I'm not clear if this is quite the same thing, but I found that CKEditor removes embedded images if the native Image button was removed from the toolbar (in my case, because we are using the IMCE plugin).
Add Delta = 0 to a multi-value field
chown root index, update and authorize.php
A good example to use is a time lapse shoot of one image capture per minute with the HERO3+ Black edition camera. Standby in photo mode uses 1.9 watts per hour. The 4.37 Wh battery would be expected to last 4.37/1.9 = 2.3 hours. Or 138 shots. The extra power used during the shot itself is minimal.