Shimano STEPS BT-E8035 504Wh Down Tube Integrated eBike Battery (350mm)
IBTE8035E
SKU code: SHM-IBTE8035E
The Shimano STEPS BT-E8035 is a 504Wh down tube integrated battery engineered for full-suspension and hardtail eMTBs running the E8000 or E7000 STEPS drive system. With a 36V / 14Ah lithium-ion cell and a slimmer profile than its predecessor, it lets frame builders create lighter, more balanced eBike designs without sacrificing range — capable of exceeding 100km in real-world trail conditions.
Highlights
- 504Wh (36V / 14Ah) lithium-ion capacity for extended trail rides
- Fully integrated down tube mount — slimmer profile than the BT-E8020
- Supports on-bike charging or can be removed via key-lock mechanism for off-bike charging
- 1,000 charge-cycle lifespan, retaining at least 60% capacity thereafter
- Weighs 2.9kg
- Compatible with EC-E6000, EC-E6002, and EC-E8004 chargers
Integrated Design
The BT-E8035 is built to sit flush inside the down tube, protected by an outer cover that shields the battery from trail debris and water. A key-lock mechanism secures the battery in the frame, and the on/off switch is positioned on the top tube for easy reach while riding. The integrated form factor contributes to a lower centre of gravity and more natural ride feel compared to external battery solutions.
Long-Life Cells
Shimano's STEPS lithium-ion cells are rated for 1,000 charge cycles while retaining a minimum of 60% of original capacity — built to last the life of the bike. Charging to 80% takes approximately 2.5 hours; a full charge is reached in around 4–5 hours using a compatible charger (EC-E6000, EC-E6002, or EC-E8004).
Compatibility & Fit
The BT-E8035 is designed exclusively for frames with Shimano STEPS integrated down tube battery mounts. Compatible with first-generation STEPS drive units, including the DU-EP800, E8000, E7000, E6100, E5100 and E5000. It is not compatible with the second-generation EP801, EP600 or EP500, which run BT-EN batteries. Requires a compatible battery mount (BM-E8030-A, BM-E8030-B, BM-E8031-A, or BM-E8031-B). Always verify frame compatibility with your bike manufacturer before ordering.
Which battery, mount and charger go with which STEPS motor is set out in our Shimano STEPS battery and motor compatibility guide.
Shimano warrants this product against defects in materials and workmanship for 2 years from the date of original retail purchase. The battery capacity is guaranteed to retain at least 60% of its original capacity after 1,000 charge cycles. This warranty does not cover damage caused by improper use, installation, or modification. For warranty support, return the item to Tune Cycles.
- (350mm)
- 504Wh energy capacity (36V / 14Ah)
- Lithium-ion battery chemistry
- Down tube integrated mount design
- Key-lock removal system
- On-bike or off-bike charging via slim charging socket
- Charge time: ~2.5 hours to 80%, ~4–5 hours to 100%
- 1,000 charge-cycle rating (retains ≥60% capacity)
- Weight: 2.9kg
- Compatible chargers: EC-E6000, EC-E6002, EC-E8004
- Compatible mounts: BM-E8030-A, BM-E8030-B, BM-E8031-A, BM-E8031-B
| Spec | Value |
|---|---|
| Energy Capacity | 504Wh |
| Rated Voltage | 36V |
| Rated Capacity | 14Ah |
| Battery Type | Lithium-ion |
| Weight | 2,900g (2.9kg) |
| Charge Cycles | 1,000 (≥60% capacity retained) |
| Charge Time (80%) | Approx. 2.5 hours |
| Charge Time (100%) | Approx. 4–5 hours |
| Mount Type | Down tube integrated |
| Compatible Chargers | EC-E6000, EC-E6002, EC-E8004 |
| Compatible Mounts | BM-E8030-A, BM-E8030-B, BM-E8031-A, BM-E8031-B |
| Compatible Systems | Shimano STEPS first generation: EP800, E8000, E7000, E6100, E5100, E5000 (not EP801, EP600 or EP500) |
| Colour | Black (350mm) |
| SKU | SHM-IBTE8035E |
| Barcode # | 4550170762506 |
| Brand | Shimano |
| Shipping Weight | 3.2000kg |
| Shipping Width | 0.150m |
| Shipping Height | 0.120m |
| Shipping Length | 0.550m |
