I charged up my Typhoon H batteries ready for a morning of flying then I needed to cancel. So, here I am with two fully charged batteries. I'm still waiting for my Typhoon battery connectors to arrive although I do have a "smart" charger with a discharge option. Looking through the documentation it talks about connecting up using the balance board. I wondered if this is actually needed as looking inside the Typhoon itself I see there are only two pins that connect to the battery. So, during flight it simply uses the batteries main + and - terminals and no balancing takes place. So my questions are: 1) Can I discharge just using the + and - without using a balance board and is it safe to do so? 2) I will discharge down to 3.7v but what discharge amperage should I set the charger to? I'm using a Prophet Sport Quad 4 x 100 AC/DC charger.