SDM Neptune Harbor Freight RC Boat Battery Adapter

My son got a Harbor Freight RC boat from my dad for his birthday. Out of the box it's pretty fast. We wanted to buy a spare battery pack so we could spend more time on the lake and less time on a charger but had no luck. This adapter allows you to use commonly available 7.2v NI-mh stick packs with a Tamiya conector. It uses the factory mounting location and screws. This is a work in progress so there may be updates later on.