Di2 Battery Hack Question

[NiFTY]

Has anyone broken down an internal di2 battery to make it smaller/more flexible so it may fit into a tiny frame hole

Context - I have a slice RS - which has very small frame openings and cannot fit a standard internal battery, but am wondering if i broke down a btr2 and extended the wiring loom with soldering whether it might be safe to make the battery a bit more flexible ie (chipboard, flexi wire, battery 1, flexi cable, battery 2, all wrapped in some flexi plastic or loosely heatsrunk heatshrink.

Anyone done this?

[NiFTY]

Also does anyone know how big the non-modifiable electronics on the barend port are - I could modify it to sit in the plug in a pro missile evo if the vital part is 14mm or smaller.

[Kimmoth]

If you gutted a battery, you could probably swap the cell/s for something with a different form factor if necessary. What's the deal, does a Slice RS have an ISP?

[ParisCarbon]

If you gutted a battery, you could probably swap the cell/s for something with a different form factor if necessary. What's the deal, does a Slice RS have an ISP?

Slice RS seatpost is super narrow... If I recall maybe 2cm length and 7mm wide.. it was probably right on the limit of the 3:1 ratio and as narrow as possible... They used to mount the big fugly di2 battery under the BB/rear brake area... I owned one, it was absolutely awful to setup!!!

[Kimmoth]

I'd try to get hold of a dead battery, to see what the biggest internal part is aside from the cells. I think LiPo cells are all basically just a flat sheet that's folded or rolled up anyway, so there should definitely be scope to get cells in there.

[TurboKoo]

I placed battery in handlebar extension and works fine.

[rainerhq]

taking apart BCR2
https://www.youtube.com/watch?v=eXVhNUqRdfE

[NiFTY]

Yep seen that video. Its essentially 2 AA battery plus the chipboard. Seems that if deconstructed I could get it into the downtube. My bars are pro evo missiles - so too narrow.

[Kimmoth]

Better if you can get the weight down low anyway.

[NiFTY]

The TT is a pig at almost 9kg. With a 71kg pilot plus gear not sure it will make a big difference in terms of flickability where a 150g battery sits.