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Voltage and current are inversely proportional. Assuming resistance (load) is constant, as voltage rises, current lowers; the opposite is also true.

pressure gauge... | Answered on Sep 27, 2013


plus 17 and you get 85 use all the uneven numbers

pressure gauge... | Answered on Sep 06, 2013


there is a little switch looking thing that has to be lifted up from the pump then insert the valve into the bike pump and then puch the switch/lever back down and start pumping then to take off lift lever and quickly take pump off valve otherwise you will lose air you just put into tire

Zefal Bicycle... | Answered on Mar 15, 2013


After a call to the customer service people who were more confused than I was, I figured out how to mount the bracket to the handle bar. Believe it or not the Zefal guys did not have an instruction manual on the product they sell. So here is how it works... You have to run the hard plastic strap around the handle bar and push it into a gap between the plastic nut . It's such a small gap that you will have award time finding it. Once you tighten the plastic nut the strap will advance slowly until the end will come appear on the other side. That's all there is to it. Now why the heck could they not put a picture of this on the box? Perhaps job security for the Zefal guys?

Zefal Cycling | Answered on Jul 24, 2012


Linda, I was having problems with the installation also, but my husband finally figured it out. Just start the end of the strap at the screw, as you tighten the screw with the Allen wrench it will thread the end thru and will get tighter around the post of the bike. It works perfectly and now I can use the GPS on my iPhone to record my rides. Hope this helps!

Zefal Cycling | Answered on Jun 15, 2012


You can charge each 12V battery with a standard charger. Just attach the leads directly to the batteries.

Zefal Bicycle... | Answered on Jan 11, 2012

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