Features: The battery is small and compact, you can quickly complete the installation and get it into operation. Crafted with top notchs materials, this compact and portable battery module delivers a stable power output for your car. Perfect for car owners and automotive technicians seeking a convenient battery solution. Whether you're going on a road trip or facing extreme weather conditions, this battery provides a dependable power source for your vehicle. Say goodbye to battery related worries with this easy to install and long lasting battery module. Specifications: Material:Composite Material Size:As Picture Shown Color:Black For F20 F30 F31 G21 Part Number:84102447710 2447710 84109361678 Rated voltage: 8.0V Battery capacity: 330mAh Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Emergency Battery