Function/FeaturePowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Copyright DC Rainmaker - Updated January 27th, 2018 @ 4:29 am
Price$599 (no wheel)$799 (no wheel)$1499$2295 (pedals only)$729 (no cranks)/$749 (cranks)$1299 (R with cranks, no chainrings)/$1399 (RS)$1099 (with cranks, no chainrings)$529 (left crank arm only)
Available todayYesDiscontinuedYesYesYesYesYesYes
Measurement TypeDirect ForceDirect ForceDirect ForceDirect ForceDirect ForceDirect ForceDirect ForceDirect Force
Attachment areaRear Wheel HubRear Wheel HubPedalsPedalsCrank SpiderCrank SpiderCrank SpiderLeft Crank
Attachment limitationsN/AN/ALook Keo Compatible pedals onlyLook Keo Pedals OnlySpecific supported cranksSpecific supported cranksSpecific supported cranksSpecific supported cranks
Weight (additional/net)315g/325g (full hub)446g (full hub)175g per pedal (inclusive)24gFrom 189g + crankElsa R: 576g/Elsa RS: 616g (including cranks)From 659g (including cranks)20g
Wireless Connectivity TypeANT+/Bluetooth Smart (depends on cap)ANT+ANT+Polar W.I.N.D.ANT+ANT+ANT+ANT+ & Bluetooth Smart
Unit auto-turns on when on bikeYesYesYesNoYesYesYesYes
BatteryPowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Battery Life300 hours400 Hours175 hours465 hours300-400 hours300 hours300 hours200 hours
User or Factory battery replacementUserUserUserUserUserUserUserUser
Battery typeCR20322 x EPX76CR20322 x CR2354CR2450CR2032CR2032CR2032
Low Battery WarningYesYesYes, 20 hoursYesYesYesYesYes
FeaturesPowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Measures/Transmits CadenceYes (Estimated)Yes (Estimated)YesYesYesYesYesYes
Ability to update firmwareYesYesYesNoFactory OnlyQalvin App & USB ANT+ StickQalvin App & USB ANT+ StickYes
Transmits Left/Right Power Balance (Estimated)NoNoN/AN/AYesYesYesNo
Transmits Left/Right Power Balance (Measured)NoNoYesYesNoNoNoNo
Transmits Pedal SmoothnessNoNoPlannedNoNoNoNoNo
AccuracyPowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Measures all power outputYesYesYesYesYesYesYesNo
Claimed Accuracy Level+/- 1.5%+/- 1.5%+/- 1.5%+/- 2%+/- 2%+/- 1.5%+/- 1.5%+/- 2% (of left leg)
Includes temperature compensationYesYesYesYesYesDone at factoryDone at factoryYes
Supports auto-zero functionYesCan configure only on CycleOps UnitsYesNoYesYesYesNo
Supports manual calibrationYesYesYesNoYesYesYesYes
Supports hanging weights (static test)YesYesYesNoYesYesYesNo
SoftwarePowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Phone App to Configure/TestNoNoDesktop App (PC/Mac)NoNoYesYesYes
PurchasePowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Amazon LinkLinkLinkLinkLinkN/ALinkLinkN/A
Clever Training - Save with the VIP programLinkLinkLinkLinkN/ALinkLinkLink
Clever Training Europe (Save 10% with DCR10BTF)Link
DCRainmakerPowerTap G3 HubPowerTap Pro (Discontinued)Garmin VectorPolar/Look Keo PowerPower2Max (Oct 12+)Quarq Elsa R/RSQuarq Riken RStages Power Meter
Review LinkLinkLinkLinkLinkLinkLinkLinkLink