H-19H Tips on Speedlight Care and Reference InformationSpecificationsExternalpower source BatteriesMin. recyclingtime(approx.)* 1Min. number offlashes* 2/recycling time*1Nikon High-performanceBattery PackSD-9*31.5 V LR6 (AA-size) alkaline × 4 1.4 s 300/1.4 – 30 s1.2 V HR6 (AA-size) rechargeableNi-MH × 4 0.9 s 320/0.9 – 30 s1.5 V LR6 (AA-size) alkaline × 8 0.9 s 480/0.9 – 30 s1.2 V HR6 (AA-size) rechargeableNi-MH × 8 0.5 s 430/0.5 – 30 sNikon High-performanceBattery PackSD-8A*31.5 V LR6 (AA-size) alkaline × 6 1.5 s 300/1.5 – 30 s1.2 V HR6 (AA-size) rechargeableNi-MH × 6 1.1 s 260/1.1 – 30 s*1 Time between flash firing at full power and the flash-ready indicator illuminatingwhen flash is fired once every 30 seconds*2 Number of times flash can be fired at full power with flash-ready indicatorilluminating within 30 seconds*3 The same type of batteries used with both the SB-5000 and the external powersource• With fresh batteries. Performance may vary depending on remaining batterypower or battery specifications.