The Aspire CF G-Power 1100mah Battery is a premium quality carbon fiber coated battery for the utmost durability and power. The battery runs at 4.2 volts. The Aspire CF Battery series are high-end e-cigarette power systems. This battery series features stainless steel endpoints, a metal button, and a carbon fiber coated tube. The following three models make up the CF Battery Series: G-power, VV, and Passthrough. The Aspire CF Batteries contain a revolutionary spring connector. This unique technology ensures that there will always be a strong connection between the battery and e-cigarette tank. The structural design and control circuit of this battery series makes using it extremely reliable and stable.