I just changed my OEM Fit battery. Does anyone know the purpose of the black corrugated plastic sleeve that surrounds the battery? It's interesting that the sleeve is large enough to surround the larger R51 battery. I'm stunned that my OEM 151R battery lasted almost eight years.

 

They are there to help with corrosion and some insulation. I wouldn't remove it.

 

Diese Kunststoffleisten sind dafür gedacht, dass die Batterie in verschiedenen Halterungen passt. Wenn Du sie damit montieren kannst, dann solltest Du sie da lassen wo sie sind.

 

My 2018 Fit never had any such thing. I'd guess that it's not essential.

 

Exactly, couldn't have said it better myself.

 

it says it all......

i removed mine in the swap