Black Friday 12.4 hours of mixed use (4850 + DBMD4 DSP) Battery, A single charge lasts up to 8 weeks, based on half an hour of reading per day with wireless off and the light setting at 13. Battery life may vary depending on use. Audible audiobook streaming over Bluetooth will reduce battery life. Battery, Approx 390 shots before recharging (viewfinder only), approx 470 shots (monitor only) in photo mode. Video mode approx 115 minutes (viewfinder only) and 120 minutes (monitor only). Battery