Note: 16 batteries of this type purchased in January 2013, comments in October 2014, almost two years later. Excellent performance over time, I have used it extensively times and have abandoned twice 3 months. Promise kept, nothing to do with my Varta batteries that have not held one year in similar conditions of use! For the curious, Tascam DR680 use in a sound recorder (8 batteries and neighboring conso 500 mA) and a pair of micro Sennheiser G3 (2 batteries in the transmitter and the receiver as much). Charge cycles performed with a serious magazine (Powerex MH-C9000). I recommend 100%.