[dsraven]

If you plan on thick underpaid remember that can have an effect on final placement and fit of the carpet. Maybe some velcro on the carpet around the battery hole would also help or simply a 3 sided cut so there is a flap of carpet instead of a removable piece that will try to move around under foot. Depending on your preference for a door or hatch over the hole. Something that is removable and can be taken right out of the way is definitely preferable when it comes to servicing the battery, especially if there is any sort of acid leakage issue. Some remote boost plugs would make it easier to not have a hole in the carpet, then it becomes a once every few years job instead of possibly more often. Ensure you use some good method of preventing corrosion on the cables and terminals in that case. A battery should be checked and load tested at every service if it comes right down to it. Mostly quick lubes and home done servicing skips this check, as well as a charging system test, because of lack of tooling and thinking there is no need for it. That's partly why there is a need for boost logs, haha.