Hi,(adsbygoogle = window.adsbygoogle || []).push({});

i really hope someone can help me with this...

what type of battery that is suitable for an electric vehicle(slow walking speed,electric wheel barow)? is it a deep cycle marine?

I have a problem on how to choose the correct battery.

i have choose a motor which can produce a max mechanical power output of 400Watts.

http://www.boschmotorsandcontrols.c...2/kennlinie.htm [Broken]

if you look at the characteristic curve, my working torque would be around 2-3Nm, the corresponding current required is about 100A. The problem is due to the fact that the vehicle need to be as compact as possible, i can only choose one 12V battery 100Ah battery. i initially try to pick the right motor by using the assumption that, stall torque>torque require.This i know is not efficient+the rpm is slower near stall torque.

Right now the motor that ive choosen got the right working torque(2-3Nm) and rpm, and is >50% efficient but the power source could not supply more than (2-3Nm), what happens if the required torque is more than 2-3Nm??

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Electric vehicle battery question

**Physics Forums | Science Articles, Homework Help, Discussion**