With an incredible 7000A peak current, JS-373B is built to handle the toughest engine starts — from trucks and SUVs to construction and agricultural vehicles. Equipped with automotive-grade 60C high-rate lithium cells, it delivers reliable performance even in extreme environments as cold as -40°C. Ideal for professionals who demand power on the go.

The JS-373B supports a blazing-fast DC 29V/5A input, charging fully in under 2 hours. Whether you're jump starting or powering digital tools, it keeps up with your pace. Designed for multitasking, it also doubles as an emergency power supply for mobile devices — making it a true all-in-one roadside companion.

Be prepared for anything with integrated LED lighting featuring three versatile modes: steady light, strobe, and SOS. Whether you're dealing with a breakdown at night or signaling for help, the JS-373B ensures you're seen, safe, and supported.

From internal circuitry to rugged exterior, every detail of the JS-373B is crafted.The advanced BMS (Battery Management System) offers full protection against overcharging, overheating, and short circuits. Whether for personal use or fleet operations.