Choosing your ChamRider battery: Guide & range calculation

Assess Your Needs

Think about how you will use your e-bike. Will you mainly be an urban rider covering short distances, or are you planning long rides across varied terrain? This will directly influence the type of battery you should choose.

Before purchasing, determine the distance you ride daily. If you regularly cover long distances, opt for 48V or 60V batteries with a capacity of at least 15Ah. For short urban trips, a 24V or 36V battery may be sufficient. The higher the capacity, the longer you can ride without recharging. Consider your riding habits: frequent riders will benefit from a larger battery capacity.

Choosing the right battery is a bit like choosing the size of your car’s fuel tank: it all depends on whether you ride around the block or cross the Alps. Here’s a concise guide to help you avoid running out of power.

1. Understanding Capacity: Watt-hours (Wh)

Forget amp-hours (Ah) for a moment. The true measure of available energy is the watt-hour (Wh). This is what determines your real “fuel reserve.”

The calculation is simple:

Voltage (V) × Capacity (Ah) = Energy (Wh)

For example: A 36V battery with 14Ah provides a capacity of 36 × 14 = 504 Wh.

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2. How to calculate real-world range?

Choosing your ChamRider battery means estimating your riding range. This isn’t an exact science, as it depends on wind, elevation and rider weight.

However, an average consumption is commonly used:

• Average consumption: Around 8 to 12 Wh per kilometer.

The magic formula:

Range (km) = Battery capacity (Wh) ÷ Consumption (Wh/km)

Note: If you weigh around 90 kg and frequently climb hills in “Turbo” mode, expect closer to 15 Wh/km. Lightweight riders on flat terrain can go as low as 5 Wh/km.

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3. Which battery for your daily riding distance?

The table below helps you choose based on your daily round-trip distance (including a 20% safety margin to avoid running out of power):

Daily distance	Typical profile	Recommended capacity
< 20 km	City riding, flat terrain, short commute	300 Wh – 400 Wh
20 to 50 km	Suburban routes, some hills	400 Wh – 540 Wh
50 to 80 km	Long rides, significant elevation	625 Wh – 750 Wh
> 80 km	Bike touring, intensive use	Dual battery (1000 Wh+)

4. Three expert tips to avoid mistakes

1. Plan for extra capacity: A battery typically loses 10 to 20% of its capacity after a few years. Buying a 500 Wh battery today ensures around 400 Wh remaining in three years.
2. Cold weather is your enemy: In winter, range can drop by 20 to 30%. If your ride is borderline in summer, it won’t work in January.
3. Weight matters: Higher capacity means more weight (around 3 to 4 kg for large batteries).

ChamRider batteries

36V, 48V, 52V

15AH, 20AH, 25AH, 30AH, 35AH, 45AH

800 cycles warranty

ChamRider battery box

ChamRider components

ChamRider charger

Consider Battery Capacity

ChamRider battery capacity varies depending on voltage.

For example:

• 24V (0 to 10Ah): Ideal for short distances.
• 36V (10 to 15Ah): A solid balance for everyday commuting.
• 48V (15 to 20Ah) and above: Designed for longer and more demanding rides.

The higher the capacity, the greater the riding range.

Analyze Voltage

52V or 60V batteries deliver superior performance. They are ideal for steep terrain or intensive use. Your motor must be fully compatible with the chosen voltage.

Take Weight into Account

Lithium-ion cells are lightweight and help keep your e-bike agile, but battery weight can still affect handling. Battery placement also impacts the overall center of gravity of the bike.

This factor becomes especially important at high speeds or during jumps.

In general, it is best to position the battery as low as possible.

Consider Battery Size

Check the dimensions to ensure a proper fit on your e-bike. Battery placement on the frame or rear rack should never be overlooked.

The mounting position affects both clearance and freedom of movement while pedaling.

A poorly positioned battery can quickly become a nuisance.

Check Compatibility

Choosing the right ChamRider battery means making sure it is compatible with your e-bike model and motor.

If necessary, always consult the motor manufacturer’s manual or website for specific recommendations.

Consider Your Budget

This may come as no surprise. Evaluate your budget by factoring in both the initial cost and the battery’s lifespan.

A high-quality battery can be a worthwhile long-term investment. Cheap often ends up being expensive.

Warranty and After-Sales Support

Choosing a ChamRider battery also means ensuring the seller offers a solid warranty and responsive customer support.

This protects you against defects and ensures assistance when needed. The purchase source is therefore a crucial factor.

You can often assess a retailer’s service quality through customer reviews.