Mouse
1 mW
- Joined
- Jul 2, 2020
- Messages
- 19
I'm about to make a casing for 5.6kWh, 2 X 48V 60Ah of 18650 cells as part of a motorbike conversion.
What I don't have is any kind of experience of is how hot (if at all) they will get under heavy use or charging.
I'm not expecting the maximum discharge to be much over 20kW or 3C and the maximum charging will be 4kW or about 0.7C
Probably worth saying I'm in the UK so there'll be no extremes of ambient temperature, but plenty of wet hence an enclosure
They are installed in a strong OEM casing that will allow air to pass through so I could install ducting ports to put a fan on it if needed for forced air cooling but would rather not, and most definitely don't want to build it all with no air cooling then have to rework it all later on after it's finished.
TLDR: Do DIY motorbike batteries (bigger than ebike) get hot enough to need cooling under heavy use?
Pic for attention, the current mockup.

What I don't have is any kind of experience of is how hot (if at all) they will get under heavy use or charging.
I'm not expecting the maximum discharge to be much over 20kW or 3C and the maximum charging will be 4kW or about 0.7C
Probably worth saying I'm in the UK so there'll be no extremes of ambient temperature, but plenty of wet hence an enclosure
They are installed in a strong OEM casing that will allow air to pass through so I could install ducting ports to put a fan on it if needed for forced air cooling but would rather not, and most definitely don't want to build it all with no air cooling then have to rework it all later on after it's finished.
TLDR: Do DIY motorbike batteries (bigger than ebike) get hot enough to need cooling under heavy use?
Pic for attention, the current mockup.
