MaximilianMM
1 W
- Joined
- Aug 23, 2021
- Messages
- 64
Hi there,
I'm pretty new to e-bikes and batteries. I've recently built a steel frame road bike commuter conversion (rear hub). It's working nicely, but my battery seemed to run down alarmingly quickly today and I'm trying to work out if it's normal or not.
These are the specs:
I had run a rough estimation on the Bosch calculator tool (obviously not entirely accurate as I don't have a Bosch bike) and it returned 140km. That seems way too high though. I also used the 'divide your Wh by 12 to get km range' method, which returns 60km, and seems much more realistic.
My usage this time was: full charge yesterday, then two rides combining to 25km last night and today which pretty much ran the battery close to empty. It was pretty windy, I live in an area with decent hills, and I tend to ride with PAS level 5 and lots of throttle. So I realise those all decrease range.
My question is, do you think it's reasonable that they would halve the range, if 60km is a reasonable estimate? 30km isn't ideal for my purposes.
The battery is more or less brand new.
Here's a picture of the bike for reference: https://photos.app.goo.gl/jMiYxgWuc5VfEfYr7
Thank you!
I'm pretty new to e-bikes and batteries. I've recently built a steel frame road bike commuter conversion (rear hub). It's working nicely, but my battery seemed to run down alarmingly quickly today and I'm trying to work out if it's normal or not.
These are the specs:
- A 48V 15Ah / 720Wh 30A battery: https://caprouge.com.au/collections/ebike-batteries/products/48v-15ah-720wh-30a-tiger-shark-battery-bak-cells-cpwhbk48-15
- 48V 1000W rear hub motor direct drive, no regen
- Controller, 48v, maximum current rate: 30±1A
I had run a rough estimation on the Bosch calculator tool (obviously not entirely accurate as I don't have a Bosch bike) and it returned 140km. That seems way too high though. I also used the 'divide your Wh by 12 to get km range' method, which returns 60km, and seems much more realistic.
My usage this time was: full charge yesterday, then two rides combining to 25km last night and today which pretty much ran the battery close to empty. It was pretty windy, I live in an area with decent hills, and I tend to ride with PAS level 5 and lots of throttle. So I realise those all decrease range.
My question is, do you think it's reasonable that they would halve the range, if 60km is a reasonable estimate? 30km isn't ideal for my purposes.
The battery is more or less brand new.
Here's a picture of the bike for reference: https://photos.app.goo.gl/jMiYxgWuc5VfEfYr7
Thank you!