Datormagazin gives seal of approval to CTEK's RB4000
18 August 2026
CTEK's jump start booster RB4000 has received a boost of its own, from the revered Swedish tech news site Datormagazin, which gave its much valued "DMZ Rekommenderar" seal of approval.
Datormagazin's reviewer liked the RB4000's solid, compact design and its ability to start larger cars, with up to 45 attempts on one full charge.
The online magazine also flagged up the RB4000's "excellent safety features" – including spark proof operation and reverse polarity protection. Additional plus points were the smart power bank function for fast charging of modern smartphones, tablets and other devices, and the integrated LED light.
The review gave a 5/6 rating and said: "The CTEK RB4000 is a perfect tool to keep in your car as a proactive measure – whether for your own use or to help others." It added: "The Swedish CTEK RB4000 is a modern jump starter designed for demanding users."
Its glove box size hides a powerful performance, with a peak current of 4,000A and a minimum starting voltage of just 2.5V meaning the RB4000 can help vehicles with even highly depleted 12V batteries.
The review concludes: "Overall, the CTEK RB4000 is a technologically advanced jump starter that combines high starting power with broad battery compatibility and well-designed safety features in a compact package. It serves equally well as a lifesaver for a dead car battery and as a powerful power bank for electronic devices. With its IP65 rating, relatively fast charging, and clear user interface, it is built to be a reliable tool in any situation."
Thank you Datormagazin, it means a lot to us at CTEK that you recommend our booster to your readers.
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