Guided by shared concepts and rules, Dongguan Chamrider Technology Co., Ltd. implements quality management on a daily basis to deliver down tube battery that meet customer's expectations. Every year, we establish new quality targets and measures for this product in our Quality Plan and implement quality activities on the basis of this plan to ensure high quality.
Chamrider Battery products have helped win more fame for us. Based on the feedback from customers, we conclude that there are several reasons. Firstly, thanks to the exquisite craftsmanship and unique style, our products have attracted an increasing number of customers to visit us. And, our products have helped customers gain more benefits at a surprisingly skyrocketing speed. Our products have been spreading to the market and our brand becomes more influential.
We work hard to provide unparalleled levels of service and prompt support. And we offer down tube battery and other products listed at Chamrider Battery with the most competitive MOQ.
Electric bicycles are fantastic, but they are also an investment, and a crucial component of that investment is the battery. Unfortunately, just like your old phone now needing to be charged every five minutes, electric bicycle batteries inevitably degrade over time and lose some of their capacity. If you want to learn how to keep your electric bicycle battery healthier for longer, check out our expert tips and advice.
1. Pedal effectively and use gears
The fewer times you charge and discharge the battery, the longer its lifespan. It makes sense to try to find a balance of power during each ride, meaning pedal wisely.
Electric bicycle motors are designed to work with a normal to high pedaling cadence; they're most efficient and consume the least amount of energy. Bosch recommends keeping your cadence above 50, avoiding slow grinding, and making full use of the lovely gear distribution that comes with your bicycle.
Similarly, make full use of the modes provided with your electric bicycle—ideally, you want to use the lowest power setting you can handle to seek greater range, but not if it slows down your cadence to a crawl.
2. Avoid full charging and discharging of the battery
Batteries themselves have built-in computer chips to regulate their output and charging. This means they will never completely deplete and ruin themselves in the process.
However, performing full charges and discharges on the battery every time you go out does impose a higher load on the battery. So, if you consistently go out with a fully charged battery and then bring it back inside, you'll need to rinse and repeat. Instead, try to stop riding before the battery is completely drained on each ride... easier said than done.
3.Charge the electric bicycle battery at room temperature
Now, this is a big one. Charging the battery at room temperature is crucial, with the ideal temperature being between 10-20°C (50-68°F), definitely not below freezing. ChamRider advises charging the battery indoors, in a dry place with a smoke detector (lithium-ion batteries have proven to be very safe, but in extremely rare cases, they can catch fire if short-circuited). Charging outside of this temperature window will result in reduced range and shorter battery lifespan, as colder objects have increased resistance, causing a decrease in electrical capacity.
Riding for a few hours in cold weather is not bad for your battery since it will reach a certain temperature regardless of the environmental conditions. However, starting from warm is important. This means that if you're driving a van, place it in front of you and the heater, and put it on the bike immediately before riding. Also, avoid taking it directly from a cold shed; warm it up inside beforehand.
During the summer, don't leave it in direct sunlight either, just like your phone, as high temperatures increase the load on the battery. In theory, if the battery overheats, the motor will automatically shut off, just like on a laptop, but we haven't experienced such a situation.
Avoid fully depleting or fully charging the battery
If you haven't ridden your electric bicycle for a few days, weeks, or months, it's important not to leave it fully charged or completely drained. Bosch recommends keeping it at around 30-60% capacity, while Shimano suggests keeping it at 70%. Recharge the battery every 6 months, and of course, fully charge it before riding again.
Avoid excessive water usage around the motor and battery area
Clean carefully, avoid high-pressure cleaning
Bosch suggests removing the battery before cleaning the bike, while Shimano recommends keeping it in place to protect the terminals. Shimano's advice may be more practical in real-world application as there can be a significant exposure of wires splashed with mud and water if the battery is not installed.
We believe the best approach is to gently clean it vertically with a hose and sponge, then let it dry completely before opening it up.
Tips and Tricks
ChamRider suggests that if there is dirt or grime on the battery terminals (not the battery itself), you can clean them with a soft, dry brush or cotton swab.
Finally, reach out to the dealer who specializes in your motor and check the status of your battery. They will be able to inform you about the battery's condition and whether you're in a long-term storage situation or if there is any equipment damage.Four
Electric bicycle questions you're afraid to ask:
1. Why does the charger get hot?
Converting the UK's 240V voltage to 36V for ChamRider results in some energy loss in the form of heat, typically around 10%, according to ChamRider. Charging automatically shuts off when the capacity is reached, so there is no overcharging or increased load.
2. Can battery manufacturers open the casing and replace a faulty battery like Tesla does?
No, it is not possible because the batteries need to be perfectly matched to avoid overcharging or over-discharging. It is technically feasible but a complex process, which would cost more money – acceptable for a £100,000 car but not for a £5,000 electric bicycle. As a point of interest, the Bosch PowerTube 625Wh battery has 50 individual cells inside.
3. How many cycles can the battery endure?
It depends on how you treat it. ChamRider states it can be charged up to 1,000 times, equivalent to normal usage for 7-10 years before the battery capacity starts to decline. Obviously, you would replace the bike before that, so theoretically, it can extend the lifespan of the bike. ChamRider guarantees that after 1,000 charging cycles, the battery will retain at least 60% of its original capacity.
ChanRider's warranty guarantees that within the warranty period (24 months after purchase, or 36 months from the date of battery purchase), the 400Wh, 500Wh, and 625Wh batteries will have at least 60% of their original energy capacity, and the 300Wh battery will have at least 70% of its original energy capacity. This is based on proper maintenance or 500 full charging cycles, whichever comes first. The brand states that with proper care, the lifespan can be much longer, as supported by lab tests and customer feedback.
4. Where do the batteries go when they are depleted?
Battery dealers, whether for bicycle batteries, phone batteries, or car batteries, have a responsibility to recycle the batteries. Different battery recycling programs exist throughout Europe, and in the UK, Valpak operates the largest compliance scheme. Interestingly, the UK tends to export its battery waste rather than recycling it domestically, primarily to France, Germany, and Poland.
![]()
Introduction:
With the arrival of winter, extra attention must be paid to the maintenance of electric bicycle batteries. Low temperatures can significantly affect battery performance and lifespan. In this blog post, we will explore some expert tips and practical information to help you keep your electric bicycle battery in optimal condition during the winter season.
Storing the Battery in a Temperature-Controlled Environment:
Extreme cold can have a negative impact on the capacity and overall performance of electric bicycle batteries. It is crucial to store the battery in a dry, temperature-controlled environment whenever possible. The storage temperature should be maintained between 20°C and 25°C (68°F and 77°F) to ensure the best battery health.
Keeping the Battery Charged:
During winter, even if you don't use your electric bicycle frequently, it is essential to keep the battery charged. Commonly used lithium-ion batteries in electric bicycles self-discharge at a higher rate in colder temperatures.
During storage, the battery charge should be maintained between 30% and 60% to prevent deep discharge or overcharging. Using a smart charger that can automatically maintain the optimal charging level is recommended.
Minimize exposure to extremely cold environments during riding:
When riding in winter, take precautions to protect your electric bicycle battery from extreme cold. Lower temperatures can temporarily reduce the battery's capacity, affecting its range. Consider using neoprene covers to insulate the battery and provide some thermal protection. Additionally, avoid leaving your electric bicycle parked outdoors in freezing temperatures for extended periods.
Optimize battery usage and efficiency:
To maximize the performance of your electric bicycle battery during winter, take the following energy-saving measures:
A. Use pedal-assist mode: Pedal-assist mode is more efficient than relying solely on the throttle. It reduces the strain on the battery and extends the range.
B. Avoid frequent rapid acceleration: Sudden bursts of acceleration can deplete the battery more quickly. Gradual acceleration and maintaining a steady speed help conserve energy.
C. Plan your route wisely: Plan your rides to minimize steep inclines and strong headwinds as these factors increase the workload on the battery.
Regularly check battery voltage and capacity:
Monitoring the voltage and capacity of your electric bicycle battery is essential for understanding its health. Use a battery monitoring system or consult the electric bicycle manufacturer's guidelines to measure the battery's voltage and capacity regularly. If you notice a significant decrease in capacity or abnormal voltage readings, consider contacting professionals for further inspection.
Conclusion:
Properly maintaining your electric bicycle battery in winter is crucial for ensuring optimal performance and lifespan. By storing the battery in a temperature-controlled environment, keeping it charged, minimizing exposure to extreme cold, optimizing battery usage, and monitoring its voltage and capacity, you can enjoy reliable and efficient rides throughout the winter season. Remember, a well-maintained battery enhances your electric bicycle experience, allowing you to effortlessly ride through snowy landscapes.
The electric bike battery is one of the most important parts of an electric bike and without it the electric bike will turn into a regular bike.With this importance, everyone is trying to get the best performance from the battery in order to increase his enjoyment of the electric bike.
One of the most frequently asked questions: Why is my ebike battery draining so fast? In fact, this question is an important but somewhat confusing question.The reason for this is that the word FAST cannot be measured, meaning the battery drained fast, i.e. some 15 minutes of riding your ebike.
Or drained fast, meaning if you used to use the ebike for 20 miles per one charge, and now you go 15 miles per one charge? That is why in this post we will answer the question Why is my ebike battery draining so fast? from both sides.We will explain the reasons that lead to abnormal battery consumption and also the reasons that reduce the range of a single charge.
So that you have all the information you need to determine the causes of the battery problem and how to repair it.
Why is my ebike battery draining so fast? (the extreme condition reasons)
As a general rule, the battery drains fast as a result of damage to the internal cells of the battery or a problem with the BMS.
1-Damage Cell or Group of Cells.
The first and main reason why the electric bike battery drains fast is that there is damage to a cell or group of cells inside the battery, and the reason for this is that when there is a damaged battery cell the voltage becomes lower than normal, so the BMS “battery management system” completely shuts down the battery to save the internal cells of the battery.
To understand this point better, let’s take a quick look at how the BMS works.
Inside the battery of your electric bike are cells grouped together and each group is connected in series and connected to the BMS.
Through this connection, the BMS measures the voltage coming out of each group.
BMS is programmed to a minimum voltage & when the battery cells reach it, the BMS turns off the full battery completely.
Based on this, if you have only one cell or a group of cells damaged, you will find that the battery drains very fast.
In order to solve this problem, the damaged cell must be identified by measuring the voltage for each group of cells using a voltmeter
2-BMS Problem.
The second reason that may lead to the battery draining quickly is that there is a problem with the BMS unit itself.
The reason for this is that the BMS, as we mentioned, is the controller of the battery, so if there is a problem with the BMS and it is unable to read the battery cell voltage correctly, It will cause the battery to shut down quickly and you will notice that the battery is drained abnormally.
To solve this problem, you can reset the BMS or replace the BMS. You can see this post to learn the correct ways to do REST for BMS
Why is my ebike battery draining so fast? (The reasons for the low mileage)
In this part of the post, we will explain the most important reasons that reduce the miles you travel with your electric bike on a single charge.
1-Using Super Fast Charger.
One of the reasons that reduce the performance of the battery in general and reduce the long term is the use of a very fast charger because this will strain the battery cells and reduce their lifespan.
Based on my personal experience, I have noticed that the number of miles I travel when charging my bike battery with the original charger is more than the miles I travel when I use the fast charger.
Of course, you will need to use a fast charger in some situations, such as you need to charge on the go in case you are away from home,but do not make the fast charger your first option.
You can check out this post to learn how to choose a fast charger that is suitable for your bike battery.
2-Wrong storage habit.
When storing your electric bike battery, you should follow the rules that help maintain the life span of the internal cells and or these rules are to keep the charge rate around 75%.
We wrote this post that explains the best steps that you can take to maintain your bike battery during storage.
3-Using throttle only.
When you rely only on the throttle while riding your ebike, this will lead to the battery draining fast because you are making the bike do all the work.
This will lead to the fact that the motor will need to consume a lot of watts, which will reduce the range of a single charge.
4-Going uphills too much
When you use an electric bike up a steep hill, it takes a lot of the bike motor to give you the right torque to go up the hill.
This will also increase the battery drain and reduce the range of a single charge.
5- Riding in hot weather.
When you ride your electric bike in very hot weather, this will affect the movement of ions inside cells, which makes the chemical processes that occur inside the cell difficult.
This will greatly reduce the duration of a single charge and generally, most high-quality BMS will shut down the battery if the internal temperature of the battery reaches a certain degree.
6-Loading a Lot of staff.
Another reason for the battery depleting quickly is loading many things on the bike or towing a trailer.
This will lead to an increase in pressure on the motor to produce the highest torque, which will increase the battery consumption and thus reduce the battery range.
Conclusion
The reason for fast battery draining (30 minutes or less) are often due to damage to some battery cells or a malfunction in the battery management system BMS
On the other hand, there are several reasons that lead to the battery draining faster than normal, including the frequent use of a fast charger that is not commensurate with the capacity of the battery, improper storage of the battery, loading heavy things on the bike, and riding the bike in very hot weather.
Also, the continuous use of throttle only while riding and riding uphills a lot.
The differences between lead-acid batteries and lithium-ion batteries on electric bicycles are quite apparent.
Cost:
Lead-acid battery systems can be several hundred or thousand dollars cheaper than comparable lithium-ion batteries.
Currently, the price range for lithium-ion batteries is between $5,000 and $15,000 (including installation costs), and this range may vary depending on the size of the required system.
Associated Costs:
The purchase and installation costs of lead-acid batteries are generally cheaper than lithium-ion batteries.
The cost component of lithium-ion batteries is higher; however, the lifespan value of lithium-ion batteries offsets this impact.
Energy Density:
The energy density of lead-acid batteries is much lower than that of lithium-ion batteries. Lithium-ion batteries have significantly higher energy density compared to lead-acid batteries.
Lithium-ion batteries can store more energy in the same physical space. Additionally, they can release more energy, providing power for a longer duration.
Discharge Capacity:
The discharge capacity of lead-acid batteries should not exceed around 50% as it can shorten the battery's lifespan.
Typically, lithium-ion batteries utilize 85% or more of their total capacity in a single cycle. Therefore, lithium-ion batteries have better effective capacity than lead-acid batteries.
Efficiency:
The efficiency of lead-acid batteries ranges from 80% to 85%. These batteries charge slowly and have lower effective battery capacity.
Most lithium-ion batteries have an efficiency of 95% or higher, meaning that 95% or more of the energy collected in the lithium-ion battery can be utilized. These batteries charge quickly and have a larger effective capacity.
Application:
Lead-acid batteries are well-suited for large-scale stationary applications where space is abundant and energy demands are low. In terms of cost and size, lithium-ion batteries may be the ideal choice for electric bicycles.
Environmental Friendliness:
Lead is a carcinogenic and environmentally hazardous substance. Even lead-acid batteries contain dangerous compounds like sulfuric acid. Lithium-ion batteries are more environmentally friendly as lithium is a harmless substance.
Which battery is best for electric bicycles?
For electric bicycles, lithium-ion (Li-ion) batteries are the best choice. While lead-acid batteries are still much cheaper, they are three times heavier than lithium-ion batteries.
Lithium-ion batteries are favored for their lightweight nature and suitability for long-distance travel. Compared to older battery technologies, lithium-ion batteries offer faster charging, longer range, and better power density, achieving longer battery life in lighter containers.
However, the five most critical variables to consider when choosing battery chemistry are specific energy, cost, lifespan, power, and safety.
What is the lifespan of an electric bicycle battery?
With proper maintenance, the battery lifespan can range from 3 to 5 years. Even when not in use, lithium batteries on electric bicycles will gradually lose capacity and self-discharge.
Even if the connected electric bicycle doesn't require any power or remains unused, the lithium battery on the electric bicycle will lose the stored energy due to internal actions.
Excessive self-discharge can cause irreversible damage to the electric bicycle's battery. Therefore, it is recommended to actively utilize it.
How Many Years Should An Ebike Battery Last?
Generally, a high-quality eBike battery may last between 3 and 5 years. Of course, this depends on various factors, including the type of battery, and how well you maintain it.
The major factors recommended for prolonging the e-bike’s battery life include the following:
Charge your battery completely for up to 4-7 hours before your first ride to extend its lifespan.
Use the original charger provided during the initial purchase with your e-bike; never mix and match chargers.
Do not wait until your e-bike battery is completely drained before charging.
Maintain your e-bike by charging it regularly and adequately.
Establish a charging station that is both dry and secure. Electrical gadgets should not be exposed to high humidity.
Learn your battery’s high and low voltage cut-off limitations.
Regularly clean around the battery connections and eliminate any corrosion.
Lithium batteries are the most prevalent battery in electric bikes nowadays.
Advantages Of Lithium Batteries
![]()
Disadvantages of lithium electric bicycle batteries
![]()
Advantages Of Lead Acid Batteries For E-Bikes
![]()
Disadvantages of lead acid batteries for e-bikes
Conclusion:
Which is better, lead-acid batteries or lithium-ion batteries? In most cases, lithium-ion battery technology is superior to lead-acid battery technology due to its advantages in reliability and efficiency.
If the electric bicycle is not used frequently, the cheaper lead-acid battery may be preferred. According to recent research, the lifespan of lithium-ion batteries in electric bicycles is 45% longer than that of equivalent-rated lead-acid batteries.
All electric bicycles are powered by batteries, allowing riders to easily commute. Some electric bicycles have batteries that can be easily removed with a simple key. However, there are electric bicycles with non-removable batteries, which means that if the battery fails, you won't be able to ride in electric-assist mode. I will show you some tips and tools to make it easier for you to remove the battery.
How to Remove an Electric Bicycle Battery: 3 Steps
Removing the battery from an electric bicycle is not a complicated task, but there is a significant risk of causing
serious damage to the battery if not done correctly. To avoid this, you must follow the proper steps.
Step 1: Remove the Seat
Simply use a screwdriver to detach the seat.
Step 2: Unlock the Battery
Next, you need to unlock the battery. If you turn the key counterclockwise beyond the position where the key
can be removed, the locking pin should retract into the battery.
Step 3: Carefully Remove the Battery
Allow the battery to drop down and take it out of the frame. After removing the locking pin, you should be
able to pull out the battery using the handle on top of the battery.
What tools are needed to remove an electric bicycle battery?
The tools required to remove an electric bicycle battery will depend on whether you want to remove the battery using the traditional method with a key or without a key. Here are some tools that may be needed to remove an electric bicycle battery:
- key
- Axle blade (only if you have lost the key)
- Screwdriver (in the case of a lost key scenario)
- Bolt cutters
- Electric Drill
How to remove an electric bicycle battery without a key?
Using common sense when handling your e-bike key will help you avoid these problems, whether you have a simple single-pin spring lock or some high-tech, expensive bike locks. If that doesn’t work, let’s review several methods for taking out your electric bike’s battery without a key in case you need to replace it or make emergency repairs.
Cut a Lock
A common household object can be used to drill or cut through a bike lock. Ordinary tools for drilling or cutting locks include some common home objects.
These include an electric drill and a bolt cutter. Power equipment like electric drills is particularly helpful since they can remove large amounts of stuff at once.
Picking
Professional lock pickers typically have the best tips for picking a bike lock. It’s worth noting that digital locks are nearly tough to pick.
Unlike typical locks, they are designed to be secure with electric power. Pressing a striking spring and the other pins and springs inside the lock can gradually unlock the lock. Until it gradually opens completely.
Tips for removing an electric bicycle battery:
While removing the battery from an electric bicycle may seem straightforward and not overly complicated, there are some recommended practices to keep in mind.
When and why should you remove the battery from an electric bicycle?
For safety reasons and to maintain the health of the battery, it is recommended to remove the battery from the electric bicycle.
Additionally, when the external temperature exceeds 20 degrees Celsius or falls below 0 degrees Celsius, it is advised to take out the battery and store it in a dry, room-temperature environment to minimize stress on the battery.
Furthermore, by taking out the battery and keeping it indoors at home or in your workplace, it reduces the risk of theft.
Does using an electric bicycle without a battery affect its functionality?
Whether by choice or due to a depleted battery, an electric bicycle functions the same as a regular bicycle when the motor is not in use.
Regardless of the reason for riding without a battery, you can rest assured that it will not damage the motor or the bicycle. The only difference is that your muscles will bear the sole burden of propulsion.
The weight of an electric bicycle depends on the pedal-assist components and the inherent resistance of all the power system components. These factors will affect your riding experience without the battery.
Why are Rad Power Bike batteries challenging to remove?
Rad Power Bike batteries are difficult to remove because the battery terminals take up some space at the bottom, making it challenging to slide or pull the battery out by the terminals.
Therefore, you have to be careful to only push or pull the battery itself, not the terminals. Otherwise, your efforts will be in vain. Due to the battery and terminals being made of the same material and almost seamless, it's easy to forget this distinction.
Instead, look for any fractures. You must regularly lubricate the battery attachments to prevent them from becoming nearly hard to remove. You should lubricate the bike’s battery as well as the area where it attaches to the bike
Should I keep the battery on or off when it's on the bike?
When not using the bike, it is always advisable to remove the battery from the electric bicycle. There are a couple of reasons for this. Firstly, it is for safety considerations.
The cost of the battery is approximately one-third of the bike's cost, and electric bikes are more likely to be targeted by thieves. If an expensive bike is stolen, separating the expensive battery can mitigate the loss.
Is removing the battery enough for theft prevention?
It is not foolproof since people can still ride the bike without the battery, so it doesn't completely deter theft. Most bike thefts are crimes of opportunity. If someone with questionable morals sees an unlocked bike while out and about, they might think it's easier to ride away with it. So they hop on the bike, ride to their destination, and ultimately, it disappears.
Why is my e-bike battery not working as it used to?
For instance, your e-bike now only charges up to 48V when it used to reach 54V. Additionally, it has become weak and sluggish, with a sharp drop in battery level when accelerating.
1. End of battery life:
Your battery may have reached the end of its life. However, it could also have internal damage due to various factors such as age, number of charge/discharge cycles, and more.
2. Improper battery handling:
Mishandling the battery, such as using an incorrect charger type or voltage, causing short circuits on the terminals, can also result in similar damage within a relatively short period.
3. Possibly defective battery:
If you notice the battery quickly draining even when not in use, it may indicate a defect in the battery you have. Remove the battery pack from the e-bike and charge it on a bench for testing.
After charging, without disturbing the bike, check the battery. If your lithium-ion battery cannot hold a charge, it indicates a failure.
Conclusion
Knowing how to remove the e-bike battery can assist you in various ways. I believe it is essential to consider both the aesthetics of the bike with the battery neatly tucked away and its practicality, as well as the importance of simply removing the battery and taking it with you to a secure location.
