It can, but if you use the SL Stinger XT charger, it's a fast charger, and not inherently heathly for the SL UltraStinger battery, which uses the standard rate charger... at least that's what the paperwork said. Sort of makes me wonder why the battery in the Stinger XT seems to always go down the tube in just a few months use, but the UltraStinger's battery is still going strong, charge after charge.
-Jim