Note: Make sure applicable model is used. Do NOT immerse batteries water. When not in use, batteries should be kept in a cool and dry environment. Do NOT use batteries beside hot or high temperature sources, such as fire and heaters. Do NOT throw batteries into fire or heaters. Do NOT connect the positive and negative poles of batteries with metal directly. Direct welding of batteries and penetration of batteries with sharp tools are prohibited. Description: Neewer VW-VBT190 battery (2 Packs) and dual USB charger is compatible with Panasonic HC-V110 V130 V160 V180 HC-V201 V210 V250 HC-V380 HC-V510 V520 V550 HC-V710 V720 V750 V770 HC-VX870 HC-VX981, HC-W580, W850, HC-WXF991 Cameras. Intelligent protection system can automatically protect batteries from overcharging, over discharge, over-temperature, over current, over voltage, short circuit, and electronic shock. Batteries are used for replacement and charging of Panasonic DV cameras, ensure a dry and cool enviroment while using. Specifications Replacement Li-ion Battery Battery Type: Li-ion Battery Voltage: 3.7V Capacity: 1950mAh Battery Size：4.3x3.1x2.4centimeters/1.69x1.2x0.9 inches Battery Weight: 0.09 pounds/41 grams USB Dual Battery Charger Input voltage: 5V-2.1A（MIN） Output voltage: 4.2V-730mA2 Charger Size: 11.5x6.9x1.8centimeters/4.5x2.7x0.7inches Charger Weight: 0.11 pounds/50 grams Material: ABS Charging Temperature: 0-45 degree Discharging Temperature: -20 to 60 degree Storage Temperature: -20 to 45 degree Package Contents 2 x Replacement Battery for VW-VBT190 1 x USB Dual Battery Charger 1 x USB Cable.