BooKoo Portable Jump Starter 4000A 16000mAh — PD 18W Fast Charge, 3-Mode LED & Waterproof

If you need a reliable, grab-and-go solution for dead batteries, this BooKoo jump starter combines high cranking power with intelligent protections and fast charging for phones and tablets. Its rugged, waterproof housing and integrated 3-mode LED make it useful for roadside emergencies, outdoor adventures, and everyday preparedness. The unit’s smart screen and spark-proof clamps guide safe connections, while multiple output ports let you recharge devices on the move.

How quickly will this starter get my car running?

The BooKoo jump starter delivers a peak 4000A output and a 16000mAh battery capacity, enabling rapid starts for most 12V vehicles up to 8.0L gas and 7.0L diesel. It’s engineered to provide dozens of starts per charge at typical temperatures and still operate in cold weather down to -4ºF.

• Peak output: 4000 amps for quick engine cranking
• Capacity: 16000mAh supports up to ~20 starts on a single full charge
• Temperature range: works from -4ºF to 149ºF

Is it safe to use on my car’s battery?

Yes — the starter includes multiple safety features to protect both the vehicle and user. The clamp set and internal electronics offer reverse-polarity protection and prevent sparks, over-current, over-voltage, and short circuits for secure jump-starting.

• Smart clamp protection: reverse-polarity and spark-proof design
• Electronic safeguards: short-circuit, over-current, over-voltage protections
• Over-temperature and overcharge defenses for long-term reliability

What else can this power pack do besides start a car?

The BooKoo unit functions as a high-capacity power bank with dual USB outputs and a USB-C port supporting fast PD 18W and QC 3.0 charging. It also features a built-in LED with Lighting, Strobe, and SOS modes for emergencies and outdoor use.

• Fast charging: USB-C PD 18W and QC 3.0 port for quick device recharge
• Multi-mode LED: steady light, strobe, and SOS signaling for roadside safety
• Device support: charge phones, tablets, cameras, GPS, and more

How durable and portable is the BooKoo jump starter?

The starter is built for travel and harsh conditions with a waterproof, dustproof, and shock-resistant shell. It’s compact enough to store in a glovebox or trunk and comes with a protective EVA carrying case for added bump resistance.

• Rugged construction: waterproof and shockproof outer shell
• Compact design: lightweight for grab-and-go convenience
• Included accessories: jumper clamps, USB cable, adapter, and carry case

Who this is for: drivers who want a dependable, multi-purpose emergency power solution — from commuters and weekend adventurers to boat owners and rural drivers. If you value fast starting power, smart safety features, and the ability to charge devices while away from outlets, this BooKoo 4000A jump starter is designed to keep you moving and prepared for roadside and outdoor situations without bulky equipment.