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Old 12-03-2012, 08:23 PM
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Richard Martin Richard Martin is offline
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Join Date: Mar 2000
Location: Greenville, NC
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Originally Posted by larryinalabama View Post
How do you caculate the cost to recharge batteries???
Just multiply the watts that the charger consumes by the time it takes by the price per KWH.


200 watt charger and it takes 45 minutes to charge. The electric company charges per 1,000 watts used in an hour. 1,000 divided by 200 is 5. Take your cost per KWH and divide it by 5. Then multiply that by .75 since you're only using 200 watts for 3/4 of an hour. If you pay 12.0 cents per KWH then your cost to charge the battery one time is 1.8 cents.

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