Fast delivery, infected and equal to 4 D-Cell 10 000mAh charged does have about 30 hours. Taken that were completely empty, but my Mag-Lite is again fully "enlightened". Then I want to load my AAA and AA batteries, but since most were broken, couple of times checked, discarded broken batteries and load the rest. Horny device, I can only recommend! Ansmann 5207473 Photocam V Charger for AAA, AA, Baby C, Mono D and 9V E-Block