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Shimano Di2 BT-DN110-A built-in battery, for EWSD50

129 
RRP 169 
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Delivery method on Thursday 11.06.2026
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Shimano Di2 BT-DN110-A built-in battery

The BT-DN110 lithium-ion battery can be mounted indoors or outdoors. Internal assembly takes place in the head tube or in the seat post.
Product features
For outer mounting, the battery holder SM-BTC1 is required
Battery provides long service life and high performance (up to 2,000 km with one charge)
Bluetooth technology allows riders and mechanics to wirelessly communicate with the EW-WU101 unit or the SC-MT800 display using a computer, tablet or smartphone to make small workshop adjustments or gear adjustments
Product details
Battery capacity 500 mAh
Length 160 mm
Diameter Ø - 17 mm
Weight 129 g (total package weight)
product ID 140916
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Small, light, lasts a long time

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Product questions
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Hello!
I want to order this battery, it fits my bike. But I had a negative experience: I bought the same battery in a physical store, it was manufactured on 12/2021 and it was completely dead.
So before buying here can you please clarify when it was made and does this battery have a certain percentage of charge by default?
(also I read that if it goes really low, it cannot be charged again)

I will be really grateful for your response!!

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Hello,

unfortunately, the battery is currently available only for a direct order from the warehouse of our supplier, so right now it"s not possible for us to check physically the manufacturer"s year by ourselves. However, according to the manufacturer"s item ID (EAN code), batteries come from the actual stock - they should have a full capacity.

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SK Dobry den,

Chcel by som sa vas prosim opytat, ci by mi dana bateria mohla sediet na moj bicykel. Mam elektricku sadu Dura Ace na bicykli, ktory bol osadeny priblizne v roku 2016-2017 touto sadou. Ma zabudovanu bateriu v sedlovke.

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SK Dobrý deň,

Táto batéria bude sedieť. Je kompatibilná ako so sadou R9100 ktorá vyšla v r. 2016 tak aj staršou R9000.

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SK Dobrý deň, chcem sa spýtať, či bude ešte táto konkrétna batéria perspektívne dostupná a ak áno,približne kolko by to mohlo trvať?

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SK Dobrý deň,

Baterka by mala byť ešte dostupná ale momentálne je vypredaná aj v EU sklade Shimana a nie je známy termín naskladnenia.

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Hello guys, I would like a stronger flashlight or this additional one for the theos i50, is there any possibility? thanks for the reply.

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SK Dobry den,

v tomto pripade sa jedna o bateriu pre Di2 system, nie pre samotny elektromotor bicykla.

Range extender Kellys zial pre svoje bajky v ponuke nema

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OK, yes, and shouldn't I have something stronger? theos i50.

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SK Dobry den,

zial nie, aktualne baterie s vacsou kapacitou pre Vas model dostupne u vyrobcu nie su.

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WARNING
For installation, adjustment and replacement information that is not found in the user's manual, please consult the place of purchase or a distributor. A dealer's manual for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to read this "user's manual" thoroughly before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions must always be followed in order to prevent personal injury and physical damage to equipment and the surroundings. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and the surroundings.

DANGER
- Use the specified charger to charge the battery. Using any other device may lead to fire, overheating, or leaks.
- Use a USB port power adapter with a voltage of 5.0 V DC and a current value of at least 1.0 A DC. If you use an adapter with a current value of less than 1.0 A, the power adapter may heat up and cause fire, smoking, heating, damage, electric shock or burns.
- Do not heat the battery or throw it into a fire. Failure to do so may result in fire or bursting.
- Do not use or leave the battery in hot or humid places where the battery may be exposed to direct sunlight, in a closed vehicle on a hot day, or near a heater. Failure to do so may result in leakage, overheating or bursting, resulting in fire, burns or other injuries.
- Do not disassemble or modify the battery; also, do not apply solder directly to the battery terminals. Failure to do so may result in leakage, overheating or bursting, resulting in fire, burns or other injuries.- Do not connect the (+) and (-) terminals with metal objects. Do not carry or store the battery together with metal objects such as chains or hairpins. Failure to do so may result in short circuits, overheating, burns or other injuries.
- If liquid leaking from the battery gets into your eyes, immediately flush the affected area with water without rubbing your eyes and then seek medical attention. Failure to do so may result in blindness.

WARNING
- If the battery does not fully charge after 4 hours of charging, stop charging.
- Do not immerse the battery in fresh or salt water and prevent the battery terminals from getting wet. Failure to do so may result in fire, bursting or overheating.
- The operating temperature ranges for the battery are shown below. Do not use the battery at temperatures outside these ranges. If the battery is used or stored at temperatures outside these ranges, it may cause fire, injury or problems during operation.
1. During discharge: -10 °C - 50 °C
2. During charging: 0 °C - 45 °C
- Do not use the battery if it shows obvious scratches or other external damage. Failure to do so may result in bursting or overheating or problems during operation.
- Do not subject the battery to strong impacts or throw it. Failure to do so may result in bursting or overheating or problems during operation.
- Do not use the battery if it shows leakage, discoloration, deformation or other unusual signs. Failure to do so may result in bursting or overheating or problems during operation.
- If leaking liquid gets on your skin or clothing, wash it off immediately with clean water. Leaked liquid can damage the skin.
- After thoroughly reading the operating instructions, store this manual in a safe place for possible future use.

CAUTION
- Store the battery in a safe place out of the reach of children and animals.

Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.

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