M2S All Terrain 750 Cold Weather Issue

tommyc803

New Member
I bought an M2S all terrain 750 to get me places for bow hunting. I live in Wisconsin. The bike works great if I keep it in the house at 70 degrees, it gets me to where I need to go. Usually I hunt a couple of hours and leave the bike secured to a tree. Everytime I go to leave and the temp is below 45 degrees the display and lights power on but when I use pedal assist or throttle only the rear hub gets power for 1/16 of a second and stops, I'm forced to ride it home the old fashion way. As soon as I bring it in to warm up it works fine. Battery is always charged as well. I'm leaning towards the controller or rear hub motor as obviously having an issue with below 45 degrees. Anybody have a solution? I haven't received an answer from M2S to remedy the issue. I have a total of 40 miles on the bike. Half of which have been human power only. Please let me know if you have a solution, as I don't know what I can do.

Thanks,

Tom C
 

AHicks

Well-Known Member
Tom, I can share that as the temps drop, the battery's ability to generate power drops off as well. When the bike drops off line like you are describing, there's a pretty good chance it's doing that purposely to protect components from low voltage.

To make the best of a bad situation, you might see if there's a way to lighten the electrical load on your return trip. An example may be to get the bike moving by pedaling, than asking for a little help in PAS 1? Avoid asking it to climb out of a gully at a relatively high power setting.

Is there a way you could keep the battery warm after parking the bike? Packing the battery in with you and sitting on it maybe? -Al
 

tommyc803

New Member
Thanks for the reply Al. I will try experimenting by duct taping disposable hand warmers. I wonder why nobody else is having the same problem though? I always try to get going downhill first but that doesn't help either. I drained the battery according to the manufacturer recommended procedure when I first received the bike in 2018 and have kept topping it off after every ride. Thanks again for taking the time with a suggestion, I appreciate it.
 

rich c

Well-Known Member
Thanks for the reply Al. I will try experimenting by duct taping disposable hand warmers. I wonder why nobody else is having the same problem though? I always try to get going downhill first but that doesn't help either. I drained the battery according to the manufacturer recommended procedure when I first received the bike in 2018 and have kept topping it off after every ride. Thanks again for taking the time with a suggestion, I appreciate it.
Draining a battery can be harmful, no matter what the manufacturers recommendation. Optimum is between 20-80%. There should never be a need to top it off every time unless you really need the range. To go the 40 miles you say, you should have only needed to charge it once. Twice at the most. I’d suggest you go really easy on the battery going to the deer stand. Then take the battery with you and tuck it in your coat. Even just putting it in your coat for the last hour before leaving will help. I’d be shocked if the problem was anything but the battery.