Frequently Asked Questions

We are a 100 percent subsidiary of ZF Friedrichshafen AG. ZF is a global player in technology and provides drive systems for passenger cars, commercial vehicles and industrial technology. Here you can find additional information about the ZF Group.

No, we don't produce e-bikes, but we provide drive systems for leading bike manufacturers. These systems are built using automotive standards.

The 48V-System has a higher torque which means it pushes harder from the start. The power lasts longer and it is more efficient. Aside from that, it provides a better connection to more and more upcoming devices (lights, displays, smartphones etc.). 48V-systems are less sensitive to temperature, the battery lasts longer in lifetime and there is a higher possible top speed.

No, the drive system is maintenance free and protected from water and dust. However you should remove thick layers of dust or mud from the drive system before any ride.

If you detect any malfunction, please go to your dealer immediately and they will help you.

Possible reasons:

• the power supply to the control unit is interrupted
• you are driving 25km/h or faster
• you don’t use the pedals or the walk assistance
• the battery is empty
• the drive unit support is disabled
• the speed sensor is dislocated, malfunctioning or lost.

The display does not show any speed. There could be a malfunction with the speed sensor. Check magnet position.

The display does not show any speed. There could be a malfunction with the speed sensor. Check magnet position.

No, you can not tune the drive unit. Every attempt will be recognized and logged by the system.

The following handlings of the system result in warranty expiration:

• not using as intended, improper maintenance
• not assembling as intended, technical changes, unauthorized opening, improper dismantling
• wantonly damage
• storage below -25°C or above 60°C for several days
• using tools not confirmed by the manufacturer
• cleaning with a high pressure cleaner or a steam cleaner
• submerging in water or another liquid
• overloading (e.g. misappropriation)

Please also refer to the bike operating manual.

An e-bike battery typically has a permissible usage temperature of 0 to 45 degrees when charging. A temperature range of -10 to +50 degrees is considered permissible during the unloading process. It should be noted that at very low temperatures the internal resistance of the battery increases and as a result less usable capacity is available than at summer temperatures. Up to 40% of capacity may be lost or unavailable due to cold. However, this effect is only temporary and is reversed at the next temperature rise.

Please refer to your authorized dealer. It can provide qualified support to you in the proper disposal or can take back the battery.

The battery leaks only if the outer shell is damaged. In this case electrolytes may leak that can irritate the skin. Do not let any leaked liquids touch your skin under any circumstances. If you had skin contact with irritants, rinse with water immediately. Please go to your doctor if skin problems persist.

Damaged or probably damaged batteries must not be charged under any circumstances. Do not use damaged chargers. Please contact your authorized dealer for further instructions.

No, lithium-ion batteries have no classic memory effect. We recommend to fully charge the battery if you plan to use it for the first time or if you haven’t used it for some time and then drive until it is fully empty. However these 1 oder 2 charging cycles are only needed to calibrate the Battery-Management-System (BMS).

We don’t recommend buying a used battery because you don’t know the history of it and the capacity might be low. Also, it might have undiagnosed damages which pose a potential safety risk. Your authorized dealer can check the battery.

Please read the charger manual for instructions.

The number of charging cycles shows you how often the battery can be recharged until there is only 80% of the original capacity left. If you charge a battery from 0% to 100%, this is a complete charging cycle If you charge the same battery from 10% to 60%, then ride your e-bike until you have 30% capacity left and charge it again until you reach 80%, the partial charging cycles are summed up. In this example the battery has also gone through one complete charging cycle.

Not at all. It is ideal for a lithium ion battery to use it between 30% and 80% capacity.

Many customers want to use the full capacity.

A BMS is an important component of the battery system and ensures that it is used the best. It has multiple functions: monitor switch-on and switch-off signals of the system, prevent over- and undervoltage, carry out cell calancing, display available capacity, communicate with other system components, control temperature, log cell aging.

If you don’t use your e-bike for some time, you have to make sure that the battery is not deep discharged. This means that the battery must not discharge below the final discharge voltage (“battery is empty”) because the cells might be permanently damaged. A lithium-ion battery can discharge up to 2% per month without being used. Some batteries have a deep sleep mode that prevents self discharge of higher percentages. Ideally you store the battery with a capacity of approx. 30-50%. Before the next use, the battery should be fully charged again. This helps the BMS to recalibrate and calculate capacity.

The e-bike battery should be stored frost free and cool. The ideal storage temperature is approx. 10 degrees Celcius. This termperature slows down the disintegration reaction and therefore aging of the cells. Storing in a dry basement for example is a good solution.

The battery pack for your e-bike is a low-maintenance product that requires little attention. Dirt on the casing can be removed with a damp cloth. o not use a high pressure cleaner or steam cleaner because the water pressure will damage the seals and water will destroy the electronics. In this case warranty will expire.

If you take your bike on a vacation, you can transport your e-bike on a special rack on your car as you would any other bike. If the battery is removeable, please transport it in your car and make sure that is save from short circuit, dampness and direct sunlight. Rain on the street my impact your battery pack similar to a high pressure cleaner. Make sure to cover the exposed contacts respectively the battery pack to avoid damage. Important to know: lithium-ion-batteries for e-bike are not allowed to be sent without special packaging and labelling via carrier or postal service.

During the yearly inspection you should also let the dealer service your battery pack. They can update the BMS to make sure that the battery is perfectly adjusted to the system. The dealer can use special equipment to check battery capacity usage and make sure it isn’t damaged in any way.

Yes. The integrated BMS makes sure that the end-of-charge voltage isn’t exceeded. Maintaining the connection however uses a little electricity and doesn’t have any further advantages so you should disconnect the charger from the power supply system when the battery is full.

You can use the charger outside if you consider a few points: the charger mustn’t become wet or damp in any way. This is also the case for charging in a basement or garage etc. There is danger for short circuit! Also intensive sunlight has to be avoided because the allowed temperature range may be exceeded.

Yes, you can.

Your e-bike is probably the cheapest form of motorized transportation today. Fully charging a 500 Wh battery costs around 15 cents (assuming an electricity price of 30 cents / kWh).

A modern lithium-ion-battery has an average lifespan of approx. 4-6 years. This can vary significantely due to care and way of usage. The lifespan lifespan is determined by the battery aging which is a mixture of calendar years, cycle stability and average temperature. Storing alone leads to a loss of capacity of 1-2% per year. The exact loss depends on the cell chemistry and average temperature. A 10 degrees raise of average temperature during a year doubles the disintegration and dissolution speed which cuts the lifespan in half. o, the lifespan also depends on where you life respectively where you store your bike for most of the time. Also, using half-cycles can prolong the battery lifespan significantly.

This is totally up to your expectations regarding range. If you initially had a range of e.g. 80 km and now have only 48 km, your main route to work however is only 10 km, you can still use your battery for a long time.

Your battery may the discharged. Remove the battery from the e-bike and press the start button. If the LED doesn’t light up, the battery is deep discharged. Please refer to your authorized dealer.

Yes, you yourself can update the software for SIGMA remote and display via the SIGMA app.

Yes, the APP only works after registering and establishing a connection with a bike with Sachs RS motor.

To use the APP, you need an up-to-date smartphone that supports at least iOS 14 or Android 8. To use it, you need to create a ZF Micro Mobility Account. In addition, your bike with a Sachs RS drive must be equipped with a Sigma EoX 500 remote that has at least the firmware version 1.2.14.

If all the requirements are met, all you have to do is switch on your bike andselect your bike from the list of possible connections in the APP.

The firmware can either be updated by your specialist dealer with the help of our service tool,or by the end user with the help of the Sigma EoX App. Sigma EoX APP requires further registration to update. After the registration you can connect the remote under the settings in the “My Bike” category and then perform the update after tapping the remote under the “Firmware Update” item.

Yes, the two APPs can be operated in parallel.

Please write an e-mail to freivpr@mszvpebzbovyvgl.pbz

You can deactivate the automatic recording in the settings under “Navigation”. It is still possible to start the recording manually.

A long tap on the respective display element that you want to change opens a selection of different values that you can display.

If the navigation is active or span a route recording has been started, the app remains active in the background and processes location data. To avoid background activity, please stop navigation before closing the APP or pause the route recording.

If you have forgotten your password, you can click on “Forgot password” in the login screen. You will then be redirected to the browser where you will be asked to enter your email address. Then please click on “Send verification code”. You will now receive a verification code by email, which you can now enter. Then please click on “Verify Code”. You can now assign a new password using the “Continue” button. Click “Continue” again to finish.

Your password has now been changed and you can use it to log in to the APP.

If certain other APPs are installed on your iPhone,they can be exclusively entitled to .gpx files, so there is no way to import them directly. However, you can use the “Files”app or other applications that share .gpxfiles via the share icon, and then select “SACHS Ride” as the application in the dialog.

If you experience problems during registration, please write an e-mail to freivpr@mszvpebzbovyvgl.pbz