Always double-check the battery’s terminals and ensure the cables match the correct polarity before connecting. It doesn’t take much corrosion on the terminals to limit or even stop the flow ...

EVs today mitigate this impact to a certain extent with battery preconditioning and heat pumps, but that doesn’t weatherproof ...

You want to make sure that a battery plugged in the wrong way, or a polarity mistake with your bench PSU doesn’t damage that hardware. It’s easy enough to plop in a diode for protection ...