Hopefully some more tech savvy people out there can help me on this? I've just purchased a phantom battery discharger from bangood.com TMS Battery Discharger 3-6S 12V Light Bulb For DJI Phantom 2/3 DJI Inspire1 When i use it in mode 1, it discharges the battery to 3.8v, apparently this is fine to prevent the battery swelling up when stored for long periods according to bangood. According to Dji, I need to store the battery with 40-50% capacity when storing it Phantom 2-Preparing the Flight Battery - DJI Wiki After using the discharger in mode 1 and I check how much charge is left, my batteries show 75% (3 Lights flashing). So I've been switching to mode 2 to drain further and watching the batteries as they discharge to 50% (only 2 lights flashing), this means I have to keep an eye on it for ages, which doesn't seem right to me. My question is, is the discharge to 3.8v fine, and my extra discharge unnecessary? Or is there a better solution out there that I'm unaware of, I don't want to risk more expensive batteries getting ruined. Thanks for your help!