Heavy Duty Car Battery Disconnect Switch, Auto Battery Power Cut-Off Breaker for Vehicle Electrical Safety

Something like this on the negative post:https://www.walmart.com/ip/Heavy-Duty-Car-Battery-Disconnect-Switch-Auto-Battery-Power-Cut-Off-Breaker-for-Vehicle-Electrical-Safety/19648967402 I have a knife switch style on my show car ($8 Amazon). When I store it, I open the switch and hook up a battery tender.