https://www.groupon.com/deals/gg-lithiu ... 0_20170209Lithium Jumper Pack and Power Source
Mobile Power
Power bank with jumper cables
Jolts dead car batteries back to life
USB port for charging mobile devices, such as smartphones and tablets
Conveniently Portable
Includes a PU case for storage and travel
Small, compact design
Leave in the trunk or backseat of your car
Good to Know
Built-in rechargeable battery
Capacity: 8,000mAh
Product dimensions: 5.16”x2.95”x0.98”
Product weight: 1lb.
In the box: jump starter, adapter, car charger, clamp, USB cables, PU case
They work.