KEETEC CJS3000

3000 A jump starter with 15 V / 10 A output

The CJS3000 is a jump starter with power to spare: 3000 A peak and 600 A cranking current handle even tougher starts. Its 59.2 Wh battery is good for multiple attempts and tops up your phone on the go via USB-C or fast-charging USB-A. It also has a 15 V / 10 A DC output and an LED light for working in the dark.

Technical parameters

Peak current: 3000 A
Cranking current: 600 A
Battery capacity: 59.2 Wh / 4000 mAh
Battery voltage: 14.8 V
Battery life: > 1000 cycles
USB-C: 15 W input and output
USB-A output 1: Quick Charge
USB-A output 2: 5 V / 2.1 A
DC output: 15 V / 10 A
Charging time: 5–6 h
Display: LED status indicator
LED light: yes
Dimensions: 22.8 × 10 × 3.3 cm
Weight: 0.63 kg
Operating temperature: -20 °C to +60 °C

Features

3000 A peak current, 600 A cranking current
59.2 Wh battery (4000 mAh / 14.8 V) rated for over 1000 cycles
15 W USB-C input and output
Quick Charge USB-A plus a second 5 V / 2.1 A USB-A
15 V / 10 A DC output
LED status indicator and LED light
Slim 22.8 × 10 × 3.3 cm body weighing 0.63 kg
Overcharge and over-discharge protection, fuse and reverse-polarity protection

How to use

How to jump-start a 12 V vehicle

The jump starter must be charged above 20%. Don't press BOOST until the clamps are correctly connected to the vehicle battery.

01Plug the blue connector of the jumper cables into the jump starter.
02Connect the red clamp to the positive (+) and the black clamp to the negative (−) battery terminal.
03When the indicator shows steady green, start the engine.

What the indicator means

Steady green: The clamps are connected correctly and the unit is on. You can start the engine.
Steady red: The clamps are reversed. Reconnect them correctly and continue once the light turns green.
Flashing green: The vehicle battery voltage is too low. Press BOOST and, once the green light is steady, start within 30 seconds.
No light: The vehicle battery may be damaged or unresponsive. Check the clamps, press BOOST and, once the green light is steady, start within 30 seconds.

Downloads

CJS3000 quick guide

KEETEC CJS3000

SK/CZ