| Heater Type | Image | Notes |
|---|---|---|
| Battery Heating Pads |  |
Not recommended for nickel-cadmium batteries. A thermostat is recommended when batteries are placed in a box to detect the box temperature and prevent battery overheating. |
| Thermal Wrap |  |
UL recognized authorized heating wraps, Euro heating wraps for Schuko Plugs, and heating wraps without thermostats. **Euro heating wraps for Schuko Plugs and heating wraps without thermostats are not UL recognized. |