Jump starter Lokithor JTC4250 — 89.6 Wh portable car starter, 4250 A peak current

The Lokithor JTC4250 is a portable jump starter with an 89.6 Wh LiFePO4 battery and a peak current of 4250 A. It combines jump-start, battery charging and 12V battery testing functions in a single compact unit. The device supports 6V and 12V systems and is suitable for passenger cars, SUVs, pickups, motorcycles and some light commercial vehicles. Built-in protections and ConnectMax connection analysis are designed to improve safety and starting reliability on the road.

Advantages

The JTC4250 offers a high peak cranking current for rapid engine starts, a rated voltage of 12.8 V for stable operation and an integrated charger with up to 90 W charging power. LiFePO4 cells provide long cycle life (over 2,000 cycles) and increased safety compared with some other chemistries. The unit also includes a 12V battery tester, Bluetooth mobile app support, USB‑A and USB‑C ports (PD up to 60 W) and a 300‑lumen LED flashlight. Rugged IP65 housing and a compact form factor improve durability and portability.

Suitable for

• Starting passenger cars, SUVs and pickups with 6V/12V systems
• Motorcycles and small engines
• Roadside emergency starts and occasional battery charging
• Diagnosing 12V battery condition with built‑in tester

When it may not be suitable

The JTC4250 is not intended as a permanent high‑power supply for heavy commercial vehicles beyond its stated engine limits; very large diesel trucks or vehicles with engines exceeding the specified displacement may require a dedicated heavy‑duty starter. It is also not a replacement for a professional workshop charger for complex battery maintenance or repair.

Key specifications

• Battery capacity: 89.6 Wh (7000 mAh)
• Cell type: LiFePO4
• Nominal voltage: 12.8 V
• Starting current: 3000 A (nominal), 4250 A peak
• Supported voltages: 6 V / 12 V
• Maximum supported vehicle battery capacity: up to 120 Ah
• AC input: 100–240 V, 50/60 Hz
• Maximum charging power: 90 W
• USB‑C PD output: up to 60 W
• USB‑A output: up to 5 V = 3 A (other profiles available)
• LED flashlight: 300 lumens
• Operating temperature: -20°C to 60°C (device); charging: 0°C to 45°C
• Storage temperature: -20°C to 50°C
• Protection rating: IP65 (with ports closed)
• Cycle life: over 2000 cycles
• Dimensions: 264 × 146.2 × 109.5 mm
• Weight: 2.3 kg (device); 3.3 kg with accessories

How to use

To start a vehicle, connect the BX80 clamp to the starter’s output and attach clamps to the battery terminals following polarity markings. Use the ConnectMax guided connection checks and follow the device indicators or the mobile app to confirm a secure connection. For charging, connect the unit to AC mains (100–240 V) or use the device’s charging output modes for 6 V or 12 V batteries, observing the maximum allowed battery capacity. Use the built‑in tester through the device menu or app to perform cranking, charging and battery condition tests. Close protective ports when operating outdoors and store the unit within the recommended temperature ranges.

What to consider before purchase

• Verify your vehicle’s engine size and battery voltage to ensure compatibility with the starter’s limits
• Check the maximum supported battery capacity (up to 120 Ah) for charging use
• Consider required charging power and USB PD needs (up to 60 W on USB‑C)
• Evaluate IP65 rating and operating temperature range for outdoor use in your climate

Usage recommendations

Use the clamp polarity markings and ConnectMax prompts to avoid reverse connection; perform a battery test before attempting repeated starts and recharge the starter after multiple jump‑starts to maintain battery health.