PRODUCT
• Sold as a set of two.
• A simple yet effective way to internally mount your Di2 system battery
• Hi-grade silicon will not slip, rot, crack or rust
• Suitable for aero or 31.8mm round seat posts
• Similar product for 27.2mm posts – Coming soon

OVER-ENGINEERED COMPLEXITY
There appears to be an entire industry out there trying to see who can create the most complex Shimano Di2 internal battery retention device! Rubber bands, shims, screws, washers, clips...
Engineers at Nex-Gensports have designed and produced what is undoubtedly the simplest and most effect retaining device in the market.

PATENTED PRODUCT
Made of hi-grade flexible silicon rubber these mounts:
• Will not rust or deteriorate
• Will not slip inside any suitably shaped tubing
• Both battery ends centres and secured – No battery rattle over cobbles
• Are designed to conform to regular 31.8 seatposts and most aero-shaped posts*
• Easy to install and remove without any special tools
• Low weight – Only 5.25 gms per piece
• May be trimmed to shape for aero posts if required
*27.2 round seat post design available soon
Ted AZ –
Have looked for suitable battery mounts for a long while for my aero post. These have done the job perfectly. Got them through the post within 3 days of ordering. Great price.
Jeffrey Cordera (verified owner) –
The product works. I give 1 star is because of the terrible service. Told item in stock and should arrive within 5 days. Showed up 19 days later and was told that is because it was out of stock. This would have to be my last option before I ordered again.