Yes , Thats the switch I was talking about, I just wish it had dual inputs and dual outputs so that you could use two batteries, and have two inputs to the Reciever, like when you are using a Jr 921 /9000 spectrum reciever. You could have two reciever inputs for power and spread the amp load between two JR connectors at the reciever. I sucks to have to buy two of these if you wanted to use two A123 battery packs, no regulators. I really like the idea of an amp counter to monitor the battery charge level, of these new cells. Maybe they will come out with another version. Jack.