Battery or controller?

bteddy

1 µW
Joined
Dec 6, 2024
Messages
2
Location
usa
Purchased ebike from goodwill. the controller was bad. Purchased replacement from ebay (JN 36V/48V E-bike Sine Wave 26A,500/750W,SM,Three-Mode Brushless Controller). Connected everything. Set the battery voltage to 48v and the low battery warning voltage level to 39v.

When I twist the throttle the wheel doesn't move. The power level display is showing a low battery even though the battery is fully charged (52.4v). There is an error code of e010.

Anyone have any ideas?
Thanks for your time.
 
Pure ebike no pedals. No name on bike, looks like previous owner dogged it. The battery holds its charge, with out the motor running it stays in the 50's for a couple of days.
 
1. Probably a hundred displays for ebikes, and each one has their own error code, It helps if you read the manual and tell us what error 010 means, All it tells me is that you have a display,

2. Unless you bought the new controller from the same manufacturer as the old one, it's hardly ever going to work with the old display, Part of get-my-ebike running again is a description of the old electronics and the new ones,

3. Almost always, it's a wiring error that keeps new parts from working, Motors rarely burn out unless abused.

Links to the controller you bought will help. A pic of the old one and display too,
 
Don't twist the throttle hard ever when swapping controllers, use the white "learning wire" to configure the wires, colors don't work brand to brand, pick up wheel when plugging and unplugging wire, it will go full throttle until unplugged.
 
Put a jumper between the blue and red wires on the display plug from the controller, leaving your old display for your old dead controller. The best way to do this is to cut a corresponding 5 pin JST cable from something else (or buy a prewired pigtail online), and run the two wires that attach to the controller's red and blue wires into a switch. Then that switch is your on/off for the bike. I used a motorcycle light switch that fits in the handlebar.

I recently bought a few JN controllers thinking they didn't need displays (which I don't want anyway), but I had to do the above described operation to wake them up.
 
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