The REDVOLT® (4-Pack) includes four REDVOLT batteries and a custom waterproof case. REDVOLTbatteries are a great power solution for shooters looking for the lightest weight camera rig possible. In many configurations, REDVOLTs are the ideal method of achieving hot-swap capability. For RED EPIC® and SCARLET® cameras, use REDVOLT batteries in coordination with the DSMC Side Handle to hot-swap batteries on other attached modules. For use with the DSMC2® camera system, REDVOLTs can be used with the DSMC2 REDVOLT Expander, providing hot-swap capability and advanced configuration options. TECH SPECS: DIMENSIONS Height: 3.21 in. (82 mm)Width: 1.67 in. (43 mm)Depth: 1.68 in. (43 mm) WEIGHT Approximately 0.55 lbs (249 g) BATTERY TYPE Rechargeable Lithium-Ion Battery BATTERY CAPACITY 37 Wh / 2500 mAh OUTPUT VOLTAGE 14.8 VDC OPERATING TEMPERATURE 0°C to 40°C (32°F to 104°F) CHARGING TEMPERATURE 0°C to 45°C (32°F to 113°F) STORAGE TEMPERATURE –20°C to 20°C (–4°F to 68°F) CHARGER COMPATIBILITY REDVOLT Travel Charger, REDVOLT Charger (Quad) Tech specs reflect both current and projected information. Everything is subject to change.