Help identifying my controller and limits

[BATFINK]

Hello guys i am trying to identify my controller for my bafange electric bike kit, i just want to know what is the maximum power it will take as i am looking to upgrade my kit and if my controller is good i will just keep that and save some money on a new controller.
My current setup is a
bafang 250 brushless hub motor
36 volt 10amp battery

and the controller which i will include images off on my flicker account

i want to know if this will run a 350/500watt hub motor from cell_man or similar and will it take a

http://www.flickr.com/photos/66525475@N07/6055727203/

http://www.flickr.com/photos/66525475@N07/6056293270

http://www.flickr.com/photos/66525475@N07/6055729323

one of the tall transistors says 25v on it the biggest transistor in its own photo says 100v and the other transistors say 50v

any ideas?

 

[BATFINK]

The kit is originally from Juicy Bikes in UK if that helps.

 

[BATFINK]

And the reason I'm asking is that its not always what is written on the label on the outside that reflects the parts they have used on the inside. cheers.

 

[dogman dan]

Well, your controller will not likely take a battery charged to much more than 36v nominal. Your battery is likely to be at about 44-45v when full charged.

As for putting your 250 watt controller on a 500 watt motor, it will work fine.. and put out 250 watts. Zero improvement.

So you simply need to get a new controller for the new motor. Then you will need a more powerful battery, since that one is good for about 400w max.

The only cheap thing for you to do, is get a slightly more powerfull controller for your existing motor. Look for something that will put out about 400w, or perhaps 500w at the very most. 15 amps x44v = 660w But much of the time you will ride along using about 400w when going 20 mph. So a 15 amp controller should work.

Your controller may put out 12 amps max, but at cruising speed puts out 6. So a 15 amp controller that puts out about 10 amps when cruising would be an improvement. I'm sure the motor can handle it.

 

[wesnewell]

I thought I saw just one shunt in the middle photo. Easy enough to do a shunt mod to increase amp output. But like dogman says, More than 50V max on that controller is going to be pushing it. Will probably be ok with 12s lipo though. I run 24s on 100V cap 40A controller.

 

[BATFINK]

Thanks for the advice guys I may just have to upgrade the whole system for a more full proof and more powerful system.

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