State-of-the-art battery storage repairs and reconditioning for business customers

The aim of the diagnosis is to provide a repair recommendation and to estimate the costs and duration. In addition, Medimobility can also carry out a warranty claim review for its B2B customers.

The diagnosis is free of charge if a repair is commissioned or a replacement battery is purchased through Medimobility. Individual terms are available for B2B customers with larger quantities.

Most e-bike batteries can be repaired quickly and cost-effectively. Repair processes can be defined and standardised in advance together with B2B partners. As many customers value original spare parts, Medimobility offers storage services for these. Medimobility uses only high-quality brand-name cells for all repairs.

E-bike batteries are mostly based on lithium-ion technology and have a capacity of 300–700 Wh, often 500 Wh. They use 18650 or 21700 cells, combined to 36 V or 48 V. High-quality models rely on brand-name cells (Samsung, Panasonic, LG) and a BMS for charging, discharging and safety protection. The service life is around 500–800 charging cycles.

Weighing between 2.5 and 4 kg, the batteries are usually removable and take 3 to 6 hours to charge. Proper use and occasional maintenance can significantly extend their service life and improve their environmental performance.

Due to their design, bicycle batteries are ideal for repair, analysis and regular maintenance – especially for fleets, resorts and leasing providers.

E-scooter batteries almost always use lithium-ion technology (18650/21700 cells, e.g. Samsung, LG, Panasonic) and offer 1.5–4 kWh capacity – sufficient for a range of 40–100 km. Depending on the model, the nominal voltage is 48–72 V. High-quality batteries achieve 500–1,000 charging cycles (approx. 3–6 years) and are protected against overcharging, deep discharge and overheating by a BMS. Regular maintenance further increases their service life.

Since e-scooter batteries usually have a high voltage limit of 60 V DC, they should only be checked by qualified personnel. Repairs are particularly worthwhile here, as the components are significantly more expensive than those used in e-bikes. Regular maintenance is especially important for company fleets, delivery services and leasing providers.

Electric motorcycle batteries provide the energy for long ranges and powerful performance. They are almost always based on lithium-ion technology with 21700 or 18650 brand cells (Samsung, LG, Panasonic) and offer a capacity of 6–20 kWh. The nominal voltage is in the high-voltage range from 72 V to over 300 V. High-quality batteries achieve 800–1,500 charging cycles, corresponding to a service life of 5–10 years – controlled and protected by an integrated BMS.

As electric motorcycle batteries are well above the 60 V high-voltage limit, they may only be inspected by qualified personnel. The high-quality components make repairs particularly attractive. Regular maintenance is also worthwhile for B2C customers.

Electric car batteries range from compact to highly complex. They are the heart of modern electric vehicles and have a decisive influence on range, performance and charging speed. Most electric car batteries are based on lithium-ion technology, often with NCM or NCA cell chemistry, in the form of pouch, prismatic or cylindrical cells (e.g. 18650 or 21700).

Typical performance characteristics:

• Capacity: from 10–20 kWh for compact L7e vehicles to 60–120 kWh for full-size cars
• Voltage: mostly 300–800 V high-voltage systems
• Cycle life: approximately 1,000–3,000 full cycles, depending on chemistry, usage and temperature management
• BMS monitors and controls charging and discharging processes, balancing and safety systems.

Light electric vehicles in the L7e class (e.g. Microlino, Renault Twizy) use compact, modular batteries that are much easier and cheaper to repair – for example, when replacing the BMS or cells. Mid-range and luxury cars, on the other hand, use large high-voltage traction batteries (hundreds to thousands of cells, complex cooling, safety-critical electronics), which require close cooperation with the manufacturer.

Maintenance of these vehicles is crucial, as the battery accounts for up to a third of the vehicle’s value. Repairs and analyses are also possible, but require specific manufacturer expertise.

Maintenance of energy storage systems in e-mobility is advisable above a certain size or quantity (e.g. as a fleet provider, fleet manager, lessee or lessor).

Battery maintenance can be broadly divided into preventive maintenance, corrective maintenance and optimisation. At Medimobility, corrective maintenance tasks fall under the heading of repairs.

Preventive maintenance services:

Optimisation services: