I'm getting ready to sell my Fanstoys Dinobots and Perfect Fusion Cesium and want to test everything. The three I had bought brand new never had batteries installed. Two of them were bought off another fan here and those had batteries. One of the guns and both swords aren't lighting up. No corrosion on the leads. Likely just dead batteries. What batteries are used on those guns and swords? There's no markings on the batteries I see.
Do you have the instructions? It is listed in them. Anyway what I did (since I never used them and don't remember) is went to the threads and searched for batteries and restricted the search to "Search this thread only". LR626 or AG4 or 377 or SR626SW (all basically the same thing according to Google)