Have you seen those chemical warmers which you boil to recharge and can trigger by pressing a button? Put inside gloves they can keep you going for about an hour.
Yeah i agree with what your saying, however im just experimenting with different ideas, but i have failed to find any info on heating elements.
On my travels around the web i have found many battery powered heating contraptions. I.e , I found something called a portable vaporiser, which is for heating herbs apparently. It claims that it can heat for an hour from a 1500mA hour battery.
[EDIT] https://gotvape.com/store/vapir.oxygen.vaporizer.php
Could you please explain the basic idea behind heating element, or maybe where to get one from, or how to make one.
If I wrapped the wire around some metal, would the metal be dangerous to touch, electrically speaking? (not temperature)
I.e. if you touched the water inside a kettle after just turning it on, would you be electrocuted?
If I wrapped the wire around some metal, would the metal be dangerous to touch, electrically speaking? (not temperature)
I.e. if you touched the water inside a kettle after just turning it on, would you be electrocuted?
There is a LOT!!!! of power in a car battery, easy to cause a LOT of damage. Normal non-rechargeable AA's etc. don't have much energy stored in them, and a fairly high internal resistance - so are reasonably safe. NiCd or NiMh have low internal resistances (particularly NiCd) and can provide enough power to be dangerous (and to self-destruct).
The same amount of power dissipated in load and battery doesn't mean they get as hot as each other - to get 400 degrees you have a very small element, and a comparatively massive battery.
Personally I've always used wire from electric fires, either the bar or silicon tube type - we even used to stock (years back) replacement elements (coils of wire) to go inside the silicon tubes.