Light way to secure Di2 Battery

[coresare]

Hi has anyone found a light way to secure their seatpost Di2 Battery. The Ritchey rubber one is listed at 10 grams.

[adilosnave]

I just use some foam core to push up in there. It's a press-fit but hasn't moved yet. Aero seatpost so don't have many other decent options.

Light and extremely cheap. Has worked fine for years.

[pdlpsher1]

I can't mount a battery in my seatpost either. So I just wrapped the battery in bubble wrap and tie a string to the battery, and inserted the battery down the seat tube until it hits the upper bottle cage mounts. It works great. The string is there in case I need to pull the battery out.

[RyanH]

A spare strip of deda bar tape works well and is only a few grams.

[Imaking20]

The battery in the seatpost of my Wilier has got a couple rubber bands around it to make it large enough to require a good bit of friction to push it into the post. Hasn't moved or made a peep.

[wheelsONfire]

Hi has anyone found a light way to secure their seatpost Di2 Battery. The Ritchey rubber one is listed at 10 grams.

Some bar end plugs work. You just need to make a hole in them.

[deepakvrao]

I can't mount a battery in my seatpost either. So I just wrapped the battery in bubble wrap and tie a string to the battery, and inserted the battery down the seat tube until it hits the upper bottle cage mounts. It works great. The string is there in case I need to pull the battery out.

I do the same, but put it in with the wire up, and use a bent spoke to hook it out when needed.