how to reduce dc voltage
Hai Gareth Covell
First of all, the idea is an advanced one. No simple idea will work. First, the cars motors and the drive circuitry are designed for 36 volts. Operating then on 48 volts is some what difficult as it may damage the drive or the motors or both. Secondly,for taking the 12 volts 150 watts from a 48 volts battery, you need to construct a down converter which will be a different circuit than the one existing, and the constuction should be done carefully following wiring principles used for Power electronic, strictly as the power you take and drive is massive. Any way, as you are not an electronic expert, i sugesst you to take help of any good friend who can handle this project. But as per my view, the project will cost you a lot. In case you go for the project, find some dealer who can supply you 48 volt motors of same capacity, the 48 Volt driver, as well a converter for 48volts to 12 volts which can handle alteast 200 watts. Good luck.