Tranzx / Ebco BMS question

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monk3e   100 µW

100 µW
Posts: 8
Joined: Apr 01 2015 2:44am

Tranzx / Ebco BMS question

Post by monk3e » May 19 2016 7:40pm

I have recently re-celled a tranzx bl07 battery pack, fotted to an Ebco store bought ebike.

The bms seems to be in some sort of protection mode now, understandably as i have cut balance connections to rejoin the new cells. The pack also seems to run a canvus system for communication.

However I'm struggling to get the bms to reset and output the full voltage of the pack. The bms has a coin cell which i have removed, along with all other battery connections for a while.

Any information you might have would be hugely appreciated.

testapilata   1 µW

1 µW
Posts: 1
Joined: May 31 2016 5:17pm

Re: Tranzx / Ebco BMS question

Post by testapilata » May 31 2016 5:37pm

Maybe this will help.
Found in a German Forum:

http://www.pedelecforum.de/forum/index. ... rte.29424/
Almost at the bottom of the page thread by "Tigerduck".

If you can't read german, he mentions 2 orange wires connected to the charge connector pin2 and pin5 . On the PCB they are connected to RSTN and GND. They need to be shorted for a short time to reset the BMS.
picture found at the same forum (http://www.pedelecforum.de/forum/index. ... ung.29198/).

However, i refitted a tranzx bl05 battery . The orange wires are missing with this type of battery and i didn't need to reset it. So the "protection mode" doesn't seem to be activated with all models.

One more thing, the German fellow warns : this procedure is at YOUR OWN responsability, On his battery it worked.

Hope i Could help you

monk3e   100 µW

100 µW
Posts: 8
Joined: Apr 01 2015 2:44am

Re: Tranzx / Ebco BMS question

Post by monk3e » Jun 02 2016 5:07am

Thank you very much for your reply. After talking to the customer it turns out he just hadn't charged it long enough! D'oh!!

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