How to install the electric bicycle battery

14 precautions for electric vehicle battery installation

1.Before installation, the battery should be checked for damage and leakage, and the surface of the battery should be cleaned with a dry cloth. If the battery shell is found to be broken and leaking, the battery should be replaced immediately so as not to cause acid corrosion.


2. the battery should be installed upright, not upside down, the distance between adjacent batteries is greater than 2 mm wave, at the same time to prevent shock, pressure, firmly installed, in use shall not be tampering support impact, mutual friction, can not enter the water.


3.To ensure safe use, the battery box where the battery is installed must have ventilation holes and must not be blocked to prevent the gas generated by the battery from gathering in the battery box.


4.The battery is charged from the factory, usually the user can directly install the car and use it. If it is set aside for a long time (more than 2 months), it should be recharged before use: plug the charger into the battery box and then connect it to 220 volts AC, continue charging for 1-2 hours after the charger turns green, then you can stop charging.


5.When the electric bike is running, it is best to charge it after the battery has used about 80-90% of the power, do not charge it again after the battery power is exhausted, if the battery power is exhausted, the power should be turned off, do not use the battery “back up voltage” to force driving, in order to prevent the “over discharge “and shorten the life of the battery.


6.Electric bikes such as long-term use need to be fully charged battery before shelving, is strictly prohibited in the state of loss of power long term shelving storage.


7.Battery continuous charging time more than go 10 hours, the charger still does not convert to change the light seven appear battery hot phenomenon, should immediately prohibit charging, to the battery after-sales service to deal with, strictly prohibited in the charger does not convert to change the light continue to charge the case.


8. Different models, different brands, new and old batteries should not be mixed.


9. The battery should not be close to the fire source, heat source, hot season is strictly prohibited in the direct sunlight, should avoid the battery violent vibration, collision and positive and negative short circuit.


10.The capacity of the battery is based on the ambient temperature of 25 degrees, and the capacity of the battery will drop by about 1% for every 1 degree drop in temperature.


11.The battery should be avoided to be used in low temperature below -10 degrees.


12.Battery is a consumable product. After a period of charge/discharge cycle, the battery capacity will gradually decrease. It is normal for the range of electric vehicles to decrease. However, if the battery capacity drops below 60% of the standard during the warranty period, the battery is considered to be invalid and you should contact us in time. After the warranty period, the empty battery capacity drops below 60% of the standard value, which is normal wear and tear and does not belong to the scope of repair.


13.After the battery has been used for more than the warranty period, the battery should be handed over to our professional maintenance personnel for a comprehensive inspection to confirm that there are no safety hazards before it can be used again.


14.The electrolyte inside the battery is a strong corrosive acid, do not splash on the skin or clothing, if splashed on the skin, the eyes must be immediately flushed with a lot of water, in serious cases must be sent to hospital for treatment.

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Characteristics of lithium-ion battery

(1) High energy density

The weight of a lithium-ion battery is half that of a nickel-cadmium or nickel-metal hydride battery with the same capacity, and its volume is 20-30% of nickel-cadmium and 35-50% of nickel-metal hydride.

Lithium-ion battery

shuangye electric bike Lithium-ion battery

(2) High voltage

The working voltage of a single lithium ion battery cell is 3.7V (average value), which is equivalent to three nickel-cadmium or nickel-metal hydride batteries connected in series.


(3) No pollution

Lithium-ion battery do not contain harmful metal substances such as cadmium, lead, and mercury.

(4) Does not contain metal lithium

Lithium-ion battery do not contain lithium metal, so they are not subject to restrictions on the prohibition of carrying lithium batteries on passenger planes in aircraft transportation.


(5) High cycle life

Under normal conditions, the charge-discharge cycle of a lithium-ion battery can exceed 500 times.


(6) No memory effect

The memory effect refers to the phenomenon that the capacity of the nickel-cadmium battery decreases during the charge-discharge cycle. Lithium-ion batteries do not have this effect.

(7) Fast charging

Using a constant current and constant voltage charger with a rated voltage of 4.2V, the lithium-ion battery can be fully charged within 1.5-2.5 hours.

Lithium-ion battery

Lithium ion battery for electric bicycles can be roughly divided into three categories: lithium manganate battery, ternary material battery and lithium iron phosphate battery.



Lithium manganate battery: To solve the high temperature performance of lithium manganate battery, the positive electrode material, battery structure design and electrolyte formula of the battery must be improved. In Japan and South Korea, modified lithium manganese oxide is used. When the modified lithium manganese oxide battery is stored at 65°C for one week, the capacity only drops to 99%.



Ternary material battery: Cobalt, nickel, manganese ternary material is used as a lithium ion battery as the cathode material. It overcomes the shortcomings of poor high-temperature performance of lithium manganate and improves the specific energy of the battery.

Lithium-ion battery


Lithium iron phosphate battery: Since 2002, the United States and Canada have begun to develop iron phosphate lithium ion batteries, which have become a new type of power lithium ion battery with great development prospects. Long life, 2000 cycles of 1C charge and discharge at room temperature.



Advantages of lithium iron phosphate battery: high safety. The phosphate chemical bond has strong binding force and good structural stability; it is environmentally friendly and does not contain any heavy metals; it is non-toxic (SGS certified), no pollution; fast charging speed, high current 5~10C fast charge and discharge of lithium iron phosphate battery ; Good high-current discharge performance; 10~50C high-current high-power discharge.



Disadvantages of lithium iron phosphate battery: low temperature performance is inferior to other cathode materials such as lithium manganate. The cell voltage of a lithium iron phosphate battery is 3.2V. A 36V battery pack requires 12 single cells in series. The life of single lithium iron phosphate battery is currently more than 2000 times, but the life of the battery pack may only be 500 times

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