Well, you can mostly write off the fleeing raiders as no longer a threat to most.
The battery is a very large one, an industrial engine part. About the size of a backpack. Probably weighs about 20 lbs. Selling it may be hard. Gunmetal would be the most obvious interested buyer.
The weapons the raiders were carrying; 5 Colt Single Action Army revolvers and 5 H&R Model 8 single shotguns.