Are there any true bolt on (no drill) 2nd battery kits?

[2021nightshade4x4]

I don’t have a practical purpose for a 2nd battery but want the experience and practice doing it. With this being my first attempt I would like to see if there are any options that use existing fasteners local to the area it will be installed.


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[jdm-v35]

I have the shrockworks tray which is bolt on, and I believe most kits are "no drill". That is pretty expensive for something you have absolutely no need for though. I would say by the time you get a bolt in tray kit, do your wiring and the battery you will easily be >$1k into it.

 

[57HotrodVW]

C4 Fabrication makes a nice, bolt-in setup, that goes in an empty spot near the passenger side firewall:

4Runner Spare Battery Tray - Passenger Side / 5th Gen / 2010+ - C4 Fabrication

 

[mizzougrad01]

I installed this one myself. took less than half a day. An idiot?s guide to a dual battery setup on 4Runner - YouTube