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

Dead Battery? Back on the Road in Minutes.

A dead car battery doesn't have to mean a tow truck and a two-hour wait. The UTRAI 4000A Jump Starter fits in your glove box and delivers enough peak current to start cars, trucks, SUVs, and even diesel engines — all from a device you can hold in one hand. It's also a full-featured power bank for charging your phone, tablet, or other devices on the go.

Why 4000A Peak Current Matters

Most consumer jump starters top out at 1000–2000A — enough for small cars but underpowered for larger engines. The UTRAI's 4000A peak current handles V8 engines, diesel trucks, and vehicles with larger batteries that standard jump starters can't touch.

Key Features

• 4000A peak current — starts cars, trucks, SUVs, and diesel engines up to 10L
• 12V auto starting device — compatible with all standard 12V vehicle batteries
• Built-in power bank — USB output to charge phones and devices while you're on the road
• Compact & portable — fits in a glove box, trunk, or go-bag
• Safety protections — reverse polarity, overcharge, and short circuit protection built in

Frequently Asked Questions

What size engines can it start?
Up to 10L diesel and all standard gasoline engines. Check specifications for exact engine compatibility.

How many jump starts per charge?
Approximately 20–30 jump starts on a full charge depending on battery condition and temperature.

How do I charge the jump starter itself?
Via USB-C or the included charging cable. See specifications for full charging details.

Is it safe to use on modern vehicles with sensitive electronics?
Yes — built-in safety protections prevent damage to vehicle electronics.

SPECIFICATIONS

Battery Capacity: 3.7V
Battery Capacity (mAh): 12000–18000
Battery Cycle Life: About 300 times
Brand Name: UTRAI
Car Jump Start Output: 12V
Certified: CE, FCC
Conversion Rate: 85%~90%
Origin: Mainland China