I have modify this NEW EW 7975 A-2 harness for a battery in the seat post to get rid that the ugly Di2 battery on the frame. If you're building a new Di2 bike this is a clean way to finish off the build. Message me, so I know what bike it will go on. This option includes a NEW EW-7975 internal modified harness, seat post battery of your choice, and balance/charger.
This kit DOES NOT REQUIRE YOU TO REMOVE THE SEAT POST TO RECHARGE THE BATTERY! It charges through the harness via. front junction harness plug, it can also charge any standard Shimano battery without removing the battery, so if you have another bike with the standard Di2 battery you can charge it as well.
New size battery is a smaller round battery (650mah, will last 5-7 months on one charge ~40 grams, 0.748" (19mm) diameter x 3.6 "
- 7.4 V 650mAh battery module is made of 2 pcs high quality cylindrical 14430 rechargeable cells , and packed in configuration of end by end
- PCB (3.0A) and poly-switch (2A) are installed to protect battery pack from overcharged, over discharged, short circuits and wrong polarity
- 4" length 24 AWG wire installed from end of pack
- Battery Pack Capacity: 650mah ( 4.81 Wh)
- Battery Pack: Voltage: 7.2V (Peak at 8.4V)
- Dimension: 0.72" (19mm) diameter x 3.6 " (92mm) length
- The battery module is wrap by PVC shrink (color may varies).
- Weight: 1.5 oz (42 g)
- Max. charge current: 1C (650 mA)
- Max. discharge current 2.0 C (1.3 A)
- Cut off voltage: 4.8 V
- Recharged cycle life: > 300
(92mm) length ) PCB/PCM built in to battery pack
This battery will fit in a seat post with an inside diameter of .800 inches/ 20.4 millimeters or larger... all 26.8 seat post AND LARGER.
I also do custom installs on non Di2 specific frames using a complete internal harness, if you need my service just ask.
If you need a complete internal harness with this option, with the battery in the seat post (see my other listing)
I have an option for just the battery in the seat post if you already have a bike with an internal harness (see my other listing for just the cable)
Note: wire and connector color varies, depending on what I have in stock
To install the battery:
- Apply electrical tape around the battery so it fits snug inside your seat post (see pictures),
- push it in (I provided zip-tie around the battery for removal see pic.),
- plug the battery connector into the seat tube cable coming out the top of the seat tube in the frame,
- put the seat post back in the bike, and your ready to ride.
For harness installation Instructions
Seat post not included!
Shimano
Internal Wiring Kit with battery the the seat post
- Internalizes all wires as well as the junction
box with the battery mounted IN THE SEAT POST,
- Length of front wire segment from junction box
to front of bicycle=950mm internal
- Length of battery wire segment from junction box
to battery connector> 900 mm internal
- Length of front derailleur wire segment from
junction box to derailleur=275 internal
- Length of rear derailleur wire segment from
junction box to derailleur=720 internal
- Internal wiring kits are only intended for use
with frames designed specifically to support Di2 internal wiring, but I have installed them in several non Di2 frames with this kit, I CAN HELP IF YOU NEED IT.
Got questions, please ask.
USA shipping is free,
International buyers: shipping is charged based on your location, and I'm not making money on shipping, it cost what USPS charges, so please DO NOT BUY THIS IF THE SHIPPING SEEMS UNREASONABLE TO YOU, AND PLEASE DO NOT GIVE ME A LOW RATING FOR SHIPPING COST. I also can't control how long it takes to arrive, and have found it is often longer then the "eBay estimate" so PLEASE DO NOT GIVE ME A LOW RATING FOR SHIPPING TIME IF IT TAKES LONGER THAN THE "eBay estimate", I ship within one business day unless there is an issue, and will notify you if I do not ship within a business day.
Payment or contact is due within 2 days of auction’s end. Paypal is preferred. Item will be shipped within < 3 business days of receiving payment. I will ship to continental US AND INTERNATIONAL, for an additional cost. Feedback is very important to me, so contact me with any issues or questions.
All my items are fully guaranteed, to meet your full expectations, if not, send it back for a refund. Buyer pays shipping. I will resolve all issues so give me the opportunity to make things right before leaving any neutral or negative feedback, or negative comments within positive feedback.
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