Fatbike battery: capacity, lifespan and tips

For business fatbikes, lithium-ion batteries are the best choice because of their optimal balance of capacity, weight and lifespan. A good business fatbike battery has a minimum of 500-750 Wh capacity for daily use, with factors such as charging cycles, temperature and maintenance determining its lifespan. Battery weight directly affects the riding performance and balance of your fatbike.

1. Which fatbike battery do you choose for business use?
2. What battery types are there for fatbikes?
3. How much Wh capacity do you need for business use?
4. Capacity per use
5. What determines the lifespan of a fatbike battery?
6. How does battery weight affect performance?
7. Charging time and practical tips
8. When should you replace the battery?
9. Why choose STOER Bikes?
10. Frequently Asked Questions

A good fatbike battery is indispensable for business use. After all, you need a battery that is reliable, provides adequate range and lasts for years. But what capacity do you need? And what should you pay attention to when buying one? In this article you will read all about fatbike batteries for business use. So you can make an informed choice that suits your business.

Most fatbikes today run on lithium-ion batteries. This is because this type of battery offers the best balance between capacity, weight and longevity. Lithium-ion cells are light, charge quickly and do not suffer from the memory effect. This makes them ideal for daily business use.

There are also lithium-polymer batteries on the market. These are even more compact and lighter than lithium-ion. Still, they are less commonly used for fatbikes. This is because they are more expensive to buy and more sensitive to temperature fluctuations. So for intensive business use, they are less suitable.

Older technologies such as nickel-metal hydride (NiMH) are still sporadically encountered. These batteries are heavier and have a lower energy density. For modern fatbikes, they are actually obsolete. Most manufacturers focus entirely on lithium technology because of its better performance.

The capacity of a fatbike battery is expressed in watt-hours (Wh). This number indicates how much energy the battery can store. The higher the Wh, the further you can ride on one charge. For business use, a battery of at least 500-750 Wh is recommended.

The energy consumption of fatbikes is higher than regular e-bikes. This is due to the wider tires and extra weight. Count on an average of 8-12 Wh per kilometer in normal use. With headwinds, hills or heavily loaded riding, this can increase to 15-20 Wh per kilometer.

Do you mainly drive short trips in the city? Then 500 Wh is often sufficient for distances up to 40-50 kilometers. Do you need to travel longer distances or drive regularly with a heavy load? Then choose 720 Wh or more. With a 720Wh battery you can reach 80-100 kilometers under normal conditions.

Here is a summary of estimated range by battery capacity:

The STOER UrbanX has a 720Wh battery that allows you to ride 80-100 kilometers. For the CargoX cargo bike, a 960Wh battery is available that offers 60-100 kilometers of range, depending on the load. Both batteries are removable, so you can easily charge them indoors.

Do you mainly drive short trips in the city? Then 500 Wh is often sufficient for distances up to 40-50 kilometers. Do you need to travel longer distances or drive regularly with a heavy load? Then choose 720 Wh or more. With a 720Wh battery you can reach 80-100 kilometers under normal conditions.

Here is a summary of estimated range by battery capacity:

The STOER UrbanX has a 720Wh battery that allows you to ride 80-100 kilometers. For the CargoX cargo bike, a 960Wh battery is available that offers 60-100 kilometers of range, depending on the load. Both batteries are removable, so you can easily charge them indoors.

On average, a fatbike battery lasts 3-5 years with daily business use. The exact lifespan depends on several factors. The number of charging cycles is the most important. A quality battery can handle 800-1000 full charge cycles before the capacity decreases noticeably.

What is a charging cycle? One cycle is equivalent to fully charging from 0% to 100%. Are you charging from 50% to 100%? Then that counts as half a cycle. So with daily use and regular charging, you can ride trouble-free for years.

Temperature plays a big role

Temperature greatly affects the life of your battery. Extreme cold (below 0°C) or heat (above 35°C) accelerates cell aging. Therefore, always store your battery at room temperature, preferably between 10 and 20 degrees Celsius.

In winter, it is best to take the battery indoors. Don't leave it in a cold shed or garage. This extends its life and ensures better performance. In summer, park your fatbike out of full sun to avoid overheating.

The right charging behavior

How you charge also makes a lot of difference to battery life. Don't always charge your battery completely full if you don't have to. A charge level between 20% and 80% is optimal for cell health. Thus, you can extend the life with 30-50%.

Also, never allow the battery to discharge completely. Deep discharge (below 10%) can cause permanent damage. So start charging as soon as you get below 20%. Modern batteries do have built-in protection, but prevention is better than cure.

The ANWB advises to charge your battery regularly, even if you don't use the bike for a while. Are you storing the bike for a longer period of time? Then charge the battery to 50-60% and recharge monthly. This will keep it in top condition.

The weight of the battery directly affects the balance and handling of your fatbike. A heavier battery provides more stability, but makes the bike slower in acceleration. For business use, therefore, look for the best balance between capacity and weight.

The position of the battery makes a lot of difference. A battery that is low in the frame (integrated) gives the best center of gravity and most natural riding feel. Batteries on the rack raise the center of gravity, which can affect stability at higher speeds.

Weight per capacity

With fatbikes, the extra weight of a larger battery is less noticeable than with regular e-bikes. This is due to the robust construction of fatbikes. The difference between a 500Wh and 720Wh battery is about 1-1.5 kg. On a total weight of 25-30 kg, this is relatively small.

Do you need to carry the bike frequently, for example to the office or via stairs? Then a lighter battery is more practical, though. Fortunately, most fatbikes have removable batteries. You can carry the battery separately (usually 3-4 kg) and the bike becomes a lot lighter without the battery.

The STOER UrbanX and CityX both have a removable 720Wh battery that you can charge either in the bike or separately. That offers flexibility for business users. The CargoX has a more powerful 960Wh battery that supports 92Nm of torque for heavy loads.

The charging time of a fatbike battery depends on its capacity and the type of charger. With a standard 2-4 amp charger, full charging usually takes 4-8 hours. Here is a breakdown of charging times by capacity:

At STOER Bikes, the 720Wh battery of the UrbanX fully charges in 6-8 hours. The CargoX's 960Wh battery is full faster, in 4-6 hours. That's because of the more powerful charger included. You can also use a replacement charger order as a spare.

Tips for business charging

For business use, a good charging strategy is essential. Here are some practical tips:

• Charge every night, regardless of charge level - so you start each workday with a full battery
• Do you have multiple bikes? Then make a charging schedule so that all bikes are ready on time
• Consider an extra charger in the office - that way you can recharge between uses
• Charge at room temperature (10-20°C) for best performance
• Always use the original charger or a manufacturer-approved alternative

A fatbike battery needs replacement when its capacity drops below the 70% of the original. You notice this because the range decreases significantly. A battery that used to reach 100 km but now only lasts 60-70 km is nearing the end of its life.

Other signals for replacement are:

• The charging time has increased tremendously (more than 10-12 hours)
• Battery gets very hot while driving or charging
• There is visible damage to the housing
• The battery no longer fully charges

A new 720-960Wh fatbike battery costs between €400 and €800, depending on brand and specifications. Sometimes it is more economical to have only defective cell groups replaced. That costs about €200-€400. Contact your dealer for advice on the best option.

At STOER Bikes, we understand the needs of business users. That's why we offer fatbikes with powerful batteries ranging from 720Wh to 960Wh. These provide enough range for most business applications.

Our UrbanX was voted best fatbike of 2024 by the AD Bicycle Test with a score of 8.5. The 720Wh battery offers 80-100 kilometers of range and fully charges in 6-8 hours. You can easily take the removable battery inside to recharge.

For heavier loads, the CargoX cargo bike the perfect choice. This winner of the German Design Award 2025 has a 960Wh battery with 92Nm of torque. With it, you can effortlessly transport up to 150 kg of cargo or 2-4 children.

"We develop bikes that are made for everyday use," says co-founder Thomas of STOER Bikes. "Our Gates CDX belt drive is virtually maintenance-free and lasts 20,000-30,000 kilometers. Combined with our reliable batteries, you have a bike you can ride trouble-free for years."

All STOER bikes have a 2-year warranty on the battery, motor and moving parts. Want to experience for yourself how nicely our fatbikes ride? Then schedule a test drive at one of our dealers.

How long does it take to charge a 720Wh fatbike battery?

A 720Wh battery fully charges in 6-8 hours on average with a standard 2A charger. With a 4A fast charger, you will shorten the charging time to 3-4 hours. Never charge with too powerful a charger to avoid cell damage.

Can I put a higher capacity battery on my fatbike?

Yes, but pay close attention to compatibility with your motor and controller. The voltage (voltage) must match exactly, usually 36V or 48V. A higher capacity in Wh is not a problem, as long as the physical dimensions and connections match your frame.

What do I do if my battery suddenly gives much less range?

First check the tire pressure and clean the battery contact points. Does the problem persist? Then individual cells may have become defective. Have the battery tested by a specialist - often repair is possible by replacing defective cell groups.

Is it safe to charge my fatbike battery indoors?

Yes, modern lithium-ion batteries are safe for indoor charging if you use the original charger. Provide good ventilation and do not charge on flammable surfaces. Remove the battery from the charger as soon as it is full.

How much does replacing a fatbike battery cost?

A new 720-960Wh battery costs between €400 and €800, depending on brand and specifications. Do you only have defective cell groups replaced? Then you'll pay about €200-€400. Factor this cost into your total cost of ownership for business use.

Can I use my fatbike if the battery is dead?

Yes, but this requires much more power due to the weight of the fatbike (25-30 kg) and the wide tires. For short distances it is feasible, but not comfortable. Therefore, always make sure you have a well-charged battery and possibly take a spare battery with you for longer business trips.