I have two projects coming up that will require unusual battery configurations. I will, in all probability make my own battery packs, they will be NiMh. One will be 12 vdc, and the other may need to be 19.2 vdc. I will need to protect these batteries with resettable fuses, if possible. Can anybody suggest a method for doing this? Is there a formula for determining the proper voltage/current rating for such devices?
Thank you.
I use 30 volt, 2.5 amp polyfuses in my diesel installations. 30 volts exceeds the voltage of my lithium-ion packs, and I do not expect to draw more than 2.5 amps with any of my diesels. I have not had a shut down yet, so I guess my power rating guess was right.
I purchased them from Mouser Electronics under the follow stock number 576-30R250UUI. As I remember they were less than 35 cents each. They look very much like the polyfuses Aristo-Craft uses in their locomotives.
Yes, there is a formula, it’s called Ohms Law…
You need to determine the current draw, etc.
Wasn’t there a recent thread on exactly this already?
Greg