2.0 Pinger structure and assembly
The pinger has a simple screw top. Inside is a battery cartridge that holds four AA alkaline batteries. A rubber O-ring in the threads of the the cap prevents leakage.
Pinger structure.
Place four batteries in the battery cartridge and secure with a heavy duty rubber band. This holds the package together, even if the cartridge itself gets broken or jarred loose during net set out.
Place the end cap on top, be sure the O-ring is in place and hand tighten. You should hear a quick high-pitched ping when the battery cartridge is in the correct position.
Insert the battery cartridge into the pinger body with the two contact points on the cartridge positioned to match the two contact points inside the pinger body.
Don't over-tighten the top-cap - "hand tight" is good enough. If a top-cap refuses to release, use a screw-driver placed through the holes in the top cap to loosen it.