Over 2,700 battery models, tested and certified to international safety standards. With a 3-year warranty, and available throughout Europe.
Our response: Yes – provided they are certified and built correctly.
We design, test and dispatch our batteries ourselves. Every CELLONIC battery meets the same international safety standards as the original batteries from the device manufacturers – and is individually tested before dispatch. So you can keep your device running yourself, without compromising on safety.
Brand-specific cells, protection circuits, temperature sensors – every component in our batteries serves a clearly defined purpose. The built-in protection against overcharging, overvoltage, short circuits and overheating is not optional, but comes as standard. That’s what a reliable replacement battery looks like to us.
Overload, overvoltage, short circuit, overheating – the built-in protection kicks in before the problem leads to a fault.
Disconnects the cells as soon as the final charging voltage is reached – no overcharging, no swelling.
Keeps every cell within the safe voltage range and prevents harmful deep discharge.
Detects a short circuit within milliseconds and cuts off the power supply immediately.
A sensor continuously monitors the temperature and stops charging if the device overheats.
Four international standards. Each one assesses a different safety aspect of our batteries.
Mandatory testing for global transport. Includes altitude simulation, temperature cycling between −40 °C and +75 °C, vibration, shock and short-circuit tests. A lithium battery may not be shipped by air, sea or road without a UN38.3 certificate.
Tests whether a battery is safe in normal use: overheating, short circuits, mechanical stress and service life under realistic conditions. The standard for safe lithium-ion cells in portable devices.
Confirms that the product complies with all applicable EU requirements regarding safety, health and environmental protection. A prerequisite for the sale of electronic products throughout the European Economic Area.
Restricts the use of harmful substances such as lead, mercury and cadmium in electronic equipment. An EU requirement for all electronic products – to ensure that batteries do not harm the environment, either during use or when disposed of.
The most sustainable battery is the one that keeps a working device out of the bin. Our batteries are RoHS-compliant, free from unnecessary harmful substances and fully recyclable via the collection point.
Replace the battery – not the device. This saves resources, money and a lot of electronic waste.
From cell design to delivery – five steps to ensure consistent battery quality.
Branded cells with a data sheet – no ‘black box’ supply chain.
Voltage, capacitance and internal resistance are measured.
Precisely fitted housings, neatly soldered BMS protection circuits.
Functional and capacity tests are carried out before every dispatch.
Packaged in accordance with UN38.3, shipped directly from our warehouse in Germany.
Tested in accordance with international safety standards.
Up to 4 years’ use without any noticeable loss of performance.
Direct from our Berlin warehouse – within 1–2 working days.
All batteries, chargers and charging stations.
Yes, provided they are certified. CELLONIC batteries meet the same international safety standards as original batteries – UN38.3 for transport, IEC 62133 for operation – and are individually tested for voltage, capacity and functionality before dispatch.
A 3-year warranty on all batteries, chargers and charging stations. In the event of a fault, you will receive a replacement or a refund with no hassle.
Dispatched from our warehouse in Germany – usually within 1 to 2 working days. All batteries are packed and dispatched in accordance with UN38.3.
UN38.3 is a globally mandatory test for the transport of lithium batteries. It includes altitude simulation, temperature cycling between −40 °C and +75 °C, vibration, shock and short-circuit tests. Batteries without UN38.3 certification may not be shipped by air, sea or road.
Up to 500 charge cycles without any noticeable loss of performance – this typically corresponds to 2 to 4 years’ use, depending on maintenance, temperature and frequency of use.
If a battery develops a fault within the warranty period, please contact our support team. We’ll replace the battery hassle-free or refund the purchase price – no lengthy checks, no need for an on-site visit.
Over 2,700 models, all UN38.3 and IEC 62133 certified – and with a 3-year warranty.