I was just wondering how many batteries you use in a day. This is only my 4th day with my bloog. I have 2 of the 65mms and it seems I need about 2 I/2 charges to get through a day. Not sure but it seems like my one battery lasts about an hour longer than the other, but it's hard to say since usage varies during the day. Also I heard that these batteries don't have a memory so there's no harm in charging a battery that's not dead. Is this true? I just ordered 2 more 65mm batts yesterday. How many do you folks usually carry with you? As for carts It looks like about a 24 ml cart and a half or so will get me through a day so far. How about you folks?