Shimano STEPS BT-E8020 Integrated Down Tube Battery 504Wh
SKU code: SHM-IBTE8020H
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The Shimano STEPS BT-E8020 is a frame-integrated 504Wh lithium-ion battery built for serious e-MTB riding. Designed to sit flush inside the down tube of compatible STEPS-equipped frames, it delivers a claimed range of up to 100 km in normal assist mode — all while keeping a clean, trail-ready silhouette. This first-generation integrated battery pairs with the E8000 and E7000 STEPS drive systems, making it an ideal upgrade or replacement for high-demand off-road riders.
Highlights
- 504Wh capacity: 36V / 14Ah cell delivers up to 100 km of assisted range under typical e-MTB conditions.
- Frame-integrated design: Mounts flush inside the down tube for a low-profile, balanced look and improved weight distribution.
- Impact and vibration resistant: Built tough for the rigours of trail and enduro riding across rough terrain.
- Waterproof construction: Sealed battery and holder interface stands up to wet-weather riding and stream crossings.
- Long service life: Shimano guarantees more than 60% remaining capacity after 1,000 charge cycles.
- Integrated charge indicator: On-board LED display with charge level readout, error signal, and on/off switch.
- Keylock security: Integrated keylock for secure removal and peace of mind when leaving the bike unattended.
- Di2 compatible: Powers the STEPS motor system as well as Di2 electronic shifting when paired with a compatible setup.
Battery Performance
With a 504Wh energy store, the BT-E8020 provides extended range for all-day trail sessions without the anxiety of running flat mid-ride. Charging to 80% takes approximately 2.5 hours using a compatible 4A Shimano charger; a full charge completes in around 5 hours. Even after the motor-assist reserve is exhausted, the battery continues to power the display and any connected lights.
Longevity & Care
Shimano's lithium-ion cell engineering ensures the BT-E8020 retains more than 60% of its original capacity after 1,000 full charge cycles — a benchmark that reflects genuine long-term value. For best results, store the battery at 10–20°C, maintain a charge level of around 70% during extended periods off the bike, and recharge every six months during storage.
Compatibility & Fit
The BT-E8020 is designed for Shimano STEPS E8000 and E7000 series e-MTB systems. It uses a side-mounted removal mechanism and integrates into frames built to accept the 1st-generation Shimano integrated battery standard. Confirm frame compatibility with your bike manufacturer before purchasing — not all STEPS-compatible frames accept the integrated battery format.
- 504Wh (36V / 14Ah) capacity for up to 100 km range per charge
- Frame-integrated down tube design for a clean, balanced build
- Waterproof and sealed battery holder interface
- Impact and vibration resistant for aggressive trail use
- 60%+ capacity retained after 1,000 charge cycles
- Charges to 80% in ~2.5 hours with 4A Shimano charger; full charge ~5 hours
- Integrated LED charge indicator with on/off switch and error signal
- Keylock security for safe battery removal
- Compatible with Shimano STEPS E8000 and E7000 e-MTB systems
- Continues to power display and lights after motor assist depletes
| Part Number | BT-E8020 |
| Capacity | 504 Wh (36V / 14Ah) |
| Battery Type | Lithium-ion |
| Mount Type | Frame-integrated down tube |
| Weight | Approx. 2,915 g |
| Dimensions (L × W × D) | 375 × 86 × 92 mm |
| Charge Time (full) | Approx. 5 hours |
| Charge Time (to 80%) | Approx. 2.5 hours (4A charger) |
| Cycle Life | >60% capacity after 1,000 cycles |
| Claimed Range | Up to 100 km (e-MTB normal mode) |
| Colour | Black |
| Compatible Systems | Shimano STEPS E8000, E7000 |
| Generation | 1st Generation Integrated Standard |
| SKU | SHM-IBTE8020H |
| Barcode # | 4550170762520 |
| Brand | Shimano |
