Hi I'm new to this forum and I've been working on an idea for how to power a road bike. The plan is to use a 9 cell lithium ion laptop battery to power a 100 watt motor. The key to this build is efficiency not speed and I would be happy to achieve a top speed of 10-12mph unassisted with a range of around 10 miles. The reason why I want to use a laptop battery is:
1. so I can simply plug it into my laptop when I need to recharge the battery.
2. It would be easily detachable from my computer or bike.
3. Extremely light weight.
4. I don't have to carry extra batteries because my laptop battery serves 2 functions
5. It's easy to find old laptop batteries & i can swap out the old cells for new ones.
6. Laptop batteries come with protection circuits built in.
7. The laptop battery is environmentally sealed in case I end up riding in the rain.
There's just one little problem with my plan though. I know lithium ion battery packs have a protection circuit inside them which is programed to automatically shut off the battery when driven too hard. I'm afraid that If i were to try running my motor with this battery it might trip the protection circuit which may destroy the battery pack all together. I've looked all over the internet trying to find a the data sheet on my battery pack but just cant find anything. Also the motor I'm using is rated for 12 volts & my battery pack is only 10.8 volts; will this significantly reduce the power output of my motor? Has anyone here been able to succesfully power thier E-bike off just laptop battery(s)?
Thinkpad T60 Battery specs:
Chemistry: Lithium Ion
Cells: 9x 18650 cells
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