36v 24v SLA

[Nigelk]

Hi

Is there any reason why I couldn't tap of 24v of a 36v supply of SLA battery's,so running two separate supply's of say 250w. one 24v and one 36v

I understand that there is going to be an in-balance but as the battery's are charged individual.

Thanks

 

[flecc]

Depends what you are supplying and whether both voltages are being taken off at the same time Nigel?

 

[muckymits]

will also kill the 24volt ones off first. We had the problem with trucks many years ago when the drivers got posh radios or CBs and at the time voltage droppers were a fortune

 

[Nigelk]

As I have a front 24v motor, i was wondering if I could put a rear 36v kit on it as well, so 24v motor on front and 36v motor on rear, so if when needed bring in the 36v rear motor on more inclines.

Thanks for replys

 

[flecc]

That would produce some severe imbalances as the 24 volt drain would be quite substantial before a hill is reached and the 36 volts taken. If you tried to use both motors together you might find one wouldn't respond with any useful output.

Either way I wouldn't recommend this since the 24 volt section could suffer very short life and fail prematurely. It would be ok to tap a small current such as for LED based lighting, but not a high current for a motor.

 

[Nigelk]

That would produce some severe imbalances as the 24 volt drain would be quite substantial before a hill is reached and the 36 volts taken. If you tried to use both motors together you might find one wouldn't respond with any useful output.

Either way I wouldn't recommend this since the 24 volt section could suffer very short life and fail prematurely. It would be ok to tap a small current such as for LED based lighting, but not a high current for a motor.

Thank you very much for the reply, most helpful.

 

[neptune]

I actually used this method many years ago on a home made trike. I had 4 x twelve volt batteries, and used to cruise on 48 volts when out of town. However, I had no controller, and I used a home made switch so that I could start the motor on 12 volts, then 24, then 36 and finally 48 . However, I was on 48 volts for more than 90% of the time , so there was no noticeable problem with battery balance.