Size 4.5V 9V AA AAA AAAA C D Voltage 1.2 1.4 1.5 2.4 3 3.6 3.7 4.5 4.8 6 7.2 7.4 9 9.6 12 8.4 Capacity 0-1000mAh 1000-2000mAh 2000-3000mAh 3000-4000mAh 4000-5000mAh 5000-6000mAh 6000-7000mAh 7000-8000mAh 8000-9000mAh 9000-10000mAh ADVANCED