- Compatible model:This battery pack is only compatible with WOLFBOX MF200 compressed air duster. - Supports standalone fast charging:Supports standalone fast charging (full charge in 2.5 hours) and hot-swapping during device operation. Multiple battery packs can be rotated for continuous use, eliminating runtime interruptions entirely. - Compatible with multiple charging methods:It offers four charging options: car charger, wall adapter charger, power bank and computer charger. - Battery Indicator Light:Charging: Indicator lights flash in sequence. Fully charged: 4 indicator lights are fully illuminated. Low battery: Gear display light flashes. - Battery Capacity:The battery pack integrates two 3000mAh Li-ion cells in series, delivering 7.4V voltage and 22.2Wh total energy. This dual-cell design provides stronger power output than traditional single-cell batteries, meeting the demands of high-power devices.