Battery experts since 2004.
From Berlin. For the whole of Europe.
CELLONIC develops and sells rechargeable batteries, chargers and accessories for everyday devices. We are the own brand of subtel GmbH – designed and tested in Germany, at home throughout Europe.
Technology is intended to extend,
not replace.
We believe in repairing rather than throwing things away. In keeping things rather than buying new ones. For us, a replacement battery is more than just a source of power – it’s a way of thinking.
CELLONIC was born out of a simple observation: devices that are used every day rarely fail because of a fault with the device itself. They fail because of the battery. With the right replacement, the same tool, the same phone, the same camera will continue to work for years to come – and you’ll avoid a purchase that was never really necessary.
Behind CELLONIC is the subtel GmbH Based in Berlin: specialising in power solutions for mobile devices since 2004, with our own logistics, multilingual support and a network stretching from Lisbon to Helsinki. CELLONIC is our own brand – not a white-label product we simply resell, but one we have developed, tested and are fully accountable for ourselves.
That makes us slower than an anonymous marketplace seller. And more honest.
Six things we can’t do without.
Independence
Your favourite device will keep working even when the original battery has given up the ghost. No need to stick to the manufacturer’s charging cycles.
Sustainability
Repair rather than replace. Longer product lifecycles, less electronic waste – the environmentally sound choice is usually the economically sensible one too.
Certified safety
Every CELLONIC battery is in accordance with UN38.3, IEC 62133, CE and RoHS Certified. Protection against overcharging, short circuits and overheating – tested, not just claimed. Find out more →
Compatibility
We develop batteries for your device – no matter how specialised the model is. Over 2,700 batteries for devices that others overlook.
Developed in-house
No reselling, no ‘black box’ supply chain. We design, source and test – and take full responsibility for every detail.
Available across Europe
In-house logistics, multilingual support, short delivery routes. From the very first click to the battery fitted in your tool.
From AAA batteries to laptop batteries – over 2,700 battery models for everyday devices.
From a Berlin shop to a European own-brand.
Foundation of subtel GmbH
Launched in Berlin as a specialist in batteries and accessories for mobile devices.
Our first online shop
Launch of the subtel online shop for the German market. Expansion into France and the Netherlands.
CELLONIC becomes a brand
The first 500 batteries were launched under the name CELLONIC – laying the foundations for our own brand.
Our own logo, our own identity
The first CELLONIC logo is designed. Expansion into Austria, Switzerland and Belgium.
Our own website & new product ranges
Launch of the CELLONIC website. Expansion to include power tool batteries and camera accessories.
200 laptop batteries & our own packaging
The laptop battery range is entering a whole new league. Fresh packaging, a clean look.
‘Essentials’ sub-brand
With CELLONIC Essentials, we are expanding our range to include a line designed specifically for professional repairers and keen DIY enthusiasts.
Over 2,700 batteries in our range
Current range: over 2,700 replacement batteries, 325 camera and lens accessories, 250 chargers. Available throughout Europe.
Consistent quality across Europe.
Ready to breathe new life into your device?
Find the right CELLONIC battery for your model in just a few steps – or browse through our full range.