Mode 2 : On : Flash : Off 24 Battery LED Error LED Remaining battery charge Printing Communication Level H Approx. 60 ~ 100% Possible Possible Level M Approx. 40 ~ 60% Possible Possible Level L Approx. 20 ~ 40% Possible Possible Level S Approx. 10 ~ 20% Possible Possible Level E Approx. below 10% Impossible Impossible