Posted by: [email protected]
With the prospect of soon having an e-bike battery charging overnight in our home I'm trying to assess the real world risk.
Is it the bigger the battery, the higher the risk of spontaneous combustion?
I mean, we already have tons of batteries in our home: laptops, phones, bluetooth speakers, etc. I've never worried about them up to this point.
The higher power PEV batteries have the challenge of packing a lot of power into a small volume and doing it at a low cost. Batteries are a big chunk of the cost of a PEV so saving there is helpful to lowering the market price. PEV power draws are much much higher than a phone or other small consumer device. That leads to higher heat and the potential for failures. The aim for lower cost and tighter packaging leads to risks of internal short circuits.
I don't think an e-bike battery is certain death or anything, but I wouldn't ignore the fire risk either.
You could do some reasonable stuff like:
- Only charge when someone is home.
- If the battery is not charging normally or shows any sign of damage stop using it. Store it outside until you can get it inspected/disposed of.
- Have a plan for what to do if a fire starts. [ie. charger setup near door to balcony so you can throw it out if needed]
- Store it in the least dangerous place you can [ie. garage on the bike vs. in an apartment closet] when not charging.