Auxiliary starter / Powerbank Osram BatteryStart 300

Compact, high-capacity (13 Ah) backup power supply AND powerful auxiliary starter. For 3 L diesel and 6 L petrol engines. For daily use or as an emergency reserve in the car.

Product number: HS9093

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Compact, high-capacity (13 Ah) backup power supply AND powerful auxiliary starter. For 3 L diesel and 6 L petrol engines. For daily use or as an emergency reserve in the car.

The Osram BatteryStart 300 is a combined backup power supply and auxiliary starter for cars, small machines and work machines using a 12 V system. The compact design combined with the high capacity (13 000 mAh) provides a high performance backup power supply even for daily use. The power supply has 2 USB ports, which can be used to charge e.g. a mobile phone and a headlamp at the same time. In addition, BatteryStart allows for auxiliary starting of up to 3 litre diesel and 6 litre petrol engines in the event of the original battery running down. Thanks to its compact size, the power supply fits neatly into a glove compartment for emergency storage.

In addition to its versatile charging features, the BatteryStart 300 features a powerful LED light that makes life much easier when the car battery dies. You never know when your car battery might die, which is why a backup power source like this is an extremely handy emergency item to keep in your car.

Delivery contents

  • Osram BatteryStart 300 auxiliary starter
  • Storage case
  • 12V power cables
  • USB charging cable


  • Make and model: Osram BatteryStart 300
  • Capacity: 13 000 mAh
  • Charging ports: 2 x USB 2.1A, starter cables with hooks
  • Integrated LED light
  • Current carrying capacity: 300A (start), 1500A (max)
  • Suitable for max 3.0 L diesel and 6.0 L petrol engines
  • LED indicator lights for standby mode
  • Dimensions: 168 x 88 x 33 mm (W x L x H)
  • Weight: 850 g (incl. housing and cables)
  • Warranty: 24 months

Easy shopping

You can pay for the order safely and easily with Paypal. Shipping costs starts at only 9.90€.

Fast delivery in 3-7 days

Products in stock are normally shipped out within 1-2 working days. We process orders continuously and orders placed before 13 are normally sent at the same day. The shipment takes usually 3-7 days.

100% satisfaction guarantee

We want you as a customer to be 100% satisfied with your purchase. That's why we offer 14 days to return the products if you are not happy with it! Safe and carefree shopping at its best!



Lighting fixtures and their associated accessories are in a constant state of evolution - and so is our product selection. Within the VALOSTORE online shop, you will always discover the most cutting-edge auxiliary lights, headlamps, work lights, and handheld flashlights, along with top-tier accessories available in the market. Valostore boasts its very own light measurement laboratory, ensuring that we provide accurate information regarding the actual luminous output and other performance-related metrics of our fixtures. We warmly invite you to explore the VALOSTORE online shop and indulge in a shopping experience like no other!


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