di2 internal battery connector

Discuss light weight issues concerning road bikes & parts.
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daryl1
Posts: 98
Joined: Wed Oct 01, 2008 7:00 am
Location: bay area, CA

by daryl1

To anyone who did an internal di2 battery, what connector are you using?

I have a tenergy airsoft battery I am going to use with my build, but am a bit unsure whether I should stick with the mini tamiya connector or not. Is there a lot of concern with water entering the plug? I figure I can dab some silicone in the exposed areas and heatshrink the entire assembly after connected.

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

just cut the shimano connector off the battery mount and splice this onto the LiPo battery.... red to red... black to black... then connect as usual.... then u dont have to worry bout compatibility issues, or waterproofness....

daryl1
Posts: 98
Joined: Wed Oct 01, 2008 7:00 am
Location: bay area, CA

by daryl1

How do I charge the battery without cutting and soldering every time then? :shock:

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

daryl1 wrote:How do I charge the battery without cutting and soldering every time then? :shock:


On the tenergy I used, there were 2 connectors, one generic, and one for charging...
Cut the generic off and solder/heat shrink the shimano connector on... The charging connector remains to allow easy charging....

markc
Posts: 189
Joined: Thu May 17, 2007 2:23 am

by markc

Internal routing on a P3C using JST connectors on the power leads for me.

daryl1
Posts: 98
Joined: Wed Oct 01, 2008 7:00 am
Location: bay area, CA

by daryl1

I don't have the original di2 battery, that's probably why I was confused :D

Looks like I'll just stick with the mini tamiya connector and shrink wrap the connection

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

Not the battery, just the battery mount... It is standard with the internal wiring harness.... Just cut the mount off the harness and join the battery on at this point, leaving the charging connector in place


daryl1
Posts: 98
Joined: Wed Oct 01, 2008 7:00 am
Location: bay area, CA

by daryl1

drmutley wrote:Not the battery, just the battery mount... It is standard with the internal wiring harness.... Just cut the mount off the harness and join the battery on at this point, leaving the charging connector in place


Ah thanks a lot, makes sense. I was a bit confused because I don't have a balance charger, just a generic lipo battery charger (2 pin setup). Gonna see if I can exchange it for a 3 pin balance charger, this seems like the cleanest solution :)

petemilligan
Posts: 2
Joined: Mon Feb 27, 2012 9:58 pm

by petemilligan

Dammit wrote:Image

Image

http://www.amazon.co.uk/gp/product/B005 ... 05_s00_i00" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;



Here's version two the battery. Now with 18mm carbon fibre tube & capped with resin/micro-balloon slurry. weight is down to 60g.Image

daryl1
Posts: 98
Joined: Wed Oct 01, 2008 7:00 am
Location: bay area, CA

by daryl1

Just got the internal harness in today. Lucky I ordered the harness that has an extra long wire for the seatpost battery :D looks like it will fit perfectly.

Cut off the battery wire and I see there are two red two black. I'm assuming there are 2x positive/negative from the same power source, is that correct? If so it looks like all I have to do is solder the positive and negative to the battery 2 leads to one. Seems logical, just wanna be 100% sure!

Thanks for the help guys :D

Dammit
Posts: 443
Joined: Sun Mar 27, 2011 8:16 pm

by Dammit

Version 2 looks good Pete, when can I get my hands on one?

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

daryl1 wrote:Just got the internal harness in today. Lucky I ordered the harness that has an extra long wire for the seatpost battery :D looks like it will fit perfectly.

Cut off the battery wire and I see there are two red two black. I'm assuming there are 2x positive/negative from the same power source, is that correct? If so it looks like all I have to do is solder the positive and negative to the battery 2 leads to one. Seems logical, just wanna be 100% sure!

Thanks for the help guys :D

Yep

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