Wow.. Just reading the battery instructions and surprised: (1) They recommend not charging the battery and controller at the same time. This seems counter-intuititive given the two connectors and the higher output charger. (2) The batteries will auto discharge to below 65% if not used for 10 days. This is to prevent swelling. However it still recommends manually discharging to 30-50% if not being used for 7 days or more. So what are we meant to do? How many people manually discharge their batteries?