Awesome, about to do the same. So mine is pretty covered in battery acid. Did some cleaning of it with a baking soda/water solution and wire-bristle brush. Someone is telling me I need to replace the entire negative connection... Pictured below (NOT MY PICTURE)Just replaced my original 2016 HR-V LX battery (purchased in late 2015), 30,000 miles. The cranking seemed to be getting weaker so I thought it would be a good idea since the battery is 5 years old and winter is near. Bought the 51R Interstate battery at Costco for $77 with 36 month warranty. This one is rated at 500 CCA (more than enough for this small car) and had a 10/20 date code. Very easy DIY job; everything is 10mm.
Is there somewhere this unit/connection is sold specifically for our cars? Haven't been quite able to find the exact piece.