changeissimple
100 W
- Joined
- Oct 18, 2017
- Messages
- 104
I went out for a ride yesterday on my e-moped that has a QS205, SVMC72150 & a 72v 70amp 18650 battery. Beautiful fall day here, leaves were rustling under my tires. Everything was going great, hitting 45mph, but was just on some back roads and cruising between 20-35mph mostly, and on and off the throttle. Then the throttle started to show voltage dropping super quickly, all the way down to nothing and powered the whole system down. I couldn't get it going. Luckily was with a friend who got his jeep and we took it home. This is the second throttle to have this same "plummeting voltage" symptom. As soon as i got a new throttle, it was fine the last time, I thought, maybe it was that throttle was junk. But now I know there is something else going on that is causing it. I do have a small 10 amp fuse between the battery + and the power key switch wire on the throttle.
Also, when I got off the bike after it stopped, the motor was cool, the controller was cold, the battery was slightly warm to the touch. The battery charged right back up to 84v.
This is the throttle im using https://www.aliexpress.com/item/DC-12V-24V-36V-48V-60V-72V-Electric-Scooter-Twist-Throttle-3-Wire-Speed-Control-Power/32822899317.html?src=google&albslr=226930569&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&ds_rl=1258652&albcp=1581905725&albag=59263823906&trgt=349615372042&crea=en32822899317&netw=g&device=c&gclid=EAIaIQobChMIqpiXiuCX3gIVjEoNCh14cQIgEAQYAiABEgJBqvD_BwE&gclsrc=aw.ds
This is the fuse between yellow key switch wire on throttle and connected to the B+. https://www.amazon.com/20mm-Glass-Holder-Inline-Screw/dp/B00L9RW5Y2/ref=asc_df_B00L9RW5Y2/?tag=hyprod-20&linkCode=df0&hvadid=198087646496&hvpos=1o19&hvnetw=g&hvrand=9143930672579770088&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001923&hvtargid=pla-392464500949&psc=1
Can i use a separate switch for the SVMC? Can I get a more reliable throttle?? Any suggestions??
Any help??
Also, when I got off the bike after it stopped, the motor was cool, the controller was cold, the battery was slightly warm to the touch. The battery charged right back up to 84v.
This is the throttle im using https://www.aliexpress.com/item/DC-12V-24V-36V-48V-60V-72V-Electric-Scooter-Twist-Throttle-3-Wire-Speed-Control-Power/32822899317.html?src=google&albslr=226930569&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&ds_rl=1258652&albcp=1581905725&albag=59263823906&trgt=349615372042&crea=en32822899317&netw=g&device=c&gclid=EAIaIQobChMIqpiXiuCX3gIVjEoNCh14cQIgEAQYAiABEgJBqvD_BwE&gclsrc=aw.ds
This is the fuse between yellow key switch wire on throttle and connected to the B+. https://www.amazon.com/20mm-Glass-Holder-Inline-Screw/dp/B00L9RW5Y2/ref=asc_df_B00L9RW5Y2/?tag=hyprod-20&linkCode=df0&hvadid=198087646496&hvpos=1o19&hvnetw=g&hvrand=9143930672579770088&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001923&hvtargid=pla-392464500949&psc=1
Can i use a separate switch for the SVMC? Can I get a more reliable throttle?? Any suggestions??
Any help??