Actually, that particular charger well "sense" the battery type.
I have a similar one,it well not allow a load to be connected to it directly,it well not allow a load to be connected to the battery when it is connected.
•Fully automatic microprocessor controlled
•100 amp engine start for emergency starting
•10/20 amp fast charge for self-adjusting, variable charge rates for everyday charging needs and maintaining your battery in peak condition
•Charges and automatically desulfates and restores car, truck, RV, farm equipment, AGM, gel cell and deep-cycle batteries
•2 amp slow charge, for charging and maintaining small batteries such as motorcycle, ATV, snowmobile and lawn tractor batteries
•125 amp Sure-Grip clamps for top and side-mounted battery posts
•Electronic touch-pad controls are easy-to-feel switches for selection of Digital Display, Battery Type or Charge/Start
•Choose from 12V regular automotive, 12V deep-cycle, 12V AGM or gel cell batteries
•Built-in digital voltmeter/tester helps diagnose problems
•Retractable handle serves as convenient cord wrap and for easy portability
trust me you well not get a led to spark on that charger ,its very good at what it does for its intended purpose.
Something along these lines may be in order
https://www.canadiantire.ca/AST/bro...Battery+Charger+with+75A+Engine.jsp?locale=en
brute strenght and ignorance....