Can I use my existing 24V battery with the 24V-AGR100 unit? Yes, you can use your existing 24V battery with the 24V-AGR100 unit, as long as its capacity is less than 5Ah. The runtime of the unit will vary depending on the capacity of the battery used. Related articles Can I use my old plug-in charger (iCHRG24-AC) to charge my new battery for the 24V-AGR100 unit? Can I purchase an additional battery for my unit? Are all batteries compatible with my 24V-X2-JB500? Find Your Snow Joe / Sun Joe User Manual (All Models) How loud is my Ash Vac ASHJ201?