I bought a new battery charger CTEK MXS 5.0 POLAR, I used to have CTEK XS3600. I needed cold weather specific model and with more power, the old one is 3.6 amps, and this new one is 5.0amps. Also the polar model cables should be more cold proof and it has more functions for battery recondition.
Here’s fast video showing the main stuff in the package.
I post more info as the story develops.