controller size

[Mattjenkins1990]

If i install a 250v kit with a 48v 10.4 ah battery would it work and what controller would be required

 

[Deleted member 4366]

Use the 09 bottle battery with the included 20A controller if you want power and convenience.

 

[Mattjenkins1990]

Thanks again for the reply d8veh you have been on the money answering my questions. i really do appreciate you taking the time an entertaining my questions/

When you say use the 09 bottle battery you mean from BMS Battery ? Or is that a reference to the spec required. There seem to be a few options available to me. I was thinking either a 500w with a 48v 10.4ah, a 250w with the same battery, or potentially a 250 with a 36v slightly higher ampage battery. I am concious that the 500w is not road legal and implications that could bring but also want to make sure it has enough oomph if I need to get up to speed quickly to get round a bus or car and also provides me value for money in terms of fun I can have with it.

I am deliberating between front and rear wheel on a lightweight frame however am very new to all this so plans are changing on a daily basis

 

[Deleted member 4366]

The 09 battery with the controller vomes only from BMSB.

You should get the one with Panasonic cells if you can afford it because they are a lot better. The choice is 48v 11.6Ah or 36v 14.5 Ah. Both have approx 500Wh, so range is the same. The 48v one gives 33% more power. To be legal, your motor has to be a 250W one, so a Q100H or a Q128H - maybe with labels removed. The labels only stick on and are easy to remove. The 500w BPM is the same size and shape as the 250w one, but the markings are etched in, so difficult to kid anybody what you've got.

Rear wheel will be better if you want a bit of torque. A36v 201 rpm motor will run at 260 rpm at 48v. 260 rpm equates to about 22 mph in a 26" wheel. 201 rpm = 15 mph.

 

[Mattjenkins1990]

Thanks very much for the informative reply. A 48v 20ah controller will handle the motor fine and not burn anything out ?