Iron electric wrench, no batteries. How much is it?
. Yes, skateboarding. Don't damage the cover when you open the cover carefully. Then you can see the rubber cap of the 6 exhaust valves. Open the rubber cap and expose the vent. The inside of the battery can be seen through the vent.
Remedy: pry open the cover plate above the battery. Some of the battery cover is ABS glue bonding, and some batteries are connected to the buckle.