The Shimano STEPS BT-EN806 is a 630 Wh lithium-ion battery engineered for e-mountain bikes and e-road bikes that demand long range and a clean, frame-integrated look. Its slim, flat profile tucks neatly into dedicated downtube or seattube battery cavities, keeping the centre of gravity low and the silhouette natural — delivering serious range without compromising handling or aesthetics.

Highlights

• 630 Wh capacity (36 V / 17.5 Ah): Substantial range for demanding trail rides, long commutes, and loaded touring.
• Integrated frame mounting: Designed for second-generation Shimano STEPS integrated battery mounts — downtube and seattube positions supported.
• Low centre of gravity: Compact, flat form factor keeps mass close to the frame's centreline for natural, balanced handling.
• IPX5 water resistance: Handles rain, trail spray, and low-pressure post-ride washdowns without issue.
• Fast charging: Charges fully in approximately 6 hours with the EC-E8004 charger.
• Long cycle life: Retains more than 60% of initial capacity after 1,000 full charge cycles.
• Built-in indicators: On/off switch, charge level indicator, and error signal function for easy monitoring and diagnostics.

Battery Technology

Operating at 36 V with a 17.5 Ah lithium-ion cell pack, the BT-EN806 delivers 630 Wh of usable energy in a package purpose-built for Shimano's second-generation STEPS integrated battery platform. The flat form factor was designed in close collaboration with frame manufacturers to allow slimmer, more natural-looking e-bike frames. The battery charges safely between 0 °C and 40 °C and operates across a range of −10 °C to 50 °C, covering the full spread of Australian riding seasons.

Durability & Longevity

Shimano rates the BT-EN806 to retain more than 60% of its original maximum capacity after 1,000 full charge cycles — representing years of regular riding before any meaningful performance decline. IPX5 certification ensures it handles everyday exposure to rain and spray. An integrated error signal function alerts the rider or service technician to any fault condition, streamlining diagnostics.

Compatibility & Fit

The BT-EN806 is compatible with the Shimano STEPS DU-EP801 and DU-EP600 drive units. It requires a second-generation Shimano STEPS integrated battery mount — compatible brackets include BM-EN800-A, BM-EN800-B, BM-EN801-A, and BM-EN801-B. Recommended chargers are the EC-E6002 and EC-E8004. Compatible with charging adapters SM-BTE80 and EW-CP100. Frame compatibility must be confirmed with the bike manufacturer before purchase — this battery is supplied as a replacement or upgrade unit.