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You are correct about the range, the farthest I got on a charge before the pack had a cell hit 5.25 V was 32 miles. I could have probably gone 1 or 2 more miles but the truck was having trouble getting past 35 at that point. Fortunately I can recharge at work so it only needs to go 30 miles between charges. I almost run dry going to work, returning I have a little bit of charge to spare. As soon as I get the cash and time I am going to put in 6 more batteries to bump the system voltage to 120 V so I don't murder the pack.
Over the past 2 days I was able to get some data for the truck at 45 mph. There is a 3 mile stretch of road that is absolutely flat near work. I have traveled it 5 times going both north and south at 45 mph while logging the battery current and voltage. Trip A and B were on 1 charge, Trip C , D and E were on 1 charge. I rounded the current to the tens place and voltage to the volt. There was wind from the south both days. Since I was going 45 mph I cover 1 mile in 1.33 mins or .022 hours. To get my Wh/mile I just multiply the watts needed to go that mile at 45 mph by .022 hours.
Trip A - Heading South - 310 A @ 69 V - 21390 W - 470 Wh/mile
Trip A - Heading North - 280 A @ 70 V - 19600 W - 431 Wh/mile
Trip B - Heading South - 320 A @ 68 V - 21760 W - 479 Wh/mile
Trip B - Heading North - 290 A @ 68 V - 19720 W - 434 Wh/mile
Trip C - Heading South - 310 A @ 68 V - 21080 W - 464 Wh/mile
Trip C - Heading North - 270 A @ 69 V - 18630 W - 410 Wh/mile
Trip D - Heading South - 320 A @ 67 V - 21440 W - 472 Wh/mile
Trip D - Heading North - 290 A @ 68 V - 19720 W - 434 Wh/mile
Trip E - Heading South - 320 A @ 66 V - 21120 W - 465 Wh/mile
Trip E - Heading North - 300 A @ 65V - 19500 W - 429 Wh/mile
This averages to 449 Wh/mile at 45 mph.
This will be my base to compare future modifications of the truck.
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