# Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 Ultegra R8150 Systems Compatible SD300 Wires

Shimano Di2 Batteries. Must purchase battery charger and power cable to complete the system.-   All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
-   Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/

## Details

- **Price:** 220.0 USD
- **Vendor:** Gio's Outdoors
- **Type:** Shifter Battery
- **Tags:** Gio's Outdoors, Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 220.00 USD | In stock |

## Images

- Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 Ultegra R8150 Systems Compatible SD300 Wires

---

> Source: [Smart supply deals](https://smartsupplydeals.com/products/shimano-bt-dn300-built-in-di2-battery-for-dura-ace-9250-ultegra-r8150-systems-compatible-sd300-wires)
> Updated: 2026-07-22