The INPEAK Shimano 105 R7100 Powercrank-E - Single is a single-sided power meter with a rechargeable battery, built into a Shimano 105 crank for accurate and consistent training data. It measures power, cadence and advanced cycling metrics with ±2% accuracy, using ANT+ and Bluetooth for stable connectivity. The sealed IP67 housing and automatic temperature compensation ensure reliable data in all riding conditions.Key Features and Benefits:Rechargeable Li-Po battery system: A built-in 110 mAh battery removes the need for disposable cells. You recharge it using a magnetic USB cable, which keeps setup simple and reduces ongoing costs while ensuring consistent power supply for long training periods.Single-sided power measurement integration: The power meter is fitted directly into the Shimano 105 FC-R7100 crank arm. This provides a clean and secure setup that measures left-leg output and calculates total power, giving you reliable data without complex installation.±2% measurement accuracy: The system delivers precise power readings across a wide 20-2000 W range. This level of accuracy supports structured training, helping you track performance changes and maintain consistent effort zones.Automatic temperature compensation (ATC): The system adjusts readings between -5°C and +50°C. This keeps power data stable regardless of weather changes, so you can rely on consistent metrics throughout the year.ANT+ and Bluetooth connectivity: Dual transmission protocols allow seamless pairing with head units, training apps and indoor platforms. This ensures stable data transfer and compatibility with a wide range of devices.Advanced cycling dynamics (TWiN2): Metrics such as torque effectiveness, pedal smoothness and left/right balance provide deeper insight into pedalling efficiency. This helps you refine technique and improve power delivery.IP67 waterproof and durable housing: The sealed casing protects internal components from water and dust. This ensures long-term durability and consistent performance in wet and demanding conditions.Long battery life and smart power modes: Up to 90 hours of active use, with auto sleep and wake functions. This reduces the need for frequent charging and keeps the unit ready for regular training sessions.Consistent and accurate power data allows you to train with clear targets and measure progress over time. The combination of precise measurement, stable connectivity and detailed cycling metrics supports structured training and performance analysis. With automatic calibration and temperature control, the system maintains reliability without constant adjustment, helping you focus on improving output and efficiency.Choose a power meter that delivers accurate data, simple charging and dependable performance in all conditions. This setup gives you the tools to train with structure and track results with confidence.Specification:Measurement precision: ± 2% Power measurement range: 20-2000 W Cadence range: 20-200 rpm Weight: 10 g (INPEAK device) Case tightness: IP67 Manual zero-offset calibration: Yes Temperature compensation: Yes Gyroscope + Accelerometer: Yes Torque Effectiveness: Yes Pedal Smoothness: Yes Cycling Dynamics: Yes (TWiN2) Balance L/R: Yes (TWiN2) Operating temperature: from -5°C to +50°C Storage temperature: from -20°C to +50°C Battery specificationsBattery type: Li-Po, rechargeableBattery capacity: 110 mAh Battery autonomy in use: max. 90 hours Battery autonomy in sleep: max. 6 months Battery autonomy in ShipMode: max. 24 months Charging time (0% -> 100%): 2 hours Low battery notification: Yes Battery charging temperature: from +5°C to +40°C Battery lifetime: Less than 20% capacity loss after 300 full cycles. Approximately 6 year lifetime. Required charger: 5VDC, 1000mA (not included)Software specifications Software update from INPEAK MANAGER App: Yes Modification of “Scale Factor”: Yes Zwift Compatible Mode: Yes ANT+ Compatibility: Yes Bluetooth Low Energy Compatibility: Yes Auto sleep: Yes Auto wake-up: Yes Package contentsCrank with integrated power meter USB charging cableBrief instruction manual Sticker setDevice data card