How to read the characteristics of an electric motor?

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and7ey2014-04-17 10:30:01

Physics

and7ey, 2014-04-17 10:30:01

I choose an electric car for my child. From the characteristics of the engine and battery, I want to understand: (1) how long it will drive without recharging, (2) how long it will take to charge, (3) what is the power of the electric car.
The specifications are as follows:
1) Battery 6V/7Ah
2) Motor 6V/20W
3) Electric vehicle weight 18kg, allowable load weight 35kg.
How can I convert these numbers into the data I need? What if there are two batteries?

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2 answer(s)

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Pavel Vasterov, 2014-04-17
@zxc80

According to the information you provided, you will not understand this in any way.
It is not known how correctly the "capacity" of the battery, the power consumption of the engine, is indicated.
The state of the electric motor, battery, wiring and transmission, load characteristics are unknown.
Only consumer reviews can help you , of course I can write a formula for you, but its result will not mean anything, you can’t even focus on it.

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Ivan Somov, 2014-04-17
@jsom

if you want specific numbers, then they can only be found by reviews, and if you count by formulas, then you need to drill around here www.solarhome.ru/ru/basics/batteries/ab_params.htm , but for this you need to know which Akum is in the typewriter