Hello,
I'm looking for some help troubleshooting my "project bike" I have a working converted mountain bike, but took on this other bike as a project. It's a "SoloRock" moped style ebike, Not sure how old it is, but assume that it is over 10 years as it has a drum brake on the front.
I purchased it used for $125, without batteries. Was told it was in working condition.
I put my 48v (20ah) Lithium Ion battery in it. Worked well, and went on trips up to 5 kilometers without problems. Unfortunately, the battery from my other bike is a triangle battery and did not fit in the battery box.
Ordered and installed a 52v (20ah) LiFeO4 battery. Installed it, and the bike died on the test ride after about 1 km. Loss to power and the battery meter goes to 0%
Put the 52v battery in my mountain bike conversion and ran it hard on full throttle for about 4 km, and it was fine.
I replaced the motor controller with this: https://www.aliexpress.com/item/100....order_list.order_list_main.17.65ff1802zgjvyv and it still gives me the same result. Tested a couple more times and distance to failure became shorter every time. After loosing power, I measured the battery voltage at ~5 volts, after disconnecting the battery, it returned to 52v.
My guess is that there is a short somewhere in the system and (thank heaven) the BMS in the battery cut out to save the day! Can a short in the motor do this? Should I rewire all the power cables in the bike?
Thanks for any suggestions on what I should do next...
Peter
I'm looking for some help troubleshooting my "project bike" I have a working converted mountain bike, but took on this other bike as a project. It's a "SoloRock" moped style ebike, Not sure how old it is, but assume that it is over 10 years as it has a drum brake on the front.
I purchased it used for $125, without batteries. Was told it was in working condition.
I put my 48v (20ah) Lithium Ion battery in it. Worked well, and went on trips up to 5 kilometers without problems. Unfortunately, the battery from my other bike is a triangle battery and did not fit in the battery box.
Ordered and installed a 52v (20ah) LiFeO4 battery. Installed it, and the bike died on the test ride after about 1 km. Loss to power and the battery meter goes to 0%
Put the 52v battery in my mountain bike conversion and ran it hard on full throttle for about 4 km, and it was fine.
I replaced the motor controller with this: https://www.aliexpress.com/item/100....order_list.order_list_main.17.65ff1802zgjvyv and it still gives me the same result. Tested a couple more times and distance to failure became shorter every time. After loosing power, I measured the battery voltage at ~5 volts, after disconnecting the battery, it returned to 52v.
My guess is that there is a short somewhere in the system and (thank heaven) the BMS in the battery cut out to save the day! Can a short in the motor do this? Should I rewire all the power cables in the bike?
Thanks for any suggestions on what I should do next...
Peter