freeride rev
1 mW
can I use a EGO kit battery ( 48V 12.5Ah) with a 36 V 250w LSW-675 sine wave controller that has a 15 A current limit without damaging the battery or the contoller or motor ( a Q75 36V 250W hubmotor) ? thanks
newbie to e bike building- battry controller compatability
- Thread starter freeride rev
- Start date
teslanv
1 MW
Your EGO battery will likely bee too high of voltage to run on the 36V controller.
Often a 36V controller will have a High Voltage Cut-off (HVC) of around 42-45 Volts, which is well below where you want a 48V battery to be charged.
Often a 36V controller will have a High Voltage Cut-off (HVC) of around 42-45 Volts, which is well below where you want a 48V battery to be charged.
dogman dan
1 PW
Since the battery is 12 ah, and the controller 15 amps, your maximum current will be slightly over 1c draw rate on the battery.
Most bike batteries can handle up to 1.5c continuous current, so that looks ok to me. 1.5c for a 12 ah battery is 18 amps.
But if your controller has an HVC set to 36v, then you would have a controller that won't turn on. Maybe it will run, Maybe it won't.
Most bike batteries can handle up to 1.5c continuous current, so that looks ok to me. 1.5c for a 12 ah battery is 18 amps.
But if your controller has an HVC set to 36v, then you would have a controller that won't turn on. Maybe it will run, Maybe it won't.
motomech
10 MW
You have a problem.freeride rev said:
Since the Q75 is a sensorless motor, you need a sensorless controller.
I have tried many sm. controllers sensorless @ 48V and only had lasting success with the Infineons.
On my MXUS motor, I use This Grin/Infineon;
http://www.ebikes.ca/shop/ebike-parts/controllers/c3620-nc.html
But it is a True 20 A controller and is too strong for your Q75.
You could use it w/ a Cycle Analyst to dial it back;
http://www.ebikes.ca/ca-dp.html
These are quality componates, but by the time you buy a Batt., you will have spent as much as a complete new conversion kit.
Your best bet is to sell your system and buy a Q100 kit.
PS-there is one other possible option, you could contact Ecrazyman;
http://www.ebay.ca/sch/e-crazyman/m.html
and ask him about a sensorless 48V/15A controller. He used to offer them.
Jonca
10 mW
Does anyone have information if LSW-675 controller will work with 44v battery? I am planning to use Q 75 36v 201rpm front hub motor with 12s LiPo battery pack.
It seems there are not many controllers which will work with sensorless Q75. I have understood that sine wave controller could be quieter and better, thats why I am thinking of LSW-675 Sine Wave Controller. But I am concerned that 36v 201rpm will be bit too slow for my purpose.
Or does someone know until what speed the 201rpm q75 would give even slight assist at 700c bike with 10s Lipo battery?
It seems there are not many controllers which will work with sensorless Q75. I have understood that sine wave controller could be quieter and better, thats why I am thinking of LSW-675 Sine Wave Controller. But I am concerned that 36v 201rpm will be bit too slow for my purpose.
Or does someone know until what speed the 201rpm q75 would give even slight assist at 700c bike with 10s Lipo battery?
Jonca
10 mW
Or do you know the same for S06P controller? If it can handle the voltage of 12s Lipo, 43,2v Nominal.
