CTEK RB 4000 Portable Battery Booster and Jump Starter

The CTEK RB 4000 is a powerful portable 12V battery booster and jump starter, designed to get you moving again when a flat battery stops your journey. Compact, robust and easy to use, it is ideal for cars, vans, campervans, motorhomes, 4x4s, boats and work vehicles.

Delivering up to 4000A peak current, the RB 4000 provides serious starting power in a portable unit. CTEK states it can deliver up to 45 starts on a single charge, making it a reliable emergency essential for roadside use, leisure vehicle travel and off-grid adventures.

The RB 4000 is designed for 12V lead-acid vehicle batteries, including common battery types such as WET, MF, Ca/Ca, AGM, EFB and GEL. It is suitable for jump-starting a wide range of vehicles, from motorcycles and cars through to vans and larger vehicles.

More than just a booster, the CTEK RB 4000 also works as a practical portable power bank, with USB-A and USB-C charging ports for phones, tablets and other devices. A built-in multi-mode LED flashlight provides useful lighting for night-time breakdowns, engine bay checks or emergency signalling.

For safer operation, the RB 4000 includes spark-proof technology and reverse polarity protection, helping you connect with confidence even in stressful roadside situations. Its compact Swedish design and protective storage case make it easy to keep in your vehicle, campervan or motorhome ready for when you need it most.

Key Features

• Portable 12V battery booster and jump starter
• Powerful 4000A peak current
• Provides up to 45 starts on a single charge
• Suitable for 12V lead-acid vehicle batteries
• Ideal for cars, vans, campervans, motorhomes, 4x4s, boats and work vehicles
• Spark-proof technology for safer connection
• Reverse polarity protection
• USB-A and USB-C charging ports for use as a power bank
• Built-in LED flashlight with multiple lighting modes
• Compact, durable and easy to store
• Supplied with protective storage case
• Great emergency backup for touring, travel and off-grid use

Ideal For

• Campervans and motorhomes
• Cars, vans and 4x4s
• Boats and marine use
• Roadside emergencies
• Seasonal vehicles
• Work vehicles and fleet use
• Off-grid travel and adventure setups
• Keeping in the vehicle as an emergency jump starter

The CTEK RB 4000 is a high-performance portable booster for anyone who wants dependable starting power, smart safety features and useful backup charging in one compact unit. Whether you are heading away in the campervan, storing a seasonal vehicle or preparing for unexpected flat batteries, the RB 4000 is a practical piece of kit to keep close at hand.