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Generic · Internal Di2 battery
A compact internal power source for compatible EW-SD50 Shimano Di2 systems.
$249.99
PriceIn stock, ready to ship
This internal Li-Ion battery keeps your compatible Di2 power source protected and hidden inside the frame or seat post. At just 50 g, it provides the system connection, master-unit function and firmware-update support needed for compatible EW-SD50 setups.
Sold by Ashburton Cycles
Verified store
Price
$249.99
Type
Internal battery
Chemistry
Li-Ion
Rated voltage
7.4 V
The BT-DN110-A is a 50 g internal Di2 battery for compatible road and mountain bikes. Its cylindrical format can be installed inside a suitable frame or seat post, leaving the bike tidy while protecting the battery from everyday exposure. It uses one SD50 port and is intended for Shimano Di2 systems that use EW-SD50 wiring.
With a 7.4 V, 0.5 Ah Li-Ion cell, this battery supplies the power and system communication required by compatible Di2 components. It also acts as the Di2 master unit, supporting battery-level information and firmware updates through E-TUBE PROJECT. The battery is commonly specified for 11-speed R8000 and R9100 systems, but you should confirm that your existing setup uses EW-SD50 wiring before ordering.
Charging is handled through the compatible SM-BCR2 charger, connected via a junction [A] or system information display. Choose it as a replacement or upgrade for a compatible Di2 installation where a discreet internal battery, single-port connection and straightforward system integration are the priorities.
Best suited to a customer replacing or installing the internal battery in a compatible EW-SD50 Shimano Di2 road or mountain-bike system.
Internal installation
Fits inside compatible frames or seat posts for a clean, protected Di2 installation with no external battery visible.
EW-SD50 system connection
The single SD50 port integrates with compatible Shimano Di2 wiring and components.
Lightweight construction
At an average 50 g, it adds minimal weight to the bike.
Master-unit function
Supports Di2 system communication and battery-level information transmission as the system master unit.
Firmware-update support
Compatible system firmware can be updated through E-TUBE PROJECT.
SM-BCR2 charging
Charges with the compatible SM-BCR2 charger through a junction [A] or system information display.
Synchronized-shifting capability
The battery provides the processing support required for compatible Di2 Synchronized Shifting functions and custom shift patterns.
Compatibility check required
Confirm your bike uses Shimano EW-SD50 wiring; this battery is commonly listed for 11-speed R8000 and R9100 Di2 systems.
Every detail as listed by the manufacturer.
Generic is a catalogue designation for products presented without a distinct store-brand identity. The term describes the retail classification rather than a separate manufacturer history or geographic origin. Generic-labelled products can still have clearly defined specifications, standards and compatibility requirements. For this component, the catalogue designation is retained while the fitment details identify the relevant road bottom bracket application.
Generic · Internal Di2 battery
A compact internal power source for compatible EW-SD50 Shimano Di2 systems.
$249.99
In stockType
Internal battery
Chemistry
Li-Ion
Rated voltage
7.4 V
Rated capacity
0.5 Ah
This internal Li-Ion battery keeps your compatible Di2 power source protected and hidden inside the frame or seat post. At just 50 g, it provides the system connection, master-unit function and firmware-update support needed for compatible EW-SD50 setups.
The BT-DN110-A is a 50 g internal Di2 battery for compatible road and mountain bikes. Its cylindrical format can be installed inside a suitable frame or seat post, leaving the bike tidy while protecting the battery from everyday exposure. It uses one SD50 port and is intended for Shimano Di2 systems that use EW-SD50 wiring.
With a 7.4 V, 0.5 Ah Li-Ion cell, this battery supplies the power and system communication required by compatible Di2 components. It also acts as the Di2 master unit, supporting battery-level information and firmware updates through E-TUBE PROJECT. The battery is commonly specified for 11-speed R8000 and R9100 systems, but you should confirm that your existing setup uses EW-SD50 wiring before ordering.
Charging is handled through the compatible SM-BCR2 charger, connected via a junction [A] or system information display. Choose it as a replacement or upgrade for a compatible Di2 installation where a discreet internal battery, single-port connection and straightforward system integration are the priorities.
Best suited to a customer replacing or installing the internal battery in a compatible EW-SD50 Shimano Di2 road or mountain-bike system.
Internal installation
Fits inside compatible frames or seat posts for a clean, protected Di2 installation with no external battery visible.
EW-SD50 system connection
The single SD50 port integrates with compatible Shimano Di2 wiring and components.
Lightweight construction
At an average 50 g, it adds minimal weight to the bike.
Master-unit function
Supports Di2 system communication and battery-level information transmission as the system master unit.
Firmware-update support
Compatible system firmware can be updated through E-TUBE PROJECT.
SM-BCR2 charging
Charges with the compatible SM-BCR2 charger through a junction [A] or system information display.
Synchronized-shifting capability
The battery provides the processing support required for compatible Di2 Synchronized Shifting functions and custom shift patterns.
Compatibility check required
Confirm your bike uses Shimano EW-SD50 wiring; this battery is commonly listed for 11-speed R8000 and R9100 Di2 systems.