MIGS:
What is the weight of the charger you want to mount. I very highly recommend the NOCO 4 bank charger that weighs in at a little over 16 pounds and you can selectively choose the type of battery for each bank allowing you to run regular and Lithium batteries with just one charger. I mounted my NOCO to the rear deck lid on my PUMA as it made it very easy and it has been the best charger I have ever had.
Ritt.