Yes! I have a 650mah twist and a 1000mah twist and I love them both. Just be aware of the increase in length from the 1000 standard compared to the 1000 twist- that's why I bought the 650 twist as a backup. You can change the voltage from 3.2 to 4.8 and anywhere in between. The indicators on the twist end cap are hard to see well in some lighting situations, but I get by. There's some good reviews on youtube.