DC voltage can make a HUGE dangerous mess if metal objects are poorly placed... if you are touching both poles on the battery with sweaty hands, or just being careless around the terminals...
as long as you don’t do those things.
Work on ONE SIDE OF THE BATTERY AT A TIME.
and cover the terminals with non conductive protection, plastic etc. Don’t wear jewelry around the wiring, and never work on more than one side of the battery at a time.
also, never work on more than one side of the battery.
12V, 24V, 36V, and 48V are all very dangerous if not respected.
24V is nearly harmless, but can SERIOUSLY shock you if the right conditions are present.
Don’t let those conditions exist around the battery, and 48V is as safe as 12V... but, disrespect 12V, and it irritates you... disrespect 24V, and you get a shock... disrespect 48V... yeah, bad times.
I at least know those things, I like what you did there with the working on one side thing. ;-)