Choosing the right drive technology is one of the most important decisions you have to make when purchasing or modernising your fleet. In modern intralogistics, two dominant systems face each other: the proven lead-acid battery and the advanced lithium-ion technology. Both systems have their specific advantages and disadvantages, but which solution is the most economical and efficient for your operation in Switzerland? In this comprehensive comparison, we highlight all relevant aspects – from charging time and service life to the Total Cost of Ownership over a period of five years. Find out whether a lithium battery forklift is the better choice for your specific requirements or whether the classic lead-acid variant still has its justification.
Charging times and availability in everyday operations
A decisive factor for productivity in your warehouse is the availability of your industrial trucks. This is where clear differences between the two battery technologies become apparent. Lead-acid batteries typically require between eight and twelve hours for a full charging cycle, followed by a cooling phase lasting several hours. This means that a forklift in multi-shift operation often has to be equipped with replacement batteries, which not only requires additional investment but also ties up valuable working time for the battery change.
In contrast, a lithium battery forklift offers enormous advantages through the possibility of opportunity charging. During short breaks, for example during the lunch break or at shift changes, the battery can be charged to up to 80 percent of its capacity within 30 to 60 minutes. A full charging cycle usually takes only one to two hours. A cooling phase is completely eliminated. For companies with intensive two- or three-shift operations, this means a significant increase in vehicle availability and the elimination of expensive replacement batteries.
Service life and cycle stability
The service life of a battery is a central aspect for long-term economic efficiency. With optimal care and maintenance, lead-acid batteries achieve an average of around 1,200 to 1,500 charging cycles. With this technology, a charging cycle is often counted even if the battery is only partially discharged and recharged. Therefore, it is important with lead-acid batteries to discharge them as completely as possible before connecting them to the charger again, so as not to unnecessarily shorten their service life.
Lithium-ion batteries play in a completely different league. They easily achieve 3,000 to 5,000 full charging cycles before their capacity drops to a level that is no longer sufficient for intensive use in the forklift. In addition, opportunity charging does not harm lithium technology – on the contrary, it is even beneficial for the service life of the cells. This makes the lithium battery forklift an extremely durable and robust solution that often exceeds the service life of the forklift itself.
Total Cost of Ownership (TCO) over 5 years
When purchasing a new forklift or replacing a battery, looking at the pure purchase price is often deceptive. The Total Cost of Ownership (TCO) over a period of five years, for example, provides a much more realistic picture.
The initial investment costs for a lithium-ion battery in Switzerland are typically two to three times as high as for a comparable lead-acid battery. A lead-acid battery may be cheaper to purchase, but it incurs considerable costs during ongoing operation. These include the regular effort for topping up distilled water, cleaning the battery and the battery troughs, and maintaining the charging infrastructure. In addition, the energy loss when charging lead-acid batteries is relatively high at up to 30 percent.
Lithium-ion technology, on the other hand, is absolutely maintenance-free. There are no personnel costs for battery care. Furthermore, the efficiency during charging is significantly higher at over 95 percent, which has a noticeable effect on energy costs given the current electricity prices in Switzerland. If you look at the TCO over five years, the higher acquisition costs of a lithium battery forklift usually pay for themselves after just two to three years, especially in multi-shift operations. At staplerboss.ch, we will be happy to advise you individually and calculate the TCO for your specific application in Swiss Francs (CHF).
Space requirements and infrastructure
The space required for the charging infrastructure is an often underestimated cost factor in Swiss logistics centres, where every square metre is expensive. Due to the outgassing of hydrogen during the charging process, lead-acid batteries require special, well-ventilated battery charging rooms. These rooms must meet strict safety requirements, have acid-resistant floors and be equipped with special extraction systems. In addition, space is required for storing replacement batteries and the equipment for changing batteries.
Lithium-ion batteries do not outgas during charging and do not contain liquid acid. Therefore, the chargers can be set up decentrally and directly in the work areas – exactly where the forklifts are parked during breaks. This not only saves valuable storage space that can be used productively elsewhere, but also reduces unproductive travel times to a central battery charging room.
Safety and occupational health and safety according to SUVA guidelines
The safety of your employees is the top priority. SUVA (Swiss National Accident Insurance Fund) sets clear requirements for the handling of industrial trucks and their batteries. When handling lead-acid batteries, there are risks from contact with corrosive sulphuric acid, for example when topping up water or in the event of damage. In addition, there is a risk of oxyhydrogen gas formation during charging, which requires strict fire protection measures. The manual changing of heavy lead batteries also entails a high risk of injury from crushing or overloading the musculoskeletal system.
Lithium-ion batteries are self-contained, maintenance-free systems. There is no danger from leaking acid or explosive gases. Modern lithium batteries are equipped with an integrated Battery Management System (BMS) that continuously monitors parameters such as temperature, voltage and current and automatically switches off the battery in the event of deviations. This ensures the highest level of safety in daily operation and makes it much easier to comply with SUVA guidelines.
Environmental aspects and sustainability
Sustainability and reducing the carbon footprint are becoming increasingly important for Swiss companies. Lead-acid batteries contain toxic lead and corrosive sulphuric acid. Although the recycling system for lead batteries is very well established and the recycling rate is high, the materials still pose a significant environmental risk if handled improperly. In addition, the lower energy efficiency leads to higher electricity consumption and thus to higher CO2 emissions, unless pure green electricity is used.
Lithium-ion batteries are significantly more energy-efficient. The lower power consumption during charging not only saves your budget, but also the environment. In addition, they have a much longer service life, which reduces resource consumption over the years. The recycling of lithium-ion batteries is technologically more demanding than for lead batteries, but here too, new, efficient recycling processes are continuously being developed in Switzerland and Europe to recover valuable raw materials such as lithium, cobalt and nickel.
Decision matrix: Which technology suits you?
To make your decision easier, we have summarised the most important criteria in a compact overview. This matrix will help you find the optimal solution for your operation.
Lead-acid battery is ideal for:
- Single-shift operation with low to medium utilisation
- Applications where there is sufficient time for long charging cycles (overnight)
- Companies with a limited budget for the initial investment
- Operations that already have a modern and well-equipped battery charging infrastructure
- Operations in extremely cold environments (with appropriate precautions), as lead-acid sometimes reacts more robustly here
Lithium-ion battery is ideal for:
- Multi-shift operation (two or three shifts) with high utilisation
- Operations that want to use opportunity charging during breaks and have no time for battery changes
- Companies that want to reduce their TCO (Total Cost of Ownership) in the long term
- Cramped warehouses where a separate battery charging room cannot or should not be set up
- Operations with high requirements for hygiene and cleanliness (e.g. food or pharmaceutical industry)
- Companies that want to minimise the maintenance effort for their fleet
Conclusion
The decision between lead-acid and lithium-ion is not a question of "good" or "bad", but depends largely on your individual application profile. For light single-shift operation, the classic lead-acid battery can still be the most economical solution. However, as soon as your company works in a multi-shift system, there is a lack of space or you want to drastically reduce ongoing operating costs, there is hardly any way around modern lithium-ion technology.
The higher initial investment in a lithium battery forklift usually pays for itself within a few years due to the elimination of maintenance costs, lower energy costs and the saving of replacement batteries. In addition, you benefit from higher vehicle availability and improved safety standards in accordance with SUVA guidelines.
We at staplerboss.ch in Amriswil, Thurgau, will be happy to support you with this important decision. Our experts will analyse your intralogistics processes, calculate the individual total costs and work with you to find the drive technology that moves your forklift most efficiently and economically. Contact us for a non-binding consultation.
Frequently Asked Questions (FAQ)
Can I convert my existing forklift to lithium-ion technology?
Yes, in many cases a conversion (retrofit) from lead-acid to lithium-ion is possible. There are special lithium-ion replacement batteries that are adapted in shape and weight to the old lead-acid troughs. However, it must be checked whether the vehicle weight must be compensated for by the lighter lithium battery in order to continue to ensure the stability of the forklift. The experts at staplerboss.ch will be happy to check the feasibility for your specific models.
How safe are lithium-ion batteries in forklifts really?
Modern lithium-ion batteries for industrial trucks are extremely safe. They generally use lithium iron phosphate technology (LiFePO4), which is considered to be particularly thermally stable and not prone to spontaneous combustion. In addition, the integrated Battery Management System (BMS) permanently monitors all critical parameters and switches the system off immediately in the event of anomalies. They thus meet the highest safety standards and support compliance with SUVA requirements.
Are there government subsidies for switching to lithium-ion forklifts in Switzerland?
Currently, there are no comprehensive, direct government subsidies in Switzerland exclusively for the purchase of lithium-ion forklifts. However, cantonal or regional support programmes to increase energy efficiency or reduce CO2 emissions in companies may apply. In addition, some energy suppliers offer support programmes. It is worth clarifying this individually in advance of a major investment.
