Things just keep getting better…This is an improvement to their white 750 mAh battery (Recharge 1,000 times). This one is 950 mAh, is still 85% after one year and recharges 500+ times, but it is nearly one-third more available energy! The white ones weigh 12 grams (as near as I could weight them); the new black ones weigh 13 grams. 1/12th more weight equating to 1/3rd more power is pretty good! Available Dick Smith, etc.