is there any kind of magnetic shielding that is not made from materials that are themselves attracted to magnetic fields
No. blankets help people because we generate heat and it keeps the heat from escaping Batteries emit no heat
no,it already has 1,the hood with the jute
Possible, but unlikely. If you really want to keep it from dying, use a battery with a better Cold Cranking amp.
any metal enclosure can be effectively used for electromagnetic shielding as the magnetic flux across a metal surface is zero. Magnetic lines of force can't enter a metal shielded enclosure.
At low enough temperatures where some materials are superconducting, a very effective magnetic shield can be formed from a cylinder of a superconductor surrounding a region where the magnetic field must be very low. Usually, you can't reduce the magnetic field below the value of the Earth's magnetic field at that spot because the shield will actually trap the Earth's field inside it when it goes superconducting, but it will shield against any external magnetic fields that are applied afterwards.
