So at this stage, we're not too concerned with the amperage or

the amount of current that the battery can push out.

We're solely going to focus on the three cell and four cell differences and

how they apply to the thrust.

So first, let's take a look at the example at 50% input with a five by four and

a half prop on a three-cell system.

So the three-cell or 11.1 volt system will provide 371 grams of force.

Now, this is times four because we have a quadcopter in Ford Motors.

So the total is going to be 1484.

We need 814 grams bare minimum to be able to get off the ground.

And we have 1484.

This is not quite the two to one ration that I'm looking for, but it is enough for

us to get up in the air and fly.

Now when we talk about our thrust ratio or the amount of force that we

provide as opposed to the amount of weight that we need to lift,

I like to shoot for two to one at 50% throttle in this design case.

This is going to give us plenty to fly, and

enough room that if we go up to 100% throttle,

we're going to have great maneuverability and we can get somewhere fast.

But let's take a look at some other numbers.

For the same prop on the same motor, but a four-cell system or

14.8 volts, we now have 561 grams of force.

Multiply that by 4, we get 2244 or 2,244.

Now we have to lift 1,130.

We're pretty close to that 2:1 ratio.

We're at about 1.95, so this is pretty good.

The input at 14.8 volts is giving us a lot more output even though we have to

lift more mass we can still account for it and get a better thrust ratio.