Today was a fairly typical photo outing for me. I shot about 200 images with the 5DmkII and about 100 with the 30D. I started the day with freshly charged batteries in both. Both battery indicators are still showing a full charge. I rarely look at the images in the LCD except for a quick glance at the histogram immediately after shooting.


My question is what charging routine is best for the batteries? I suspect that tomorrow I may shoot 50 to 100 images with each camera. Should I recharge or let them drain to near zero? I do have a back-up battery for each.


Thanks in advance for your knowledge.


Larry