3 ms·
True, but if someone is going for low cost off the shelf 9 volt batteries it could be a temporary solution. Plus they would learn how to build an electrical hea
by Eduardo3rd 14y ago
True, but if someone is going for low cost off the shelf 9 volt batteries it could be a temporary solution. Plus they would learn how to build an electrical heater, which is a useful skill to have for lots of applications.