I’m using Milwaukee m18 batteries. The 5ah runs 4.5 hours, 12ah goes 13. The benefit is they work on my drill setups AND lvs setup, and I have a couple powersource adapters for usb and 12volt for various accessories.
The chargers available are great too; the new radio charger is on my list for road trips and the ac/dc charger gets used a lot.
I can’t see throwing down the coin for a spendy dedicated lithium, then the beast goes teats up when I’m out of town trying to have my fun. I’d probably start crying and need to take my ball home.