Hey crew! 🚴♂️ Today we’re testing the Magene PES P505 Base, a dual-leg, spider-based power meter that undercuts the big names on price but still promises ±1.5% accuracy, ANT+/BLE connectivity, and 200 h of battery life. Let’s see how it stacks up.
Magene PES P505 Base Power Meter Review
Quick Take
The Magene PES P505 Base is a surprisingly capable and budget-friendly dual-sided crank power meter. It offers ±1.5% accuracy, ANT+/Bluetooth connectivity, and up to 200 hours of battery life . Available in crankarm lengths 165–175 mm, it fits standard 24 mm Shimano Hollowtech bottom brackets. Priced around ** MSRP $299**, this spider-based meter excels for road, gravel, or indoor training—though it’s incompatible with press-fit BB386 or T47 frames without external adapters.
💡 Tip: Purchase via AliExpress during Choice Days or promotions to save up to €120, bringing the price down to €180–200. At this price, it’s arguably the best-value dual-sided power meter available.
Build, Design & Installation
-
Spider & Crankarms: 4-arm 110 BCD spider with proprietary chainrings and 24 mm steel spindle (Shimano-compatible). Hollow-crank design reduces weight (~650 g without rings, ~782 g with 52/36 rings).
-
Weight Comparison: Same weight as Shimano Dura-Ace R9200 crankset (~678 g).
-
Compatibility Note: Not compatible with BB386 or T47 frames without external BB cups
Charging port on the left crank arm requires removal for USB charging
Accuracy & Data Performance
-
Claimed Accuracy: ±1.5%. Real-world tests showed ~1% variance vs. Favero Assioma and smart trainers.
-
Metrics: Power, cadence, left/right balance, and pedal smoothness.
-
Calibration: Easy via Magene Utility app or backpedaling. Auto-zeroes on warm-up.
Connectivity & App Support
-
Wireless: ANT+ (power only) and Bluetooth LE (power). Can pair to one Bluetooth device at a time.
-
Apps: Magene Utility (firmware/calibration) and OnelapFit (training/data syncing to Strava/TP).
-
Compatibility: Works flawlessly with Wahoo, Garmin, Zwift, and TrainerRoad.
Road, Gravel & Indoor Use
-
Versatility: Ideal for road, gravel, and indoor trainers (ANT+ FE-C/Bluetooth). IPX7 waterproof.
-
Indoor Advantage: Consistent power tracking across indoor/outdoor rides.
sweet / sour – Conclusion
🥭 sweet
-
Outstanding value: Dual-sided power with crankarms from €180–200 – unbeatable in the budget segment.
-
Reliable performance: ±1.5% accuracy (in practice even better), stable ANT+/BLE connection, solid app support.
-
Versatile use: Great for road, gravel, and indoor training. Lightweight, waterproof, and well-built.
🍋 sour
-
Limited compatibility: Not natively compatible with BB386 or T47 frames without adapters.
-
Bluetooth limitation: Can only connect to one BLE device at a time.
-
Fixed crank length: Crank length cannot be changed after purchase – no modular setup.
Pro Tip:
The next-generation Magene PES P515 power meter is now available! Key upgrades over the P505 include:
-
Higher accuracy (±1% claimed)
-
Native BB386 & T47 bottom bracket compatibility
-
Retains all P505 features (dual-sided power, 200h battery, ANT+/BLE)
Category Ratings
| Category | Score |
|---|---|
| Design | /10 |
| Geometry | /10 |
| Value | /10 |
| Overall | NaN/10 |
Final Score: ★★★★☆ (4.7/5)
Overall, the Magene PES P505 Base is an enthusiast's dream power meter for the price. It packs long battery life, dual-leg precision, and broad compatibility into a lightweight crankset. If you have a compatible frame, we highly recommend it for road, gravel, or trainer use. It's rare to find this level of accuracy and completeness at such a low cost – Magene has a winner here.
Sources:
magene.com, gplama.com, the5krunner.com, zwiftinsider.com, 4iiii.com, and real-world user feedback.
Disclosure: We purchased the Magene P505 power meter ourselves for this review and were not compensated by the manufacturer. Our testing and opinions are completely independent.
