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ShimanoBT-DN110 Di2 Battery

Sale 25% Off$120.11 $159.99

Item # SHI00CM

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Item # SHI00CM

BT-DN110 Di2 Battery

Refresh your Di2 shifting system with the Shimano BT-DN110 Di2 Battery. Designed to fit stealthily in seat posts and other internal mounts, this battery is compatible with Shimano's E-Tube technology to drive precise shifts no matter the conditions.

  • A hidden battery option for Di2 drivetrains
  • Tucks neatly inside your seatpost to preserve frame lines
  • Compatible with Shimano's industry-leading E-Tube technology
Tech SpecsWeight
Tech Specs
Shimano Di2
Recommended Use
cycling, mountain bike
Manufacturer Warranty
2 years

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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One Color, One Size

Claimed Weight

Claimed weights are provided by the vendor.

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I have a 4 year old Trek Domane that came with Di2 with the older model number battery in the seat tube. Will this new model fit into the same battery holder that Trek used at the factory? My current battery is starting to require more frequent charging due to age, I guess.

Hey Franz,

The different generations of internal batteries for Shimano Di2 are the same diameter so you should be good with the battery holder you currently have. If you need any more assistance on this or anything else though please reach out to me!

It doesn'' T work

    I bought the battery 3 months ago and after a vacation in December, when I used it again the battery was dead, it does not charge, it does not do anything. Try with a friend's battery and everything works perfectly. Shimano has serious problems with the di2 battery, I'm thinking about switching to Sram Etap.


    • Familiarity: I've used it several times

    For how much I rode my mtb, this battery last FOREVER. I of course have no similar products to compare it to but I like this battery!

    Is there a difference between BT-DN110-1 , -2, -3. I purchased this battery as an upgrade and asked my LBS to do the install. I picked the bike up and have been riding it for a couple of months with no issues. Yesterday I connected the eTube project and saw that the old battery was still in the bike. Fortunately the LBS gave me back the old battery which I kept. I checked this and found this to be the BT-DN110. Is there any specific size requirements. The box indicates BT-DN110-1

    Hi Glenn,

    No difference, just different markings. This is from the Shimano site:

    Type1: w/ recycle mark Type2: w/o recycle mark Type3: for Korean market

    Shipped dead battery

      Can’t believe you would ship out a USED dead battery!

      When the box came it looked like this was a return, I just got a call from my LBS telling me the battery has 0 charge! How disappointing- guess I won’t be riding my bike this weekend

      Expect better service then this!

      great life

      • Familiarity: I've put it through the wringer

      I've just come to decide that Di2 is the way to go. With that you have to have the battery of course and it's the only option. Luckily they are great, they charge quick, hold for a long time, easy to use.

      Syncro shift is the shiz-nits, for real!

      • Familiarity: I've put it through the wringer

      Set this up on my cross bike that is usually a 1x system with TRP Hylex brakes and a single climbing-shifter button setup on the right lever. I put a front derailleur on with road rings to ride through the winter while my road bike lives on the trainer and programmed the one shifter to use the syncro-shift option to automatically shift the front derailleur at specified points and its freaking nirvana.

      Get's the job done

        For anyone who hasn't tried it, Di2 is life changing. It makes shifting perfect even when you're under heavy load and really shouldn't be doing it. Obviously the battery is a critical component of Di2 and I've found that it holds charge very well, going dozens of hours of riding between charges.

        small and light

        • Familiarity: I've used it several times

        this thing is about the size of two ballpoint pens, smaller than I expected. works great. I shift a ton, so charge around every 750 miles.

        Isn't technology great!

        • Familiarity: I've put it through the wringer

        I remember the Niterider batteries that weighed 2 tons and took up a whole bottle cage... This thing is far more compact and powerful.


        • Familiarity: I've put it through the wringer

        Have had multiple Di2 bikes and the new internal battery has been flawless. No issues to report and easy to use and install. My only minor issue I raise would be an internal mechanism that would a universal support/attach and dampen the unit in the frame. A good shop mechanic can work around this though.

        Invisible Power!

        • Familiarity: I've used it once or twice and have initial impressions

        Just had this battery installed on my bike, and I love that it is tucked neatly into the seat post! From everything I've read and word of mouth from other users this thing is rad!!! Long and reliable battery life. Can't wait to put it through its paces!

        Robot Bike

        • Familiarity: I've put it through the wringer

        Whiiiiiiir Zip Beep Boop Beep

        It occurred to me how crazy Di2 is, as I was running a firmware update on my bicycle. When Skynet takes over we Electronic Shifting cyclists are in trouble.

        All Jokes aside though. 1600 miles on this drivetrain and not a single issue or adjustment needed. Every shift has been flawless, and barring any unforseen circumstances, like a crash or some good old fashioned garage or transportation mishap, I fully expect go 6000+ miles with no issues. The only drawback I can find, and this is totally a personal preference, but I sort of miss the mechanical drivetrain for no reason other than the simplicity of pushing a lever which pulls a cable which moves a derailleur. I would argue that the Di2 lacks tactile feedback when shifting, but that is just me nitpicking. I rode the battery until it completely died just to see what would happen. At about 1300 miles (this includes plenty of playing with the new group, shifting just to hear the sounds and show off the auto trim) The battery died on my 18 mile commute to work one morning, first the front derailleur refused to shift, after a few more shift button clicks it did shift down into the small ring, and I had about 30+ shifts of the rear derailleur before the system became unresponsive. So 1300 miles, I think it is safe to say a rider would need to be quite negligent to run out of power on accident.

        How does this battery compare with the previous version of the internal Di2 battery (i.e., the SM-BTR2)? Specifically: 1) is it electronically compatible with the Shimano 9070 groupset; and 2) does it have the same external dimensions such that it is compatible with a seat post battery holder that already works with the SM-BTR2?

        1) Yes, it is fully compatible with 9070 and 6870 groupsets. It adds synchronized shifting capabilities, which the BTR2 does not allow.

        2) Yes