What is the accuracy of powercrank measure? We declare measurement accuracy of +/- 2%. Tagged: accuracymeasurementpower measure Related Articles I have a POLAR V650 meter, will it work with POWERCRANK power meter? Will POWERCRANK work in a MTB bike? I have an oval shield. Will POWERCRANK show correct values? I have a disbalance between the right and left leg. Will POWERCRANK work properly? Do I need to install the magnet or cadence sensor on my bike when using the POWERCRANK? Is the device resistant to the conditions during training / competition?