imax B6 clone mosfet replacement  (Read 3806 times)

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Offline Unordung

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Imax B6 clone mosfet replacement
« on: September 09, 2017, 04:35:39 am »
Hey guys.
So I had a few glasses of wine and decided to charge a lithium battery using alligator clips....  |O
A sane person would see the issue here but alas I'm clearly not that bright.

Long story short I connected a 6 cell lithium battery in reverse polarity........  :-//

I know its cheap, I know I can just get another and I know it's more trouble than it's worth. Alas I want to repair it.
It seems to have blown the neg rail mosfet (judging by pinout).

However I cant find any info on the fet nor can I read the breed as it is a little crusty.
Does anyone know with certainty the part number? The genuine schematic suggests it may be a 6680 n fet.


Kind regards,
 

« Last Edit: September 09, 2017, 04:37:53 am by Unordung »
 

Offline BradC

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Re: Imax B6 clone mosfet replacement
« Reply #1 on: September 09, 2017, 04:43:48 am »
Mine clone is currently doing a 20 hour discharge test on an SLA. If you don't get any help I'll whip the cover off tomorrow and have a look, but the clones are usually a direct copy so I'd suggest whatever is in the original schematic will do.
 
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Offline Unordung

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Re: Imax B6 clone mosfet replacement
« Reply #2 on: September 09, 2017, 05:13:58 am »
Cheers mate.
Yeah I was thinking it is likely a direct clone. If you can rip the top off and have a look the would be awesome.
I would rather replace it with the exact same therefore limiting any other issues.  :scared:

Cheers
 

Offline Armadillo

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« Last Edit: September 09, 2017, 05:51:45 am by Armadillo »
 
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Offline Unordung

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Re: Imax B6 clone mosfet replacement
« Reply #4 on: September 09, 2017, 06:38:15 am »
here is the useful link;

https://www.eevblog.com/forum/repair/fake-imax-b6-repair/msg1133704/#msg1133704

Its a N Channel Mosfet

http://www.ebay.com/itm/4pcs-Original-AO4468-4468-N-Channel-Enhancement-Mode-FET-Alpha-Omega-SOP-8-/261012270586?hash=item3cc58b2dfa:m:mI4KQW4YlRZ-vTvypNSWRWA

Thank you, I did skim that thread and missed the N-chan part. I thought it was all about the P-chan.
I ordered 10, hopefully that fixes it.
Thanks again.
 

Offline Unordung

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Re: Imax B6 clone mosfet replacement
« Reply #5 on: October 20, 2017, 08:57:36 am »
A big thank you to Armadillo.
The Fet came in today, I replaced it and the device works as per usual!
Thanking you for your assistance mate!
 

Offline Armadillo

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Re: Imax B6 clone mosfet replacement
« Reply #6 on: October 20, 2017, 10:23:16 am »
Great thanks. Happy for you mate...  :-+ :clap: :scared: :clap:
 
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