Package includes: 1 battery Dimensions: 1x 0.65 x 1.88 in (25.6* 16.6* 48 mm) Fast Charge with USB Port: Our 600mAh 9 volt USB rechargeable lithium battery with USB charging port is fully charged in less than 2 hours. Saving your time since using a standard Ni-MH battery takes 6-12 hours. Energy Saving & Eco Friendly: This rechargeable 9v batteries can be recharged up to 3000 times, saving thousands of common batteries and reducing a significant about of landfill waste. Built-in LED Charging Indicator: Our 9v rechargeable batteries let you know when they are fully charged. Thanks to the advanced Lithium Ion technology, they charge fast and easy. The red indicator shows that in charging. The green indicator shows that full charge. So if you need to put them to work and suspect they are not full, just plug them in for a little while and you'll know it full charge or not. Wide application: 9V batteries rechargeable are perfect for smoke alarms, metal detector, professional audio, toys, guitar, medical devices and more. Advanced Safety Protections: Our 9V rechargeable Li-ion battery has Over-Charge Protection, Short-Circuit Protection, Over-heat Protection, Over-current Protection and Over-voltage Protection with CE, RoHS, FCC, UN38.3 and MSDS Safety Certifications. X219