Looking at replacing my battery as I'm now running a winch and some other electrical components, wanting to get a sears platinum p4. My question is, can I hook the regular terminals to the top post and my winch cables to the side posts? I thought I read somewhere not to do that, but can't find it now
The Diehard Platinum P4, aka 34-78DT, has side posts that you can connect a winch to, and your normal battery connections go on top as usual. That's a superb battery, you should notice the improved performance of it right away,
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Some batteries have tin foil thin strips running from the main posts to the aux posts. They can overheat and fail if you attach a high amp draw (winch) to the side posts. I was told, and then checked under the plastic to confirm, that the Diehard Platinum has sufficiently thick straps to handle the load at the side posts. Not quite bus bars, but close enough that i don't think you could cook them without overheating the cells first anyway.
I knew I had read somewhere that it wasn't advised to use the side posts for a winch hookup, but that was for an optima, after researching the p4s I see that they have a much thicker side strip and that it is safe to hookup a winch.