KEETEC CJS2000

Compact 2000 A jump starter for every car

The CJS2000 is a lightweight jump starter that gets your car going even with a flat battery – no cables and no second vehicle needed. It delivers 2000 A peak and 400 A cranking current, weighs just 0.55 kg and fits easily in the glovebox. It doubles as a power bank for your phone, and a built-in LED light helps in the dark.

Technical parameters

Peak current: 2000 A
Cranking current: 400 A
Battery capacity: 37 Wh / 2500 mAh
Battery voltage: 14.8 V
Battery life: > 1000 cycles
USB-C: 15 W input
USB-A output 1: 5 V / 3.4 A
USB-A output 2: Quick Charge
Charging time: 3–4 h
Display: LED status indicator
LED light: yes
Dimensions: 18.8 × 9.8 × 3.8 cm
Weight: 0.55 kg
Operating temperature: -20 °C to +60 °C

Features

2000 A peak current, 400 A cranking current
37 Wh battery (2500 mAh / 14.8 V) rated for over 1000 cycles
Charges via 15 W USB-C, full in 3–4 hours
Two USB-A outputs including Quick Charge for your phone
LED charge status indicator
Built-in LED light
Just 0.55 kg and 18.8 × 9.8 × 3.8 cm
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

CJS2000 quick guide

KEETEC CJS2000

SK/CZ