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This jumper box for car battery portable has multiple advantages, super strong starting performance, peak current of 5000A, can start 12V car battery in seconds, even in extreme temperatures. High-speed intelligent inflation, strong airflow, maximum air pressure of 160PSI, can inflate car tires to 20PSI in 2 minutes. The car battery charger jump starter has 4 units to switch, equipped with a high-definition screen to monitor air pressure in real time and automatic shutdown to prevent over-inflation, smart jumper cables clamp starting, tire inflation, mobile power, LED lighting, USB-C fast charging, and 4 nozzles to inflate a variety of items. There is an intelligent protection system, and the jumper cables indicator can detect operating errors and alarm in real time to ensure safety and durability. It is easy to carry and worry-free after-sales. It is small in size, light in weight, and the handheld design also comes with a full set of accessories.