 # How to calculate battery charge cost

#### DonWerner

##### New Member
Hey guys,

I was wondering of any could tell me how to calculate the battery charge cost of a 500watt/13.4ah ebike battery? How many kwh do a 500watt battery contain and how many watts do the 2A Bosch charger use?

#### DonWerner

##### New Member
I figured it out myself. The 2A charger produces 460 watt an hour and with a charging time of 7 hours its about 3.2kwh for a full charge.

#### JayVee

##### Well-Known Member
If you're concerned about finances, there are more costly items such as inner tubes, brake pads, tires, cleaning products, bags, locks, and a host of other items that will cut into your budget.

#### DonWerner

##### New Member
Not worried about the charging cost, just curious and needed to know the circa cost when I am going to ask my employer if I can charge my bike at their expense everyday, while at work. • Alan Acock and JayVee

#### ronin2000

##### Member
• “ Multiply the battery voltage and amp hour rating to get watt hours ie. 360 volt 10 amp hour battery has 360 watt hours (divide by 1,000 to get Kilowatt hours)
• Check your local electricity prices, the average cost per Kilowatt hour in the USA at the time of this guide was \$0.12
• Multiply the Kilowatt size of your battery by the cost per Kilowatt hour electrical rate ie. .36 and \$0.12 = a complete charging cost of \$0.0342 or roughly four cents
• Estimate your trip distance cost by dividing the charge cost by the average range of your battery pack… I estimate the lowest range per charge by dividing the watt hour capacity of the pack by 20 ie. 360 / 20 = 18 miles per charge and now we divide \$0.0342 by 18 to get \$0.00171 per mile. That’s less than two tents of a penny per mile on an electric bike looking at electricity alone!"

#### DanielGlacial

##### New Member
• “ Multiply the battery voltage and amp hour rating to get watt hours ie. 360 volt 10 amp hour battery has 360 watt hours (divide by 1,000 to get Kilowatt hours)
• Check your local electricity prices, the average cost per Kilowatt hour in the USA at the time of this guide was \$0.12
• Multiply the Kilowatt size of your battery by the cost per Kilowatt hour electrical rate ie. .36 and \$0.12 = a complete charging cost of \$0.0342 or roughly four cents
• Estimate your trip distance cost by dividing the charge cost by the average range of your battery pack… I estimate the lowest range per charge by dividing the watt hour capacity of the pack by 20 ie. 360 / 20 = 18 miles per charge and now we divide \$0.0342 by 18 to get \$0.00171 per mile. That’s less than two tents of a penny per mile on an electric bike looking at electricity alone!"
10 kW is about 1 euro så around 1 euro for 3 charges ?

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