This is the leading technology in the world. At present, no company has the strength of Luyuan Group, and Luyuan is the industry leader. Technology determines first-class. Wei Chao is good, too. It is one of 10 brand batteries.
The batteries of 48V 12A and 48V20A are just mileage problems, 48V 12A-40-50km.
48 v 20 a-60-70 km. The size of the battery has nothing to do with the life of the battery, but with the charge and discharge times of the battery.
It is closely related to the maintenance and use of batteries.
1. Limited by battery technology, all electric bicycles have the maximum driving range at present, which is generally 40 km ~50 km (48V 12A).
2. An expensive car with a nice appearance-the performance is not necessarily better than a relatively cheap car with a simple appearance.
3. The key to determine the quality of electric bicycle is the quality of battery box-motor (it is best to choose program motor). High-quality motor has small loss, high efficiency and long driving range, which is good for battery; As for the battery, it is almost a decisive factor for the quality of an electric bicycle. The electric bicycles sold in the market are basically maintenance-free lead-acid batteries, which have the characteristics of low price, excellent electrical performance, no memory effect and convenient use. , you can basically use it with confidence. Battery life is closely related to the choice of charger, so the original charger must be used. (The charger is intelligent and has a CPU with a project number.)
4. Brand: Because the batteries of electric bicycles are used in series in groups, the batteries of this group must be strictly selected to ensure the consistency of each battery, thus ensuring the performance of the whole battery pack. Otherwise, this set of batteries with poor performance will soon fail, and the consequence is that your car may have only been riding for 3 or 4 months, so it is time to change the batteries. Testing the consistency of batteries requires an expensive set of equipment, which is not available in ordinary small manufacturers. Therefore, if you don't know about electric bicycles and battery technology, try to buy brand-name products from big manufacturers. (At present, the pigeon with the strongest R&D skill is Luyuan mainland.
Telephone number with national joint guarantee address on the instruction manual)
Nowadays, people are often seen riding electric bicycles with children on the street, which should be said to be harmful to electric bicycles. If you must take people, you must only take children who are not too heavy below 10, otherwise the life of the motor may be greatly shortened.
Second, how to use the electric bicycle?
Correct operation and use are very important for the normal function of electric vehicles and the service life of motors and batteries. Don't let people who can't ride bicycles use it to prevent falling and collision, and don't overload people with heavy objects to avoid excessive power consumption or traffic accidents. Before each use, check whether the performance of the brake and governor is good, whether the front and rear wheels are normal, and ensure normal riding and safe riding. Please turn off the power switch when getting off or parking. The main points of daily use can be summarized as: "Good maintenance, more help, and diligent charging." Take good care: just don't accidentally damage the electric bicycle. If the center and controller of the machine are not flooded, the lock must be unlocked when starting, and the switch must be turned off after getting off the bus. Usually, tires should be completely inflated. Avoid long-term sun exposure in summer, avoid storage in high temperature and corrosive environment, and brake moderately. Multi-assistance: the ideal use method is "people help the car to move, electricity helps people to walk, and manpower and electricity are linked", which saves labor and electricity. Because mileage is related to vehicle weight, road conditions, starting times, braking times, wind direction, wind speed, temperature and tire pressure. When starting, you should ride with your feet first, turn the knob when riding, and use your feet to help when going up the bridge, uphill, against the wind and under heavy load, so as not to damage the battery and affect its continuous mileage service life. Recharge frequently: When using lead-acid batteries, get into the habit of charging on the same day. After riding an electric bicycle every day, no matter how far you ride, you should be fully charged. Never wait until the battery runs out before recharging, so as not to shorten the battery life due to "deep discharge". Don't charge the battery upside down. If it is not used for a long time, the fully charged battery should be charged once a month. You need to use a matching charger to charge. The charger has a protective function, and charging for a long time (generally no more than 24 hours) will not damage the battery. The charger should avoid high temperature and high humidity.
Third, how to maintain electric vehicles
1. Using the multifunction of electric bicycle, the most ideal method is that people help the bicycle move, electricity helps others move, and manpower and electricity are linked, which is both labor-saving and electricity-saving.
2. The electric bicycle with zero-start function is easy to damage the battery because of its large current and high energy consumption when it is started at rest. It should be pedaled first, then electrified, and then accelerated at a certain speed to avoid over-current discharge of the battery, thus improving the mileage of one-time charging and prolonging the service life.
3. The battery must be charged with a special charger equipped with the vehicle. The input plug is plugged into the AC socket, and the output plug is plugged into the battery box. The battery box should be plugged in first, and then the AC power supply should not be misplaced. It takes 3-8 hours to fully charge, and it is better to charge the battery for a few more hours.
4. Sometimes the accelerator handle of electric bicycle can't return to its original position. Please get into the good habit of pushing the handle back to its original position after the acceleration is completed.
5. When braking, the motor power supply will be cut off immediately. However, when the brake is turned off, if the accelerator handle is still in the acceleration position, the motor will immediately get current to move forward, which is not conducive to safety. Be sure to get into the good habit of pushing the handle back to its original position after the acceleration is completed.
6. Before using the electric bicycle every time, check: (1) Whether the tire pressure is sufficient can reduce the friction between the tire and the road surface; (2) Whether the handlebar steering is reliable, whether the brakes are flexible and effective, and ensure safe driving; (3) Whether the battery box socket and charger plug are loose, whether the battery box is locked, and whether the new button of the light is effective to ensure the smooth circuit.
7. Electric bicycles are not suitable for driving on uneven or steep roads. In case of such roads, please slow down or get off.
8. When riding in winter, please use pedal force as much as possible, which can not only exercise, but also help to extend the service life of the battery. (Because the low temperature reduces the capacity of the battery pack, if the depth of discharge increases, the continuous driving mileage will be shortened).
9. Although the electric bicycle has good rain-proof performance, please avoid direct sunlight and rain to prevent the body or rotating parts from rusting. When it is used in rainy season or when it passes through a pool or accumulated water, the water level should not be higher than the center line of the axle to prevent the motor from losing water.
10. The standard load of an electric bicycle is 80kg, so it is necessary to remove the weight of the cyclist and avoid overweight objects. Pedal assistance should be used when carrying heavy objects.
1 1. The seat height of an electric bicycle is subject to the rider's feet touching the ground to ensure safety.
12. The service life of lead-acid batteries for electric bicycles is closely related to the daily use and maintenance of users. Generally speaking, the following points should be noted: (1) The shorter the discharge depth (the shorter the distance), the longer the service life of the battery. Usually, we should form the good habit of charging when using, and always keep the battery fully charged when using. (2) When the battery needs to be placed for a long time, it must be charged first and regularly, usually once a month. (3) Heavy current discharge is harmful to the battery, so pedal is used for assistance when starting, going uphill, carrying load and facing the wind. (4) When charging, use a matching charger and place it in a cool and ventilated place to avoid high temperature and humidity. Don't let water enter the charger to prevent electric shock.
Four, several factors of battery capacity attenuation of electric vehicles.
1. The battery will be "vulcanized" during use and charging and discharging, which will affect the battery capacity.
Note: Vulcanization means that the electrode plate will be gradually covered by hard lead sulfate crystals due to electrochemical reaction during the use of the battery, which leads to the gradual reduction of the area of the active electrode plate and the decrease of the acid concentration, thus reducing the battery capacity.
2. The charging voltage of the battery is different in winter and summer. If there is no suitable charger that can be adjusted with the environment, the battery will lose water due to overcharging in summer, which will eventually lead to the deformation of the battery, or the mileage will be reduced due to insufficient charging in winter.
Note: The battery charging voltage is inversely proportional to the ambient temperature.
3. Due to various factors such as battery usage and factory compatibility errors, there will be voltage imbalance between series batteries, and the battery capacity will be limited by the battery with the lowest voltage.
Note: Because most batteries are composed of 3-4 cells 12V connected in series, there will be voltage inconsistency inside the batteries due to factory configuration errors and other factors. However, the traditional series constant voltage or constant current charging method can not solve the problem of voltage imbalance between batteries, and eventually the battery capacity will be affected by the battery with lower voltage, and the power of other batteries with higher capacity will not be released.