LOKITHOR – JTC4250 – 4250A LiFePO4 Jump Starter, Battery Charger & Tester
The LOKITHOR JTC4250 combines four essential automotive power functions in one portable unit. It can jump-start compatible 12 V vehicles, charge 6 V and 12 V batteries, perform professional 12 V battery tests, and operate as a portable DC and USB power source.
The internal 7000 mAh, 89.6 Wh LiFePO4 battery produces a starting current of 3000 A and a peak current of 4250 A. It is suitable for compatible gasoline engines up to 10.0 litres and diesel engines up to 8.0 litres.
Powerful 12 V Jump Starting
- 3000 A starting current and 4250 A peak current.
- Designed for compatible 12 V passenger cars, SUVs, pickups, trucks, motorcycles, boats, and powersports vehicles.
- Supports gasoline engines up to 10.0 L and diesel engines up to 8.0 L.
- ConnectMax technology monitors the connection between the clamps and vehicle battery.
6 V and 12 V Smart Battery Charger
The integrated charger supports compatible 6 V and 12 V lead-acid and LiFePO4 batteries. Charging output reaches up to 6 A and 90 W, with support for vehicle batteries up to 120 Ah.
- 100–240 V AC input.
- Standard charging, repair, and forced-charging functions.
- Low-voltage battery detection down to approximately 2 V.
Bluetooth Battery Testing
- 12 V battery-health evaluation.
- Cranking and starting-system testing.
- Vehicle charging-system testing.
- Bluetooth app viewing supported.
Portable Power and Lighting
- USB-A output: 5 V/3 A, 9 V/2 A, and 12 V/1.5 A.
- USB-C input/output: 5–20 V/3 A, up to 60 W PD.
- BX80 output: up to 90 W with AC power or 60 W from the internal battery.
- Integrated 300-lumen LED work light.
- IP65 protection with ports closed.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | LOKITHOR |
| Model | JTC4250 |
| SKU | LOK-JTC4250 |
| Starting Voltage | 12 V |
| Starting Current | 3000 A |
| Peak Current | 4250 A |
| Engine Capacity | Up to 10.0 L gasoline / 8.0 L diesel |
| Battery Capacity | 7000 mAh / 89.6 Wh LiFePO4 |
| Cycle Life | More than 2000 cycles under good conditions |
| Charger Output | 6 V/12 V, maximum 6 A and 90 W |
| Supported Battery Capacity | Up to 120 Ah |
| LED Light | 300 lumens |
| Protection Rating | IP65 with ports closed |
| Dimensions | 264 × 146.2 × 109.5 mm |
| Weight with Accessories | Approximately 3.3 kg |
What’s Included
- LOKITHOR JTC4250 unit
- BX80 intelligent clamp
- USB-A to USB-C cable
- 1.5 m power cable
- User manual























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