I have recently bought two Turnagy Multistar 4000mAh batteries and today after a flight session I used the storage charge function on my Spider charger on these batteries for the first time and the first one took only 2 minutes to reach the storage charge level,according to the charger,and the second was there as soon as I activated the charger. The 2700mAh batteries I have take around an hour to get to the storage level and that seems normal. I was expecting the 4000mAh batteries to take longer to reach storage level or at least as long as the 2700mAh batts. All the batteries after storage charge are showing 11.38 to 11.39 volts and one of the 4000mAh batteries is showing 11.43 volts. They where all flown to the first sign of red led on hard acceleration then landed. The 4000's have only been used/cycled four times and the 2700's are 5-6 months old,lost count of how many times they have been cycled.Still getting good flight times and no puffyness. So is it just coincidental and the 4000mAh batts were at the right storage voltage or should I be concered about them? By the by,I would not buy the 4000's again as they have only given up to 2 minutes more flight time on the first two flights each and now they are on par with the 2700's at around 8 minutes on a calm day. I think my Phantom is at a weight where the extra flight time potential is cancelled out by the extra weight. I'm thinking of trying the Multistar 3000mAh next. I'll keep the 4000's for a hex I will be building up over the next few months.