Skip to Content

Knowledge base › Stella › Phylion SlimFit battery

Phylion SlimFit battery: manual, charging and faults

By Ebikepartners technical service · Updated October 2026 · 5 min read
Item numbers: 43821 · 43836 · 43740 · 55537 · 51015

About this battery

This manual applies to the Phylion SlimFit 1.1, 2.0 and 2.1 batteries you buy from Ebikepartners. Read it carefully before using the battery for the first time and keep it with your bike. That way you get the most out of your battery and it lasts as long as possible.

Do you have a question or are you unsure about something? Contact us before you continue. Also take a look at our page Eleon error messages.

View SlimFit batteries Stella knowledge base


Safety

  • Only use the charger that belongs to the battery.
  • Only charge in a dry, covered space and on a hard, non-flammable surface.
  • Do not leave the battery unattended while charging and do not cover it.
  • Do not charge the battery right after it has been in bright sun or freezing cold. Let it reach room temperature first.
  • Do not open the battery and do not try to repair it yourself.
  • Keep the contacts and the charging port clean and dry. Keep metal objects away from them.
  • Do not expose the battery to open fire, heat above 50 °C or prolonged bright sunlight.
  • Never clean the battery with a pressure washer and do not submerge it in water.
  • Keep the battery and the charger out of the reach of children.


Fitting and removing the battery

Always switch off the bike's system first before you fit or remove the battery.

Removing
  1. Switch off the bike.
  2. Put the key in the battery lock and turn it a quarter turn.
  3. Take the battery out of the holder.
Fitting
  1. Check that the contacts of the battery and the holder are clean and dry.
  2. Slide the battery into the holder until you hear it click into place.
  3. Turn the key back and remove it from the lock.
  4. Check that the battery is firmly in place before you ride.


Charging

Fully charge the battery before using it for the first time, so you get the full capacity. You can charge it on the bike or separately.

  1. Press the power button on the battery. If the lights come on, the battery is active.
  2. First plug the charger into the wall socket, then insert the charging plug straight into the battery's charging port.
  3. While charging, the light on the charger is red. When the battery is full, it turns green.
  4. Remove the charging plug from the battery first, then unplug the charger from the wall socket.

You don't need to run the battery flat first. Charging after every ride is fine. Don't leave the battery on the charger for days once it is full.


Range and lifespan

Range

How far you get on a full battery depends on how and where you ride. Your range is shorter with:

  • a high assist level;
  • headwind, hills and a lot of accelerating;
  • extra weight, such as luggage or a child seat;
  • soft tyres;
  • temperatures of 10 °C or lower.
Lifespan

A battery is a wear part. Each year the capacity drops by about 10% on average, even if you treat it well. That is normal and not a defect. You notice it because your range slowly gets shorter.

This is how to make your battery last longer:

  • Charge it regularly and don't leave it completely empty.
  • Charge and store it at room temperature.
  • Don't leave it in full sun or freezing cold for long periods.


Maintenance, storage and transport

Cleaning

Clean the battery with a slightly damp cloth. Keep the contacts and the charging port free of dirt, sand and moisture.

Not riding for more than a month
  1. Charge the battery to 30–70%. Never store it empty or completely full.
  2. Hold the power button for 25 seconds. The battery then goes into sleep mode and drains more slowly.
  3. Store the battery separately from the bike in a dry place at room temperature.
  4. Check the charge level every 2 to 3 months and top it up to 30–70% if needed.

Ready to ride again? Connect the battery to the charger for a few seconds. This wakes it from sleep mode.

Transporting your bike

Always remove the battery from the holder when you carry the bike on a bike rack or in a car. Take it with you separately in the car. This spares the rack and protects the battery from rain and dirt.


Faults

If there is a fault, LED 5 on the battery lights up and one of the other LEDs flashes for 5 seconds. Look up the pattern below.

LED 5 LED 1


Power button

LED 5 is the light furthest from the power button. LED 1 is right next to it.

FaultLED 5LED 4LED 3LED 2LED 1What to do
Temperature too highOnOffOffOffFlashes 5 sLet the battery cool down to room temperature and try again.
Cell voltage too highOnOffOffFlashes 5 sOffDisconnect the charger and contact us.
Cell voltage too lowOnOffFlashes 5 sOffOffCharge the battery. If the message remains, contact us.
Charging problemOnFlashes 5 sOffOffOffCheck the charger, plug and charging port. Only use the original charger.

Battery not charging? Check whether it is in sleep mode, whether the light on the charger is on and whether the temperature is between 0 °C and 40 °C.

Still stuck? Email support@ebikepartners.com or call +31 85 073 7931.


Warranty and disposal

Warranty

You get 2 years of warranty on the battery from the date of purchase. Your statutory rights also continue to apply. Keep your proof of purchase.

Did you take out the warranty extension when you bought the battery? Then you get 3 years of warranty. You can find the conditions on the page battery warranty extension.

Normal capacity loss of about 10% per year is wear and is not covered by the warranty. Damage caused by a fall, water, opening the battery or using a different charger is not covered either.

Report a problem via support@ebikepartners.com. Include your order number and a short description.

Disposal

Never throw an old battery away with household waste. Take it to a bike shop, a recycling centre or a battery collection point. That way it is recycled responsibly.


Technical data

SpecificationValue
ManufacturerPhylion
Suitable forSlimFit 1.1, SlimFit 2.0 and SlimFit 2.1
Cell typeLithium-ion
Nominal voltage36 V
CapacityDepends on the chosen type
WeightApprox. 3 kg, varies by type
Charging temperature0 °C to 40 °C
Storage for more than a month30–70% charged, dry, room temperature
ChargerSold separately, specific to each type
Charging timeDepends on the charger and the battery capacity


Can't figure it out?

Our technical service is happy to help. We usually respond within 24 hours.

Contact us Find a service point

Popular Stella parts

Your dynamic snippet will be displayed here... This message is displayed because you did not provide enough options to retrieve its content.

QualityQuality

We do things right or not at all. What we deliver is reliable, safe, and sustainable.​

ServiceService

With personal service and attention to detail, we ensure that you and your customers receive genuine assistance.

AvailabilityAvailability

We ensure that parts are available. This means that every e-bike can continue to ride for at least eight years.



Become a service partner of Ebikepartners

As a service partner, you gain access to our complete range, training, and technical support. 
This way, you help your customers get on their way faster!


Become a service partner I am a private individual


A SELECTION FROM OUR RANGE

Brands

Stella
Amslod
Vinka
Bafang
Phylion
Ananda

Subscribe to our newsletter

Receive all the latest news, blog posts, and product updates from our company directly in your inbox.

Thanks for registering!