A Month Driving the Electric Truck

Watt hour per miles driven over our first 20 charges. Averaging around 710 Wh per mile

We have driven our electric S-10 pickup for a month now, putting 187 miles on it and charging it 20 times (averaging around 9 miles per charge). We used around 132 Kwh of electricity to re-charge it (13% of our total household electricity usage for the month) which cost around $13.20 (or 7 cents per mile). The truck is averaging around 700-720 Wh of power per mile driven. If we were paying $3.75 per gallon of gas and getting 20mpg on an equivalent vehicle, the energy price comparable MPG rating of the truck would be 54mpg. The chart above displays the watt/hour per mile calculation for our first 20 charges. As you can see, the numbers jump around depending upon where we drive, what route we take, what speed we drive, etc. We are also in the process of breaking in a new pack of batteries).
Continue reading

Traction Battery Volt Meter

A red LED volt meter mounted in the dash

The S-10 electric pickup has an analog voltage gauge in the instrument cluster which is useful to get a general picture of how the battery voltage is changing while you drive, but hard to read with any real accuracy. The previous owner had also wired 12v and 120v wires into the center of the dash in an attempt to set up a digital volt meter on the traction batteries. But the 12v supply burnt out his volt meter, and when I purchased the truck it was dead. I bought a 200 volt LED panel display from a surplus supply house for $12 to replace it. I also added a 1A fuse on the 120v supply line in the engine compartment as a safety feature.
Continue reading

S-10 Electric Pickup

Side view of the Electric S-10 Pickup
Our new commuter vehicle (and my new toy) is a second-hand electric conversion S-10 pickup. We purchased it from the original converter after he had upgraded to a Ford Ranger EV.

It is powered by 20 six-volt lead acid (PbA) golf cart batteries wired in series, giving a nominal 120 volt system. Sixteen of the batteries are stored in boxes under the tilt-up pickup bed. The remaining four batteries are under the hood, where the radiator would be on an internal combustion engine (ICE) vehicle. It can be charged via either the QuickCharge 120V charger plugged into a standard 15Amp outlet (which takes 13 hours) or the Zivan NG3 high frequency 240V charger (which takes 7 hours and a 240 volt outlet).

16 six volt batteries under the tilt-bed of the pickup
Continue reading