Arrivals batteries charged ... then used a flash for more than 120 photos ... I use it for over a year 12 identical cells, "Ready to use", Varta brand, but in 2100 I / h, instead of 2400 I / h for them. These are the ideal batteries. After a full charge and 6 months of inactivity, they are always charged and therefore ready to use ... Quite critical, I think these batteries (2400 I / h) currently have in this offer, unbeatable value for money!