S20 Pro - Battery 48V 18Ah
Frequently bought together
Ordered before 23:59, delivered tomorrow
Home delivery in the Netherlands, Belgium & Germany
Easy to install
14-day returns
Product information
The benefits at a glance
- 48V / 18Ah / 864Wh
- Range up to 75 km
- Can be charged on and off the bike
Suitable for: QMWheel S20 Pro
A separate battery for the QMWheel S20 Pro. This 48-volt battery has a capacity of 18Ah, 864Wh in total. With it, the S20 Pro rides about 60 km on average and up to 75 km on low assist, depending on assist level, weight and terrain.
The battery can be charged in two ways:
In the bike: leave the battery in the frame and connect the charger to the bike. The display shows how full the battery is.
Separate from the bike: unlock the battery with the key and take it inside to charge. This helps the battery last as long as possible. Do not charge in a cold or very hot room.
Do not leave the charger on the saddle while charging, as it can get warm.
Comes with two matching keys.
Specifications: 48V / 18Ah / 864Wh, removable
Fits: QMWheel S20 Pro
(Please check carefully whether the part matches your part to avoid disappointment)
You can easily swap the S20 Pro battery yourself: unlock the old battery with the key, slide it out of the frame and put the new one in until it clicks firmly into place. Then turn the lock closed again. Fully charge the battery before first use; an empty battery is full again in about 6 hours.
Tip: don't leave your battery completely empty for a long time and store it at room temperature in winter; this keeps its capacity up longer. Can't manage it yourself or in doubt? Feel free to message us on WhatsApp at +31 6 82090642 and we'll help you out quickly.
This battery is intended for the QMWheel S20 Pro (48V / 18Ah / 864Wh). Before you order, check that the connector, the lock and the dimensions match your current battery to avoid disappointment. Do you have a different fatbike model? Then choose the battery that belongs to your model. In doubt? Message us on WhatsApp at +31 6 82090642 and we'll take a look with you.
Why choose us?
Delivery across the Netherlands, Belgium and Germany
Fast, reliable home delivery in the Netherlands, Belgium and Germany.
Safe and fast checkout
Pay easily with iDEAL, Wero, Bancontact or credit card in a fully secure environment.
Up to 3-Year Warranty
All bikes include a warranty of up to 3 years on the frame. The battery and all moving parts are covered by a 1-year warranty.
Delivered fully assembled
Your fatbike arrives ready to ride. Hop on right away, no assembly worries!
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Everything you want to know about fatbikes, tuning and our service.
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We specialize in tunable fatbikes and parts. Over 500 happy customers have gone before you. Fast delivery, sharp prices, and customer service that truly thinks along with you.
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Our fatbikes are tunable, and we also supply individual parts to upgrade your fatbike. Please note: tuning is only permitted on private property, not on public roads.
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Yes, a fatbike that complies with current regulations (max. 25 km/h pedal assist and a 250W motor) is fully legal on public roads. Tuned models may only be used on private property.
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As of 2026, stricter rules apply around age, helmet requirements, and vehicle specifications. Check our information page for the latest details.
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You don’t need a driver’s license for a regular fatbike with pedal assist up to 25 km/h. You do for tuned models above that limit. Keep in mind those are only allowed on private property.
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A fatbike is comfortable, fast, and ready for any terrain, from city streets to the beach. Ideal for commuting and for fun. And with our tunable models, you get even more out of it.
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A helmet is strongly recommended for your own safety. From 2026, a helmet requirement will be introduced for certain fatbike categories.
What does tuning a fatbike cost?
A tunable controller costs from 98 euro for the V20 family and the Ouxi models, and 179 euro for the GT2000. Fitting it yourself usually takes less than half an hour. Not sure which part fits your fatbike?
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Wide tyres provide extra stability and comfort. Ideal for daily use and varying surfaces such as cobbles and poor road surfaces.
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No. You do not need a driving licence to ride a fatbike. Fatbikes fall under the rules for normal e-bikes (250W motor and pedal assist). As a result there is no driving licence or helmet requirement.
Our brands at Fatbikeklaar.nl
OUXI Fatbikes
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Customer Reviews
The battery was well packed. Arrived exactly on time.
I use it every day to get to work works just like it should.
The charging time is better than I expected. The manual was clear enough. Simple and good.
Exactly what I needed for the S20 Pro. Clear information on the site.
Old battery out, this one in. Another satisfied customer.
The measurements matched my old battery. The delivery went quickly.
Glad I didn't need a new bike. Neatly handled. That was worth the wait.
The contact points were neat. Clear information on the site.
Connects exactly on the S20 Pro .
The lock works smoothly. I did have to call myself for an explanation.
My S20 Pro works like new again.