Frequently asked questions about our eWheel loaders

The electric runtime varies depending on many factors such as individual driving behavior, type of use and environmental conditions. The achievable runtime without intermediate charging varies between approx. 4 hours and 2 hours.

Type of use: (short vs. long distances, working with bucket vs. working with fork, regeneration phases vs. continuous operation, etc...). The type of use has an enormous influence on the actual runtime. Without taking other factors into account, the runtime can therefore vary by 50% depending on the type of use.

Surface condition: (asphalt, unpaved gravel road, predominantly soft surface, very soft surface). The softer the surface, the higher the power requirement. In addition, slippage increases with soft ground. Both factors therefore influence the running time of the electric wheel loader.

Type of terrain: (continuous flat, slight inclines, steep inclines). Driving on slopes increases the power requirement and therefore influences the running time of the machine.

Driving behavior: Proactive driving has a positive effect on the runtime. Rapid acceleration of the machine leads to extremely high energy consumption of the drive system motor. The running time can be positively influenced by avoiding rapid acceleration or by proactive driving behavior.

Outdoor temperature: The outdoor temperature also has an influence on the running time of the machine. Especially in the winter months, we recommend charging and storing the wheel loader at room temperature. For example, in a garage or machine hall. This keeps components such as axles, transmission or the hydraulic system warm - this also influences the running time.

Auxiliary consumers: (heating, opt. oil cooler, radio, lighting). The heater is by far the largest auxiliary consumer, since it is operated directly from the battery and not via the waste heat of the engine, as is usual with combustion engines. Thus, the influence on the running time is relatively high. For this reason, we recommend parking the vehicle in enclosed and heated buildings when outside temperatures are low, if possible. This way, the heater only has to maintain the temperature of the cab instead of heating it up completely. The other auxiliary consumers do not have an enormous influence on the running time, but should also be taken into account for realistic consideration.

Use of the service brake: As soon as the operator takes their foot off the accelerator pedal, the drive system switches to recuperation (energy recovery). This means that the kinetic energy of the wheel loader is converted into electrical energy and recovered. During the recuperation phase (vehicle coasting), electrical energy is fed back into the battery. Recuperation is not possible when the service brake is applied.

The all-electric Kramer wheel loader is equipped with an integrated 230 V alternating current (AC) battery charger with a charging power of approx. 3 kW. Charging can be carried out either with the 5-pin 16 A CEE plug (red) or by means of the 3-pin CEE 16 A plug (blue) (both plugs are included in the standard scope of delivery).

Yes. Intermediate charging allows the battery to be recharged at any time, such as during a break. The AGM battery used has no memory effect. This can significantly extend the duration of use per day and thus the runtime.

With the current cost of electricity, it is difficult to predict how much a battery charge will cost.

At an electricity price of 30.00 cents per kilowatt hour, a complete battery charge costs €7.76. Stand 2021

With the onboard battery charger (220-240 V), the battery is charged to 100% in 8 hours. After only 5.8 hours, the battery is charged to 80% again.

The AGM battery is a lead-acid fleece battery with the characteristics of a lithium ion battery and has been specially developed for applications with high performance requirements. Typical application examples include use in heavy-duty vehicles where simultaneous load demands such as lifting, lowering and accelerating occur continuously. The AGM battery is a sealed and maintenance-free battery system. Advantages at a glance:

• Very good price-performance ratio

• Completely maintenance free system

• No water refilling necessary

• Problem-free intermediate charges possible

• Long service life

• Coolest drive energy system (lowest efficiency loss due to heat)

• Efficient charging - 416 Ah via 230V charger in 8 hours

• Sturdy and reliable

  • The significantly higher weight of an AGM battery can be used efficiently as a counterweight. With a lithium ion battery, additional counterweights must be installed.
  • Lithium batteries have a lower heat capacity which makes active cooling necessary at high discharge currents. Active cooling of the AGM battery is not necessary.
  • With the same battery life expectancy, lead-acid batteries have a better price-performance ratio.
  • The chargeability and current delivery capability of the AGM battery at low temperatures is significantly better than that of lithium cells.
  • In terms of safety, lithium batteries are difficult to deal with. Incorrect handling and damage to cells in particular pose a high risk (fire hazard). Appropriate protective housings must be used to avoid hazards associated with lithium cells.

The AGM battery is equipped with lifting brackets and forklift pockets. Battery replacement takes about 30 minutes. A replacement battery including charger can be ordered from Kramer sales partners.

When the last LED of the battery charge level indicator starts to flash, the last stage of the so-called derating mode is activated after a short time. In derating mode, the torque and also the driving speed are reduced - in extreme cases to as little as 3 km/h. If the vehicle is operated near a 3-pin or 5-pin 16A CEE socket, the vehicle can be operated until the speed is reduced to 3 km/h. The drive is not switched off completely. As soon as the speed has been reduced to 3 km/h, the battery must be charged immediately, otherwise the battery will be deeply discharged. Deep discharge must be avoided at all costs.

According to the Battery Ordinance, battery manufacturers are legally obliged to take back your used batteries. In addition, you have the option of taking the batteries to a designated recycling center and paying for their disposal yourself. For more detailed information, please contact your Kramer sales partner. AGM batteries and their contents can be recycled up to 65%. If required, you as a customer will receive a written declaration on the proper recycling of the used battery.

Any government grants will depend on your location. Different state governments have different rules regarding e-mobility. For more information, please contact your Kramer sales partner.

Yes. The warranty period is a maximum of 1,000 operating hours or twelve months from handover by the sales partner to its first customer, but no longer than 18 months from factory delivery. Furthermore, the warranty period can be extended up to 3 years or 3,750 hours. For more information, please contact your Kramer sales partner.

In principle, an electric wheel loader must also be serviced at regular intervals. Nevertheless, the electric wheel loader has the following advantages: Fewer components and fewer maintenance points: Whereas some typical components and combustion engine fluids are omitted (these include engine components such as air, fuel and oil filters, V-belts, but also fluids which have to be replaced at regular intervals), the special elements of an electric wheel loader are included in the maintenance list. This includes the annual single voltage measurement of the battery cells as well as an insulation measurement. In addition, the charging equipment and cable connections as well as the condition of the battery are examined as part of the general maintenance.

No, with the Kramer eWheel loader you can work on site completely emission-free. If you charge your electric vehicle with renewable energy, you can minimize your CO2 footprint even further.