UTRAI 4000A Jump Starter — Portable 12V Car Battery Booster & Power Bank

Dead Battery? Back on the Road in 30 Seconds.

The UTRAI 4000A Jump Starter is the last emergency car tool you'll ever need to buy. With 4000 amps of peak current, it starts cars, trucks, SUVs, and diesel engines up to 10L — all from a device compact enough to fit in your glove box. No other car needed. No waiting for roadside assistance. Just clip the smart clamps, press the button, and go. It also doubles as a high-capacity power bank, so it's useful every day — not just in emergencies.

Key Benefits

• 4000A Peak Current — enough power to jump-start cars, trucks, SUVs, and diesel engines up to 10L
• 12V Auto Starting Device — works on virtually any 12V gasoline or diesel vehicle
• Built-In Power Bank — USB outputs charge your phone, tablet, or other devices between emergencies
• Compact & Portable — glove box-sized design; always with you when you need it most
• Smart Safety Protections — reverse polarity, overcharge, short circuit, and overcurrent protection built in
• LED Flashlight — built-in emergency light for nighttime breakdowns
• Wide Compatibility — works with most 12V gasoline and diesel vehicles

Whether you're commuting, road-tripping, or just want peace of mind in the parking lot — the UTRAI 4000A Jump Starter has you covered. Keep it charged in your glove box and forget about it until you need it. When that moment comes, you'll be back on the road before anyone else even finds their phone to call for help.

Frequently Asked Questions

What size engines can it jump-start?
The UTRAI 4000A can jump-start gasoline engines up to 8L and diesel engines up to 10L, covering the vast majority of cars, trucks, and SUVs on the road.

How do I use it safely?
Connect the red clamp to the positive terminal and the black clamp to the negative terminal. The smart clamps will alert you if connected incorrectly. Built-in protections prevent damage from reverse polarity, short circuits, and overcharging.

How long does the charge last?
When stored fully charged, the UTRAI maintains its charge for several months. We recommend recharging every 3–6 months if not in use.

Can I use it as a regular power bank?
Yes — the USB output ports work as a standard power bank for charging phones, tablets, and other USB devices.

Does it work in cold weather?
Yes — the UTRAI 4000A is designed to operate in a wide temperature range, making it reliable in cold weather conditions when batteries are most likely to fail.

SPECIFICATIONS

Peak Current: 4000A
Voltage: 12V
Engine Compatibility: Gasoline up to 8L / Diesel up to 10L
Power Bank Output: USB
Safety: Reverse polarity, overcharge, short circuit, overcurrent protection
Additional Features: LED flashlight
Weight: 2.87 lbs / 1.30 kg