Replacing the stock controller on a chinese ebike

[Dormin]

I'd like to replace the current controller and LCD combo by DMHC on my chinese ebike due to some issues and lack of documentation & features. Any ideas on good replacements? I'd like to keep my current battery and motor and just change the controller and LCD. I am interested in the open source controller firmware which I've found on this forum, so it would be a plus if the controller would have a STM8 microcontroller...

This is what I have now:
Battery: 48V 17Ah 5p13s LG 18650 cells, 20A continuous current draw
Motor: JNW-104H geared BLDC with Hall + speed sensors, 1000W, rated voltage 36-60V, 3-phase
And here's a picture of the sticker on my current 1000W DMHC controller, I haven't found any additional information/documentation regarding this unit:

 

[AHicks]

I can share the fact I'm not caring much for what came on my new Rad City either. After a lot of reading, unless I come across something more attractive, I'm moving towards an LCD3 display and a KT48 series controller. I'm familiar with these installed on 2 conversions I've already done, and very happy with the control they give me regarding setup functions. You can do about anything you want using the LCD to program. No laptop required. Going to that much trouble, it's very likely I'll go with an entire conversion kit, using a hub motor with twice the power I have now (750 > 1500 watt). Not that much more money. Will report back with components used/action(s) taken.

You might want to read up on some Sonders bike user groups. They're moving in the same direction I'm considering, have developed a 'kit' consisting of a display and controller that's a pretty simple install from what I can see.

 

[Dormin]

Hi and thanks for your reply. Any specific reason why you'd go for a LCD3 instead of LCD6? Isn't LCD6 newer and better (I don't really know, which is why I'm asking )?

Also, if I would buy for example a 48V 26±1A max controller would I need to limit the current draw in the LCD settings because my battery is rated for 20A "maximum continuous discharge current"? Its instantaneous maximum discharge current is 60A.

I've been thinking about buying this controller and pair it with a LCD6: https://www.ebay.ca/itm/RisunMotor-...3.TR12.TRC2.A0.H0.Xebike+controller+1000.TRS0

 

[AHicks]

Here's a link to the manf's web site so you can clearly see the differences.

http://www.szktdz.com/en/news.php?type=343

 

[liverpool1963]

Hi, I have a DMHB motor controller voltage 36/48 electric current 12-1a
5 speed all power has gone my batteries are all ok so I'm thinking it might be the controller any help would be great