recharge cost
recharge cost
(OP)
Hi, I have no engineering background whatsoever.
I'm trying to estimate the recharge cost of a battery, say lead acid.
So if the battery characteristic is as follows:
capacity is 15000 Wh.
Charge efficiency is 80%
Charge current is 15% of capacity, ie. 2,250 Wh
Electricity cost is 1 USD/kWh (on grid)
If the battery is discharged for 5000 W for 1 hour,
then I need 6000 W to fully recharge?
And it would cost me USD 6 to recharge? Is that right?
What is the charge current for in this case then?
Thx
I'm trying to estimate the recharge cost of a battery, say lead acid.
So if the battery characteristic is as follows:
capacity is 15000 Wh.
Charge efficiency is 80%
Charge current is 15% of capacity, ie. 2,250 Wh
Electricity cost is 1 USD/kWh (on grid)
If the battery is discharged for 5000 W for 1 hour,
then I need 6000 W to fully recharge?
And it would cost me USD 6 to recharge? Is that right?
What is the charge current for in this case then?
Thx





RE: recharge cost
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Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
RE: recharge cost
The current solution uses VRLA, trying to compare the cost if replace it with Zinc air.
Like I said, I have zero knowledge on electricity/battery.
I just want to make a cost projection.
RE: recharge cost
RE: recharge cost
> number of cycles of recharging
> robustness to charging conditions
> robustness to discharging conditions
> life cycle cost
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RE: recharge cost
Keith Cress
kcress - http://www.flaminsystems.com
RE: recharge cost
One nit: Why do you bother using Wh as a unit for most of your stuff, and kWh for the cost? Why not just use kWh throughout?
If you discharge @ 5kW for 1 hour, you need 6.25kWh to recharge at stated efficiency. Around here, that would cost you 63 cents.