My Account
Shopping Cart

Lokithor J402 PRO 3500A Portable Lithium Jump Starter with 100W Two-Way Fast Charging

Manufacturer

Part Number

J402 PRO
Sale Price

$143.48

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Lokithor J402 PRO is an upgraded, high-performance portable lithium jump starter delivering 3500A peak current and 2250A starting current — enough to reliably start 12V gasoline engines up to 9.5L and diesel engines up to 7.5L. Whether you drive a car, motorcycle, boat, RV, ATV, SUV, van, tractor, or mower, the J402 PRO is built to get you going in an emergency.

Equipped with Lokithor's proprietary ConnectMax technology, the J402 PRO intelligently detects the impedance of the clamp connection to your vehicle's battery, ensuring optimal contact and maximizing starting efficiency on every use. Its 88.8Wh lithium polymer battery delivers up to 60 jump-starts per charge and features an impressive 48-month standby time thanks to an ultra-low self-discharge rate — so it's ready when you need it most.

Key Features:

  • 3500A Peak / 2250A Starting Current — Handles gas engines up to 9.5L and diesel engines up to 7.5L
  • 100W Two-Way Fast Charging — Fully recharges in as little as 54–84 minutes via USB-C (100W); provides 3 minutes of charge to jump-start your vehicle; also powers phones, tablets, and laptops via USB-C (100W) and USB-A (18W)
  • ConnectMax Technology — Smart clamp impedance detection ensures optimal battery contact and starting efficiency every time
  • Comprehensive Safety Protections — Built-in BMS with spark-proof, reverse-polarity, over-charge, over-current, short-circuit, over-voltage, over-load, low-temp, and high-temp protection
  • Real-Time Battery Monitoring — Detects vehicle battery voltage continuously and alerts for abnormal conditions
  • IP65 Rated — Water-resistant and dust-tight enclosure; operates in temperatures from -4°F to 122°F (-20°C to 50°C)
  • 300-Lumen LED Flashlight — 3 modes for roadside visibility
  • Compact & Lightweight — Fits easily in a glove box, trunk, or gear bag
  • Service Life — Rated for over 1,000 charge cycles in good condition

What's Included: J402 PRO Jump Starter, Jump Starter Clamps, 12V DC Adapter, USB-C to USB-C Cable, Packing/Storage Bag, User Manual

The J402 PRO combines jump-starting power, fast charging versatility, and advanced safety technology in a rugged, portable package — making it an essential tool for any vehicle owner or roadside emergency kit.

So far, so good

Found some hard to find items I had been searching a while for.

Just what I needed at a good price !

.

Easy to order, cheap shipping...can't wait to receive the tires!

quick and easy

P

Needed it fast and they delivered on time at the best price I could find.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy