cost of charging a panasonic battery?

[musicbooks]

Ok.. my maths has been ridiculed ( and it's not the first time)

So what is the cost of fully charging my panasonic battery for 2 hours 10 minutes each night? ( My commute leaves 4 lights on)

BW
musicbooks

 

[tillson]

I think the charger is 60 watts

Therefore 2.5 hours use at 60 watts or .06 Kilo Watts = 2.5 (hours) x 0.06 (KW)

Which equals 0.15 Kilo Watt Hours per charge. (Or 0.15 units of electricity per 2.5 hour charge)

My current Eon unit prices are 30p (first 225 units), 11p (Day Units), and 6p (Night Units)

Therefore if you charge in the first 225 units = 30 x 0.15 = 4.5p per charge.

Regular day units = 11 x 0.15 = 1.65p per charge

Night Units = 6 x 0.15 = 0.9 pence per charge.

 

[flecc]

Not ridiculed Musicbooks, just that your case for e-biking was even better than stated.

Given your new information of so little used each trip, the cost is a tiny fraction of the original estimate, making your case very much better. The charger's current is lower for the later stages of charging, so you're not paying the higher amounts for the early stages of charging an empty battery.
.

 

[Fecn]

The Panasonic LiMn battery is 260 Watt/Hours

If you have 4 LEDs remainig, you have 61-80% capacity remaining... This means you have used at most 101.4 watt hours.

Although your charger takes hours to charge, a long time is spent with the topping-up stage at the end, which uses hardly any power. The bulk-charge phase is very efficient.. More than 85% of the electricity that you're taking out of the wall socket will end up in the battery.

101.4Wh / 0.85 = 119.3 watt hours used to charge.

At 12p per Kilowatt Hour... that works out to 1.4 pence per charge.

 

[musicbooks]

The Panasonic LiMn battery is 260 Watt/Hours

If you have 4 LEDs remainig, you have 61-80% capacity remaining... This means you have used at most 101.4 watt hours.

Although your charger takes hours to charge, a long time is spent with the topping-up stage at the end, which uses hardly any power. The bulk-charge phase is very efficient.. More than 85% of the electricity that you're taking out of the wall socket will end up in the battery.

101.4Wh / 0.85 = 119.3 watt hours used to charge.

At 12p per Kilowatt Hour... that works out to 1.4 pence per charge.

Yes, but the bank account is still empty

Thanks guys.. Now I can justify the extra spend on the gear ( and beer )

bw
musicbooks