Say 1 Kilowatt hour cost is 12 cents
Then here's my power specs for my ebike:
550 watts
48Volts
12 Ah
How much would it cost to fill up the battery of my ebike?
I would also appreciate if you explain step by step how you come up with the answer just for curiosity.
thanks
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Favorite Answer
12 Ah at 48 volts delivers 576 watt hours or 0.576 kwh.
so the cost of electricity is about 6.9 cents per charge if you run it down
plus the cost of replacing the battery after a year or so - my deep discharge battery for my mobility scooter costs $150, of course having a lot more amp hours.
biire2u
Since the electrolyte in a battery isn't the greatest conductor (compared to copper) and there is overvoltage required to charge a battery, you will need to put in about 40% more power into the battery to get that 12ah back from the battery.
Plus, you never get to use the whole 12ah because batteries lose performance quickly after they are about 75% discharged. So maybe you will get 8 ah out of the battery before you need to recharge
Then like I said, you will need about 40% more charge to get that 8 ah back into the battery so,
8ah * .4 = 3.2ah
8 + 3.2 = approximately 11.2 ah to charge back up from a battery with 4 ah remaining
11.2 ah * 48v * .12 = about 6.4 cents per charge
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Use a simple math that I learned in grade 4 from China.....
1000 : 550 = 12 : X
X = 550 * 12 / 1000 = 6.6 cents