- Time of past OR future Camino
- 2016 Primitivo
2018 Pimitivo, VdlP
2022 Too Many
I've seen a few threads where the idea of charging the e-bike battery while enjoying lunch at a restaurant, a coffee shop or Taberna, and concurrently how much to offer for a full charge at an Albergue, is floated. I use an e-Bike regularly for day trips at home and need to avail of this help occasionally
I'm both looking for opinions and giving a reasoned opinion. I have seen suggestions on this and other forums ranging from the entitled stingy "I pay for a coffee, so I can plug in my monster power pack for 2 hours" to the royally generous of €5 for a lunch time charge. some campsites in Frances charge €2 for an overnight charge irrespective of the size of the powerbank.
I'm thinking of offering €1 for a lunchtime +/-1hour charge, and €2 for an overnight one.
I'll vary this with the cost of electricity, and I'm paying for the service of having a plug available to me more than the cost of power. I'm justifying the lunch v overnight difference with the imposition on the owner of the business: There often is a plug for every bed (more or less, and bring multiplug to leave 1 or more sockets for other pilgrims use while I hog it) while a restaurant/cafe may only have 1 or 2 outlets in the room open to the public and the battery/charger setup will be an imposition
My reasoning is the following:
As a reference I'll use the system I'm familiar: The Bosch e-bike system, I won't research the other popular ones (Yamaha, Bionx, Bafang, ...) as the numbers will be similar.
please note I'm not an engineer, and am happy to be corrected. These are approximations that - I think - are accurate enough for the purpose
charging efficiency 74% (found on ebike forum, though from experience with other devices not far off)
theoretical Power output : 36V x 4A = 144W
applying efficiency factor : 144W*100/74 = 195W
cost of electricity per kW/h €0.33
Cost per hour of charging : 0.33 *0.195 = €0.065
Full charging time from 0% to 100% for a
500Wh battery : 4.5h , cost = €0.29
1250Wh battery : 9.8h, cost = €0.63
Using a 4A charger (there are 2A and 6A chargers out there, the reasoning will be the same though the cost/time will vary)
I'm both looking for opinions and giving a reasoned opinion. I have seen suggestions on this and other forums ranging from the entitled stingy "I pay for a coffee, so I can plug in my monster power pack for 2 hours" to the royally generous of €5 for a lunch time charge. some campsites in Frances charge €2 for an overnight charge irrespective of the size of the powerbank.
I'm thinking of offering €1 for a lunchtime +/-1hour charge, and €2 for an overnight one.
I'll vary this with the cost of electricity, and I'm paying for the service of having a plug available to me more than the cost of power. I'm justifying the lunch v overnight difference with the imposition on the owner of the business: There often is a plug for every bed (more or less, and bring multiplug to leave 1 or more sockets for other pilgrims use while I hog it) while a restaurant/cafe may only have 1 or 2 outlets in the room open to the public and the battery/charger setup will be an imposition
My reasoning is the following:
As a reference I'll use the system I'm familiar: The Bosch e-bike system, I won't research the other popular ones (Yamaha, Bionx, Bafang, ...) as the numbers will be similar.
please note I'm not an engineer, and am happy to be corrected. These are approximations that - I think - are accurate enough for the purpose
charging efficiency 74% (found on ebike forum, though from experience with other devices not far off)
theoretical Power output : 36V x 4A = 144W
applying efficiency factor : 144W*100/74 = 195W
cost of electricity per kW/h €0.33
Cost per hour of charging : 0.33 *0.195 = €0.065
Full charging time from 0% to 100% for a
500Wh battery : 4.5h , cost = €0.29
1250Wh battery : 9.8h, cost = €0.63
Using a 4A charger (there are 2A and 6A chargers out there, the reasoning will be the same though the cost/time will vary)