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Brightwire J4 Portable Car Jump Starter & 20000mAh Power Bank
Sale price
$59.00
Regular price
$89.00
Dead battery at 7 am? Start it yourself. The Brightwire J4 is a slim 12V jump starter that lives in your glovebox. No second car, no cables across the street, no waiting for roadside help.
Three moves, then you drive
- Clamp on. Plug the clamps into the J4. Red to (+), black to bare metal or (−).
- Switch on. Press the battery button and check the charge indicator.
- Turn the key. The engine starts. Unclamp and let it run for 20 minutes.
3 in 1
- Jump starter for 12V petrol engines up to 2.5 L: cars, motorcycles, snowmobiles and small boats.
- 20000 mAh power bank with USB output for your phone.
- Built-in LED flashlight for dark mornings.
In the box
- J4 unit
- Red and black jumper clamps
- USB charging cable
Free US shipping from our US warehouse (3–5 business days) · 30-day returns · Not recommended for diesel engines.