Using dc dc step up Converter

[kvx86]

1. I want to use dc dc step up to increase the battery voltage from 12v to 24v. how many pieces of dc dc step-up required? (150W DC-DC Boost Converter 10-32V to 12-35V 10A max output). I use 48V 800 watt electric moped 800Watts 32A 48V controller using 4x 17 AH Lead Acid Battery

2.Can I make the connection in series at the output (DC DC Step Up Converter) with other battery?

 

[amberwolf]

1. I want to use dc dc step up to increase the battery voltage from 12v to 24v. how many pieces of dc dc step-up required? (150W DC-DC Boost Converter 10-32V to 12-35V 10A max output). I use 48V 800 watt electric moped 800Watts 32A 48V controller using 4x 17 AH Lead Acid Battery

2.Can I make the connection in series at the output (DC DC Step Up Converter) with other battery?

I'm not sure, but I think you are intending to run your motor faster by increasing the voltage with the DC-DC? If so, this is unlikely to work well; the DC-DC units probably will not be able to supply enough current during startup from a stop, or high loads. It probably wont' hurt anything to try, though, other than possibly blowing up the DC-DC converters.

If you do try it, you'd have to parallel enough of the DC-DC units to give you the peak current the motor controller and system will ever need.

If it does work, it will use up your battery power (range) faster than before, if for no other reason than that the DC-DC conversion process is nowhere near 100% efficient, so it wastes a significant part of the converted power as heat. How bad hte problem is depends on the specific converter efficiency.

Probably you will be better off adding another battery.

In either case you may have to also modify your controller (and maybe other electronics) to run off the new higher voltage.

 

[kvx86]

Actually I want to increase the distance by combining 4x 12v 17Ah be 24v Lead Acid Battery (12v 35 AH x 12v 35 AH) and 12V 20 AH LifePO4 battery into 24V using a DC DC Step up converter,so the total voltage of the battery becomes 48v. Thank you for the reply. May be too risky and confusing to try this.