r/WK2

Hi everyone,

I've got a 2021 WK2 Trailhawk with the Hemi. I live in the Northwest Territories, its gets seriously cold here. Battery failed on me 2 years ago when it was -50C, had to warm up the inside for about 24 hours before it would even turn over. Then this past winter there are definite signs its getting weaker, so 5 years old, that battery has served me well.

Google is suggesting an upgrade to a Group 49/H8 battery. I'd also like to install a battery blanket, and I actually snapped off the plug off my block heater cable (put on a janky extension cord fat yellow plug to get me through the rest of the winter).

I'm looking for the best battery recommendation, maybe a trusted review for installing a blanket around that. And if I'm doing some wiring, replacing the block heater cable and connecting both it and the battery blanket to a single plug in, possible re-routing to a better location than just hanging out from the corner of my hood.

For clarity, I'm reasonably handy and have access to all the tools. Haven't done any work on this Jeep yet since new, literally hasn't needed anything other than regular fluids, and I did brakes and rotors all around last summer. Sitting at 110k km's.