Lokithor J403HD LiPO 12V 10000A Heavy-Duty Jump Starter with ConnectMax

The Lokithor J403HD is a professional-grade, heavy-duty portable jump starter built for serious 12V starting demands. Powered by a 236.8Wh LiPO battery, it delivers an industry-leading 10,000 peak amps, making it capable of starting gasoline engines up to 16.0 liters and diesel engines up to 16.0 liters in seconds — even in extreme temperatures ranging from -4°F to 140°F.

Designed for the most demanding environments, the J403HD is ideal for semi-trucks, coaches, buses, motorhomes, and heavy industrial equipment used in mining, agriculture, construction, and vocational applications.

ConnectMax Technology:

The J403HD features Lokithor's proprietary ConnectMax system, which automatically detects the connection impedance between the clamps and the battery terminals. LED indicators provide instant feedback — green for a good connection, yellow for a poor connection — ensuring optimal contact and maximum starting efficiency every time.

Key Features:

• 10,000A peak current — starts 12V gasoline engines up to 16.0L and diesel engines up to 16.0L
• 236.8Wh LiPO battery — lightweight at approximately 9.15 lbs, far lighter than lead-acid alternatives
• ConnectMax Technology — automatic clamp connection detection with LED status indicators
• 10-Layer Safety Protection — spark-proof, reverse-polarity, over-charge, over-current, short-circuit, reverse-charge, low-temp, high-temp, over-voltage, and over-load protection
• 100W two-way fast charging — USB-C input/output up to 100W; fully charges in approximately 2–3 hours
• Multi-port power bank — USB-A (QC 18W) and USB-C (100W) outputs for charging devices
• DC output — 12.8V–16.8V / 10A for powering accessories
• 400-lumen LED flashlight — built-in for roadside emergencies
• Service life — rated for over 1,000 charge cycles with proper maintenance
• Operating temperature range — -4°F to 140°F (-20°C to 60°C)

In the Box:

• J403HD Jump Starter (x1)
• Jumper cables (x1)
• 12V car cigarette lighter to DC-5521 charging cable (x1)
• USB-C to USB-C cable (x1)
• USB-A to USB-C cable (x1)
• Accessories bag (x1)
• User manual (x1)

The Lokithor J403HD combines massive starting power with intelligent safety features and versatile charging capability, making it an essential tool for fleet operators, truck drivers, and anyone who demands reliability when it counts most.