Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

I have the 7800 wired Dura-Ace which is over 4 years old and still runs perfectly with the original battery instaled in the factory. Never missed a beat although I plan to get it serviced soon, actually I have been saying that for a couple of years now.

A friend of mine was less than impressed with the wireless version after coming from a wired unit, to me at least the reliability and less iffy set up of the wired trumps the looks of the wireless and my bike is no beauty queen anyway.

They're way more expensive (I've got two wired SRM crankets and a PCV for <£700 vs. £1200+ for one wireless without headunit) and I just want to test the SRM to see if it's worth using one so I was trying to keep costs down.

Chatting to one of the guy's Scherrit put up for the Track Masters he reckons the wired ones are more accurate (no dropouts, better for sprinters looking for peaks, not me so much obv.) and understandably don't need sending off for battery replacement so often. If I can get mine to work I might DIY the battery swapping. Can't believe they make you send 'em off every couple of years. Gits.