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John61, thanks for sharing your experiences. I generally only use the App to accurately determine battery life during a big ride. I'm taking it back to the bike shop, on their request, for a firmware update and full diagnostic... I'm of the option that its the battery management system, the...

It usually happens an hour or two after I've started riding and usually when I'm doing an uphill section following a downhill run. Rarely on the downhill run. As with you I did the 2mm spacer mod and it's been fine for the last few months. I've contacted the bike shop they want me to bring it in...

I have a trance E+one pro and have experienced multiple issues of turning off. I might well be the one Australian case mentioned by the Giant rep in Rob Gray's post above. In my case, Giant provided a new charger, asked that I dischange the battery to less then 4%...none of which worked. They...

Well after intsalling the 2mm shim to space up the battery connectors and a long period of faultless operation, the bike has started to occasionally turn itself off again. Anyone else found a solution to this very annoying problem? It still gives all the indications that its a battery...

Refer to this other thread on why I think the trance E+ can have a habit of turning itself off: https://electricbikereview.com/forums/threads/known-issues-problems-with-giant-products-help-solutions-fixes.13153/page-4#post-188690

Forgot to add, prior to inserting the 2mm shim I was having intermittent turning off issues.

I have inserted it 2 mm shim in mine and haven't had a problem since.

I have a Giant Trance e+1 and initially had a problem of if turning itself off and sometimes not being able to be turned on without first removing and re-inserting the battery. I have since found that the battery only just makes contact with the electrical contacts (only 1mm -2mm effective...

I have since found that the water is getting into the handlebar controller (Ride Control One). I immersed the controller in some hot water (65 deg C) which causes the air inside to expand, I could then see air bubbles escaping at the electrical power cable (refer video...

After three days in the garage, the problem has disappeard. On advice from Giant, my dealer requested I bring the bike in for a check (they were going to check the controller), however, now that it is working again, they say its pretty hard to fault find so they have recommended I only bring it...

I have a Giant Trance e+1, and its doing the same thing. Turns on when I plug in the battery, sometimes all of the lights on the Ride Control are illuminated and in this state the bike will not operate. Other times the ride control operates as normal and so does the bike, however when I try...

Inserting a shim, that's interesting I'll be interesting to see if it solve the problem. I got my bike back a couple of days ago with a new motor (for an unrelated problem ) the original battery is fitted. I've only been on one ride so far and it's ok, but the ride was not very long, will keep...

Very odd considering the diagnostic checked out ok, and I assume your software was up to date. Might check mine out...

I have the same bike a you and have noticed a drop in power as the cadence increases...I assume because I was hitting the 110-120 range. From my experience with gym bikes, which tell you what cadence you are doing, it seemed about right. How are you measuring your cadence? Do you think the...

For those interested, I have calculated, plotted and overlayed the indicative power curve for the Yamaha PW-X, this motor is significantly be better than the PW motor. The curve should also be comparative to the Giant SyncDrive Pro (with possibly slightly better figures).

RonRonMTB, I have the same bike as you and have the same motor cutting out issue. Like you I found that once it starts occurring, it becomes more frequent and in my case, it eventually fails to turn on at all. Also like you, I found that if I removed and reinstall the battery it it either does...