Rockrider e-ST500 electric mountain bike

Having the right tyre pressure is particularly important on an electric bike. The wheels have a lot of weight on them because of the combination of the motor and bike. To minimise the risk of a puncture while keeping your bike comfortable and retaining grip, we recommend inflating your tyres to 1.8 bar.   If you weigh more than 90 kg, you should increase this pressure slightly.

It takes six hours to charge the battery fully (from 0% to 100%). However, it only takes 3 hours to charge the battery from 0% to 80%.

You must store and charge your battery in a cool (between 10°C and 25°C), dry place, out of direct sunlight. Do not store the battery for long periods if it is empty or below 10% charge as this may result in deep discharge and damage the battery.   You should charge the battery (even if it's not being used) at least once every six months to prevent deep discharge and loss of the battery's capacity. 

No. Lithium-ion batteries have no memory effect and can therefore be charged at any time. We recommend charging your battery regularly to keep it working well.

Yes, the Rockrider e-ST500 mountain bike is an electrical assistance bike. This assistance is only triggered when the user pedals. A motorised system that involves no pedalling is considered to be a moped, with usage restrictions and much stricter safety rules.   A pedalling sensor transmits the pedalling power data to the bike's on-board computer, which triggers the motor. This sensor measures the pedalling power of the user, and provides assistance proportional to the force applied to the pedals. This means that the more pressure you put on the pedals, the more electrical assistance is provided, resulting in a smooth pedalling action without jolts.   The amount of assistance provided can also be adjusted by selecting an assistance mode (1, 2, or 3). The rider must provide greater pedalling force when in mode 1 than in mode 3 to achieve the same level of assistance.

No, it doesn't have a dynamo. Some systems charge the battery when you pedal or brake, but these systems are not very efficient. You would need to ride several dozen kilometres to get just 1 additional km of assistance.

You can buy a new battery from your local Decathlon workshop. Contact your nearest workshop to find out whether they have the battery you need in stock and how long it will take to arrive.

The battery is designed to be used when it's raining but it shouldn't be submerged in water or washed with a pressure washer. The same is true for the display and the other electrical components and cables.   Nevertheless, we recommend sheltering your bike as much as possible when you're not riding it.

Yes, the charger is designed to be connected round the clock. When the battery is fully charged, the charger stops charging. You can tell when it is charged because the LED will turn off.

It's an electrical assistance bike. That means it's entirely possible to ride without this assistance. Of course, the extra weight of the motor system will make cycling a little harder.

Click on the TROUBLESHOOTING tab and you'll find an FAQ where you can get solutions to any difficulties you may be having with your Rockrider e-ST500 electric bike.   You can also use our help form to contact one of our specialist technicians who will be happy to answer your questions and help you resolve any problems.   You can also visit one of our Decathlon workshops, where our cycling experts will take a look at your bike.

When your battery wears out, take it to your local Decathlon store, which will send it to a specialist facility to be recycled.

The bike turns off automatically after a few minutes if it isn't being used. It cuts out after 20 minutes by default. 

The warranty on your battery is for 2 years or 500 charge cycles (1 cycle = 1 full charge + 1 full discharge).

Your electric bike's battery life depends on numerous factors:   > THE LOAD ON THE BIKE: The range will be reduced if the bike is carrying too much weight.   > THE TYPE OF ROUTE: The battery life will be shorter going uphill   > THE TYRE PRESSURE: The battery will last longer with tyres that are inflated to 1.8 bar.   > THE OUTDOOR TEMPERATURE: The range is reduced in colder weather.   > THE ASSISTANCE MODE USED: It is advisable to reduce the power assistance mode when the battery charge is low   > YOUR PEDALLING CADENCE: Like with a classic mountain bike, you need to choose the right gear on steep hills to reduce the effort both you and the motor need to put in.   > WHETHER YOU FOLLOW THE BATTERY CHARGING AND STORAGE INSTRUCTIONS PROPERLY.

Your bike is compatible with the THULE Europower bike rack available in Decathlon stores. This bike rack can hold up to two electric bikes.

When you need to push your bike while walking alongside it, this mode takes some of the strain! Please note: this mode should not be used when riding your bike. It starts, and remains active, while the "UP" button is held down. This mode switches off when you stop pressing the button. Walking mode only works on steep climbs if you push the bike hard enough. If you don't, error 83 will appear. This is designed to protect the motor from overheating. You will need to turn the screen off and back on again to get rid of this error.   Never use walking mode while riding the bike as this may damage the motor.

You can store your battery for up to six months without recharging, without degrading battery capacity.

You can reset the partial distance counter from the "RESET?" screen. Simply hold down " ON / OFF"    

You can access these settings by simultaneously holding down the "UP" and "DOWN" buttons.Press the "ON/OFF" button to select and show the different settings. Press the "UP" or "DOWN" buttons to scroll through the different settings.   SETTING 1 = Wheel circumference SETTING 2 = Tyre width SETTING 3 = Units (km = kilometres / mi = miles)

If you hold down "ON/OFF" and "UP", you will access "999" mode, also known as "engineering" mode.   This is simply a mode we use in the workshop and during production for diagnostics and to check that the bike is working correctly. This mode does not allow you to change anything.

To get the best out of your brakes you'll need to bed them in beforehand. When your bike leaves the shop with its shiny new brake pads and discs, their braking power is weak.   Bedding in takes just 10 decelerations per brake. The bedding-in process involves getting up to a speed of 25 km/h and then applying just one of the brakes firmly to reduce your speed to 5 km/h, without locking the wheel.

The electrical assistance kicks in when you pedal. You need to be applying force to the pedals and to have selected an appropriate assistance mode. 

If the electrical assistance still does not work, follow the instructions below.

 

1. Check the battery charge.

The battery charge level can be checked by pressing the battery power button.

If the first LED blinks or no LEDs light up, the battery is flat. Plug it into its charger and connect to a mains socket to charge it.

 

2. Check that the battery is clean and properly plugged in.

> Check that the battery connectors and housing are clean and in good condition.

> The battery must be correctly inserted into the lower slot (see photo) and the handle must be fully down (you should hear it "click" into place to confirm that it's in correctly).

 

3. Let the system cool down.

In high temperatures, or after a long ride, the electrical system may overheat. Allow the bike to cool down by not using the electrical assistance for several minutes before turning it back on.

 

4. Check that the motor's connector is properly plugged in.

> The motor plug at the top of the frame's left rear stay could be disconnected or damaged.

> Open the connector and check that none of the plugs are bent.

> Reconnect it, taking care to orient the connectors correctly to avoid bending a plug! Use the two arrows etched into each side of the connectors to check the orientation. The two arrows should be identical and facing each other before you insert the connector.

> Once the connectors are fully plugged in, lock the connection in place by turning the knobs until the connection joint is slightly compressed and deformed.

 

Simply push it in so that it is fully in place (the male connector shouldn't be poking out at all). Ensure that the connector is correctly positioned (the arrow indicators should be pointing at each other).

 

4. Turn on the screen by pressing the ON/OFF button.

Turn on the screen by holding the ON/OFF button until the display comes on.

 

5. Select an assistance mode other than 0.

If the mode displayed on the screen is 0, the motor will not deliver any electrical assistance.

Select assistance modes 1, 2 or 3.

 

Once the mode is selected, start pedalling, pressing firmly on the pedals.  Select a higher assistance mode (3 is the highest) if you find it too difficult to pedal hard enough to engage the electrical assistance.

 

If the electrical assistance still fails to engage, please contact us or bring your bike to a Decathlon workshop.