Introduction: The size of the battery is not related to the life of the battery. It is related to the number of times the battery is charged and discharged. It is closely related to the maintenance and use of the battery.

1, limited by the battery technology, at present, electric bicycles have a maximum driving range of the problem, usually 40 km to 50 km (48V12A).

2, the price is expensive, appearance good-looking car - performance is not necessarily cheaper than the price, simple appearance of a good car.

3. The key to determining the quality of an electric bicycle is battery box ----- the quality of the motor (preferably a program machine). The high-quality motor has small losses, high efficiency, long mileage, and good batteries; as for the battery, it is almost a decisive factor for the quality of an electric bike. The electric bicycles on the market are basically maintenance-free lead-acid batteries. They have the features of low price, excellent electrical performance, no memory effect, and easy use. Basic can be used with confidence. Closely related to battery life is the selection of the charger. Be sure to use the original charger. (Chargers have smart numbers with CPUs).

4. Brand: Since electric bicycles use batteries in series, they must be strictly matched to ensure the consistency of each battery to ensure the performance of the entire battery. Otherwise, the battery with the poorer performance in the battery will quickly deplete. The consequence is that your car may ride for 3 or 4 months and you should change the battery. Testing the consistency of the battery requires an expensive set of equipment. The general small manufacturers do not have these conditions. Therefore, you should purchase the brand-name products of Dachang if you do not understand the electric bike and battery technology. (Currently, the most powerful and R&D capability is the Luyuan mainland dove brochure with a nationwide warranty address phone).

5. Nowadays you can often see someone on the street riding an electric bike with a child. It should be said that this is a detriment to electric bikes. If you have to bring people, you must only bring children under 10 years of age. Otherwise, the life of the motor may be greatly shortened. (With occasional two children or an adult, shouldn't it be a problem?)

Second, how to use electric bike

Correct operation and use are essential for the proper functioning of electric vehicles and for ensuring the service life of motors and batteries. Don't let people who don't ride a bike use it, prevent it from crashing and damage it, and don't overload heavy objects and people to avoid excessive power consumption or traffic accidents. Before each use, check whether the brakes and speed control are in good condition, and whether the front and rear wheels are normal, so as to ensure normal riding and riding comfort. When you get off or stop the car, turn off the power switch.

The daily use points can be summarized as: "Good maintenance, more assistance, and more frequent charging." Good maintenance: Do not cause accidental damage to the electric bike. For example, do not allow the water to flood the center and the controller. Be sure to open the lock when starting the vehicle. Close the switch after getting off. Usually, the tires should be fully inflated and should be avoided in summer. Time exposure to the sun, avoiding storage in high temperature, corrosive environments, brakes should be tight and moderate; multi-assistance: the ideal use of the method is "people help the car move, electric help people, manpower power linkage", effort and power.

Because of mileage, vehicle weight, road conditions, number of starts, number of brakes, wind direction, wind speed, air temperature, tire pressure, etc., it is necessary to ride with a pedal before starting and twist the handle during riding. On the bridge, uphill, upwind and heavy-duty driving must use pedal power to avoid damage to the battery, affect the battery life of the continued mileage; ground charging: the use of lead-acid batteries, to develop the habit of using the same day charging the day, After riding an electric bike every day, you must be fully charged no matter how far you ride it. Don't wait for electricity to be recharged, so as to avoid shortening battery life due to “deep discharge”. Also do not charge the battery when it is upside down. A fully-charged battery should be recharged once a month if it is not used for a long period of time. Charging requires the use of a matching charger, the charger has a protective function, long-term charging (usually no more than 24 hours) will not damage the battery. Charger to avoid high temperatures and humidity

Third, how to maintain electric vehicles

1, the use of the advantages of multi-functional electric bike, the best way is to help people move, electric help people move, human power linkage, both effort and power.

2, there is zero start function of electric bicycles, due to static current at start-up, more energy, and easy to damage the battery, you should first use the pedal to ride, and then electric, to a certain speed and then power to accelerate, avoid avoiding the battery Large current discharge, increase the mileage of a charge, is conducive to prolong life.

3. The battery charger must use the special charger that comes with the car. The input plug is plugged into the AC outlet and the output plug is inserted into the battery box. After the battery box is inserted, the AC power is switched on. It can not be dislocated. It takes 3 to 8 hours to fully charge the battery. Hours are better for batteries.

4. The acceleration handle of an electric bicycle sometimes cannot be fully returned. Please develop a good habit of pushing the handle back into place after the completion of acceleration.

5. When the brakes are applied, the power of the motor is cut off immediately. However, when the brakes are prevented from opening, if the acceleration hand is still in an accelerated position at this time, the motor will immediately get the current forward, which is not conducive to safety. Please be sure to develop the good habit of pushing the handle back to the original after the completion of acceleration.

6. Each time you use an electric bicycle, you should check: (1) whether the tire pressure is sufficient, and the air pressure is sufficient to reduce the friction between the tire and the road; (2) whether the steering of the steering wheel is reliable, whether the brake is flexible and effective, and it is necessary to ensure the safety of the vehicle; (3) The socket of the battery box, whether the plug of the charger is loose, whether the battery box is locked and whether the new button of the lamp is valid, and it is necessary to ensure the circuit is unblocked.

7. Electric bikes are not suitable for use on uneven or steep roads. In case of such roads, please slow down or get off the train.

8, when riding in the winter, please try to use the main force of the ankle, this will not only allow your body to get exercise, but also help extend the battery life. (Because of the low temperature, the capacity of the battery pack decreases. If the depth of discharge increases, the continuous line mileage will be shortened.)

9. Although electric bicycles have good rainproof performance, please avoid direct solarization and rain, and prevent corrosion of the vehicle body or rotating parts. When the rainy season uses or passes through the pool or accumulated water, the water level can not be higher than the centerline of the axle. Prevent damage caused by water entering the motor.

10, the standard weight of electric bicycle is 80 kg, so to remove the weight of the rider, to avoid heavy objects, load, apply pedal assistance.

11. The seat height of an electric bicycle is subject to the rider's feet to the ground, ensuring safety.

12. The life span of lead-acid batteries used in electric bicycles has a great relationship with the daily use and maintenance of users. In general, the following points should be noted: (1) The smaller the depth of discharge, the shorter the distance. The longer the service life of the battery is, the better it is to cultivate the good habit of using with the charge. The use of the battery often maintains the state of abundance. (2) When the battery is left for a long period of time, it must be charged and recharged regularly, usually every month. (3) The large current discharge will cause some damage to the battery, so use the pedals to assist in the starting, uphill, weight-bearing, and top wind. (4) Use a matching charger when charging, place it in a cool, ventilated place, avoid high temperature and humidity, and avoid letting water enter the charger to prevent electric shock accidents.

Fourth, several aspects of the electric vehicle battery capacity attenuation

1. In the process of battery use and charging and discharging, “sulfurization” phenomenon will affect the battery capacity.

Note: Due to the electrochemical reaction during the vulcanization process, the plates will gradually be covered with hard lead sulfate crystals, resulting in a gradual reduction in the active plate area and a decrease in the acid concentration, which will lead to a drop in battery capacity.

2. The charging voltage of the battery in winter and summer is different. If there is no suitable charger that can be adjusted with the ambient voltage, it will cause the battery to be overcharged in the summer and eventually cause the battery to lose water. This will cause the battery to bulge and deform, or the winter mileage will decrease.

Note: The battery charging voltage is inversely proportional to the ambient temperature.

3, due to the use and battery factory compatibility error and other factors, there will be voltage imbalance between the series battery, the battery capacity will be subject to the lowest voltage battery.

Note: Because the battery is made up of 3 to 4 12V batteries in series, due to battery factory configuration errors and other factors, the voltage in the battery will be inconsistent, and the traditional series of constant voltage or constant current charging The problem of unbalanced voltage between the batteries cannot be solved. Ultimately, the battery capacity will be affected by the battery with the lower voltage, and the power of other higher capacity batteries will not be released.

Fifth, ride maintenance knowledge:

1, almost all kinds of batteries are affected by the ambient temperature. In general, the discharge performance of the battery is better when the temperature is higher. When the temperature is 0 degrees, the battery power may drop by more than 1/3. Therefore, when the winter comes, or in a cold area, the continued driving and reduction after a single charge is a normal situation. When riding in the winter, please try to use the entire pedal to help, so that your body can be exercised and your legs and feet can Freezing of the parts will also help to prolong the service life of the battery (because the low temperature will reduce the capacity of the battery, the same ride distance, and the depth of discharge will increase). When the temperature rises above 20 degrees, its function naturally recovers. However, when the temperature exceeds 60 degrees (such as exposure time in the summer sun is too long), it may affect the normal use of the vehicle's electrical appliances.

2. The series of electric vehicles on the mainland have passed the “spraying” experiment before leaving the factory. They are not afraid of rain and snow but cannot wading. When the water level floods the controller, wire circuit or motor hub, it will cause a short circuit and damage the electrical equipment; on rainy days, do not park the electric vehicle in rainy conditions for a long time, which may cause rainwater to infiltrate into the electrical components. Please pay attention!

3, lead-acid batteries used in electric bicycles are consumables, their life expectancy is only 1.5 to 2.5 years, life length and long-term users have a great relationship with the daily use and maintenance, in general, pay attention to the following points: 1 each time the battery is used The smaller the depth of discharge, the longer the service life of the battery, so no matter how large a battery pack is used, users should develop a good habit of using the charger. 2 When the battery needs to be placed for a long time, the heart must be fully charged and recharged regularly, usually one or two months. 3 High-current discharge will cause some damage to the battery, so when starting and going uphill, please use the pedals to assist.

4. It is forbidden to use chargers and other accessories not specified by the company. If an accident occurs due to this, the company will not be responsible.

5, Continental line series of electric bicycles with a loading capacity of 75 to 100 kg, so do not bring people and bring too heavy objects.

6, electric bike is not suitable for uneven or steep roads, in case of such roads, please get off to implement.

7. The seat height of an electric bicycle is subject to the rider's two feet to the ground to ensure safety.

8. The key to the quality of electric bicycles is the quality of motors and batteries. The high-quality motor symphony is small in consumption, high in efficiency, farther in driving range, and better in batteries; as for the battery, it is almost a decisive factor in the quality of an electric bicycle. The electric bicycles sold in the market are basically maintenance-free lead-acid batteries, which are characterized by low price, excellent electrical performance, no memory effect, and ease of use.

9. Brand: Since electric driving is a battery used in series and in series, the battery must be strictly matched to ensure the consistency of each battery in order to ensure the performance of the entire battery pack. Otherwise, the battery with poor performance in the battery will quickly deplete. The consequence is that your car may ride for 3 or 4 months and you should change the battery.

Testing the consistency of the battery requires a relatively expensive set of equipment. The general small manufacturers do not have these conditions. Therefore, if you do not understand the battery technology of the electric bicycle, you should purchase the brand-name products of the manufacturer as much as possible.

*Before riding, check whether the battery box is locked firmly and whether the display panel lights are normal.

* Same as checking an ordinary bicycle, make necessary mechanical and driving safety checks.

* When driving in a rainy day, the depth of accumulated water does not exceed the normal condition of the center of the electric wheel. If the water depth of the road area exceeds the center of the electric wheel, it may cause the electric wheel to seep and cause a malfunction.

* Vehicles should be kept away from places exposed to damp air, high temperatures and corrosive gases, so as to avoid chemical corrosion of the plating surfaces of metal parts.

* Avoid exposure of the vehicle to prolonged exposure to sunlight and rain for a long time so as not to damage the components in the controller, resulting in malfunction and accidents.

* The structure of the electrical control part is complex, and the user should not arbitrarily disassemble or repair it. If the local charging voltage is not stable, it is easy to blow the charger fuse. It is recommended to use an AC voltage regulator.

*Electric bicycles feel heavier when reversing, and it is normal to push forward with slight friction in the hub.

* Cycling should not be overloaded and heavy objects and people should not be placed so as not to damage the battery and the motor.

* The lubrication of the bicycle is an important part of the maintenance of the bicycle. According to the usage, the front axle, rear axle, middle axle, flywheel, front fork, suspension pivot point and other components should be scrubbed and lubricated every six months to a year. (Recommended Molybdenum disulfide grease). The transmission parts in the electric hub have been coated with special lubricants so that users do not have to scrub and lubricate themselves. If abnormal conditions are found, maintenance can be done at the company's special maintenance point.

1, the battery rated capacity: according to national standards for battery capacity. The unit is represented by Ah, which reflects the amount of battery storage. The larger the value is, the more the stored electricity is. Nowadays, the capacity of the electric vehicle battery on the market is generally 10 Ah, and it is discharged at a constant current of 5 A for 120 minutes.

2. The actual capacity of the battery: It reflects the actual storage capacity of the battery. The unit is expressed in Ah hours. Similarly, the larger the hour, the greater the battery capacity and the longer the mileage of the electric vehicle. During use, the actual battery capacity will gradually decay. The national standard specifies that the actual capacity of a newly manufactured battery is greater than the rated capacity value of a qualified battery. For example, the battery of an electric bicycle on the market is discharged at a constant current of 5 A for more than 2 hours (135 minutes) and is greater than (2 hours X 5 A) 10 Ah. Equivalent to an electric vehicle traveling continuously on a flat road for more than 2 hours.

3, discharge cycle life: refers to the battery charge, discharge until the battery capacity is reduced to 70% of the rated capacity of the cycle number, fully charged and then discharged to a certain depth for a cycle. The more cycle times of the battery, the longer the service life is, and the cycle life of the electric bicycle battery is not less than 350 times, and less than 350 cycles are unqualified batteries. As for electric bicycles on the market today, it is generally used for going to and from work or picking up children to go to school. It runs continuously for about one hour (approximately 25 kilometers) in a city-wide area. The equivalent of a battery cycle is about 180 times a year. If it is a qualified battery, it can be used for nearly two years. At this time, the battery capacity is also rated at 70%, which means that the electric vehicle can continue to travel for 70 minutes, and travels about 30 kilometers.

4. Rated voltage of the battery: The battery voltage value specified by the national standard is the rated voltage. It is expressed in V volts. The voltage value of the lead-acid battery per cell is 2V. The battery of the electric vehicle on the market is only 6V and 12V per cell. Each 6V battery is made up of 3 battery single cells in series. The 12V battery is made up of 6 battery cells in series. Most of the batteries used for electric bicycles are 36V, and then 6 battery 6Vs or 3 12V batteries are connected in series to form a battery pack.

5. The battery pack voltage refers to the voltage value when the battery pack actually outputs electrical energy. The working voltage of the 36V battery pack is generally between 41 V and 31.5 V. The battery voltage less than 31.5 V is called over-discharge or under-voltage, and it is easy to damage the battery. Group, affect battery life.