Recent content by talltrees

I have a chinese made e-trike foodcart. One of it’s features is a motorized roof that lifts up with 4 motors driven by a controller connected to the battery via what looks like a DC power component. The motor controller is wired separately from the ignition and as long as a main breaker is on...

Yes, the roof motor is wired separately from the keyswitch. It is spliced into the power coming off the main positive terminal and the the return to the negative. Unfortunately as of yesterday the roof motor now is not working (but the rest of the system is). Nothing unusual happened this...

Thanks so much again for your thoughtful replies. They are really helping That’s a cool cargo bike! 🤩 A few few new developments: There’s another component that might have given me the trouble - a DC/AC 12V converter that is next to the controller. Thanks to your guidance I’m guessing that...

Hoo boy. Well unfortunately it looks like I have gone about this backwards. 😅 You say I don’t need to change the controller to match the battery - but it seems like I may have to as they are mismatched (90A controller vs 80A Battery BMS). Or? Since I have this very expensive battery and a...

Update: the truck turns on again! (And the older batteries are back in place). I’m guessing something tripped the controller - either it running with too much power from the new battery (overheating?) or the strange shut of sequence where I accidentally flipped the breaker off while the ignition...

It was driving with more power and speed with the newer battery - which I chalked up to it having more voltage. But I’m a noob here.

Yes 17s. Sorry, It’s might actually lithium not LiFePo. Does that make a difference? Custom Moped Scooter/ Motorcycle Battery 60V 100Ah Lithium Battery Pack - SmartPropel Lithium Battery This is from the mfctr: it is normal that the battery voltage is higher than 70V. The 60V battery is by 17...

Thanks for this reply. The manufacturer tells me the lithium battery is 17 in series. Are there typically fuses in the controllers? I looked at the wiring and did not see a fuse anywhere else. There is a big circuit breaker at the beginning - that needs to be on for the system to work - but it...

I have a three wheeled chinese electric foodtruck - like a Piaggio Ape. I was excited to upgrade range by adding a 60v 150AH Lithium battery pack from 60V lead acid. Custom made by Smart Propel but based on this 100Ah version. Charged the pack and installed it. It charged up to 73v. Managed to...