Start with confidence in any season.With 2300A peak current and robust LiFePO₄ technology, the JS-78B delivers instant starting power for most 12V vehicles — from sedans to light trucks. Engineered to perform in extreme cold, it powers up reliably even at -40°C (-40°F). No delays. No second tries.

Stay powered wherever you go.Equipped with dual USB outputs and a 12V/10A DC port, the JS-78B keeps your smartphones, tablets, and other digital devices fully charged. The multi-function interface offers seamless support for on-the-go energy needs — perfect for road trips, camping, or emergencies.

Illuminate your surroundings when it matters most.The JS-78B features a high-efficiency LED flashlight with three modes: steady beam, strobe, and SOS. Offering over 100 hours of runtime, it ensures you’re seen and safe during nighttime emergencies or roadside repairs.

Engineered for peace of mind.With lithium iron phosphate battery cells, the JS-78B offers superior thermal stability, enhanced safety, and a longer cycle life — rated for over 2000 uses. The integrated BMS protects against overcharging, short circuits, and overheating, so you can jump-start with total confidence.