Note: This unit is a battery charger, not a car jump starter.

Fast 5A Charging Power — Charge your battery up to 5x faster with Sigma5’s 5A output, perfect for batteries from 15Ah to 120Ah. It also functions as a maintainer, desulfator, and trickle charger, ensuring long-lasting battery health.

Clear LED Display — Say goodbye to guessing games! The 3.2-inch LED screen shows real-time battery status, voltage, and charging mode, making it easy to monitor your battery with confidence.

Revive Dead Batteries — Got a dead battery? Sigma5’s Advanced Loading Mode can restore batteries with as low as 0.3V. It automatically detects, revives, and charges dead batteries, making them usable again.

Intelligent Battery Maintenance — Equipped with AI technology, Sigma5 adjusts to your battery’s needs with a 9-step charging optimizer, keeping your battery in peak condition without your intervention.

Built to Last — Crafted with high-strength resin, Sigma5 is shockproof, waterproof (IP67), and built with slip-resistant silicone. Durable clamps ensure secure connections, even in tough conditions.

Wide Battery Compatibility — Compatible with 6V and 12V lead-acid, as well as 12V lithium-ion batteries, including deep-cycle, AGM, lifepo4, flooded, gel, wet, maintenance-free, EFB, and calcium types. Perfect for cars, motorcycles, boats, lawn mowers, and more.

What’s in the Box — Sigma5 Smart Battery Charger comes with battery clamps, eyelets, a bracket with screws, a user manual, and a 3-Year Limited Warranty. All designed in the USA for your complete charging solution.