Lithium ion battery cell

Lithium ion battery cell

The rechargeable lithium ion battery is the gasoline of the 21st century. 18650 21700 cells are typical type for using to make battery pack for widely electrical equipment. Vodno offers a variety of different brands battery cells. Safety features of lithium ion battery cell There are very strict standards for the safety performance of lithium-ion batteries in the world. A qualified lithium-ion battery should meet the following conditions 1. Short circuit: no fire, no explosion 2. Overcharge: no fire, no explosion 3. Hot box test: no fire, no explosion (constant temperature of 150℃ for 10min) 4. Acupuncture: no explosion (use a Ф3mm nail to penetrate the battery) 5. Plate impact: no fire, no explosion (10kg heavy object hits the battery from a height of 1M) 6. Incineration: no explosion (gas flame grill battery Advantages of li ion cell 1. High voltage The working voltage of single battery is as high as 3.7-3.8V (3.2V for lithium iron phosphate), which is 3 times that of Ni-Cd and Ni-MH batteries. 2. Greater energy The actual specific energy that can be achieved is about 555Wh/kg, that is, the material can reach a specific capacity above 150mAh/g (3-4 times Ni-Cd, 2-3 times Ni-MH), which is close to its theoretical value. About 88%. 3.Long cycle life Generally, it can reach more than 500 times, or even more than 1000 times, and for lithium iron phosphate, it can reach 8000 times. For electrical appliances with low current discharge, the battery life will double the competitiveness of electrical appliances. 4. Good safety performance No pollution, no memory effect. As the predecessor of Li-ion, the lithium battery has a short circuit due to the formation of dendrites, which reduces its application fields: Li-ion does not contain cadmium, lead, mercury and other elements that pollute the environment; some processes (such as sintering) A major drawback of Ni-Cd batteries is the "memory effect", which severely restricts the use of batteries, but Li-ion does not have this problem at all. 5. Low self-discharge The self-discharge rate of fully charged Li-ion stored at room temperature for 1 month is about 2%, which is much lower than 25-30% of Ni-Cd and 30-35% of Ni-MH. 6. Fast charging The capacity of 1C charging in 30 minutes can reach more than 80% of the nominal capacity, and the ferro-phosphorus battery can be charged to 90% of the nominal capacity in 10 minutes. 7. Working temperature The working temperature is -25~45°C. With the improvement of electrolyte and positive electrode, it is expected to expand to -40~70°C.   Vodnobattery is a famous lithium ion battery cell supplier in china, we provide a series of battery solutions for E-bike with customized services.

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Lithium battery pack

Lithium battery pack

Li-Ion (Lithium Ion) batteries are rechargeable batteries, lithium ion battery pack has many different sizes and capacities. Rechargeable lithium ion battery pack are commonly used in many consumer electronic devices today. They are one of the most popular types of rechargeable battery for portable or hand held electronic devices and as with all rechargeable batteries. Lithium Ion rechargeable batteries offer one of the best energy densities, experience no memory effect, and their self discharge rate is very slow, when not being used. There are a series of Li-ion battery packs ranges from 24V to 72v. 18650 Li-ion batteries are the battery of choice when designing for higher voltage and current requirements. Li-ion have relatively low self-discharge rates, and are capable of high discharge currents and better performance than nickel and lead based batteries. Over the last 10 years, Vodno focus on Lithium-ion (Li-ion) battery solutions due to its inherent strengths over other chemistries, such as high energy density, better cycle life, lighter weight, charge reliability, longer shelf life, etc. Find more details below and get the wholesale price now!

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Electric Bicycle Battery Pack

Electric Bicycle Battery Pack

Li ion battery is much popular in the electric bicycle industrial, Its brings us friendly environment with a lot of fun in our life. Li ion battery pack for e-bike is lighter weight, size smaller and high energy power, It is the best choice for e-bike project up to now.    Electric Bicycle Battery Pack Advantages        High energy density      The weight of a lithium-ion battery is half 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.        High voltage     The operating voltage of a single lithium-ion battery is 3.7V (average value), which is equivalent to three nickel-cadmium or nickel-hydrogen batteries connected in series.        No pollution      Lithium-ion batteries do not contain harmful metal substances such as cadmium, lead, and mercury.        Without metal lithium      Lithium-ion batteries 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.        High cycle life     Under normal conditions, the charge-discharge cycle of a lithium-ion battery can exceed 500 times.          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.          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.   Types of lithium battery for e bike at VODNO   24v E-bike Battery Pack   36v E-bike Battery Pack   48v E-bike Battery Pack   52v E-bike Battery Pack     Electric Bike Battery Pack Manufacturer   VODNO innovative technology built to your product standards. We approach every OEM partnership with openness. We are the best E- Bike battery pack manufacturer for you.   Highest standards   Utmost level of quality   Manufacturing capability   Trust VODNO to be your single source partner to deliver the custom battery solution that achieves your vision .  

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18650 Battery Pack

18650 Battery Pack

The lithium 18650 battery pack is one of the most popular lithium-ion battery packs available today. The lithium-ion cell classified by its 18mm x 65mm size, which is slightly larger than a AA battery. 18650 Li-ion batteries are the battery of choice when designing for higher voltage and current requirements. Li-ion battery pack have easier assembly, variable size, difference rate for all electrical equipement.  Advantage of 18650 battery pack 1. Large capacity The capacity of the 18650 lithium battery is between 1200mah and 3600mah, while the general battery capacity is only about 800mah. If combined into a 18650 lithium battery pack, the 18650 lithium battery pack can easily exceed 5000mah. 2. Long life The 18650 lithium battery has a long life. The cycle life can reach more than 500 times in normal use, which is more than twice that of ordinary batteries. 3. High safety performance The 18650 lithium battery has high safety performance. In order to prevent the battery from short-circuiting, the positive and negative electrodes of the 18650 lithium battery are separated. Therefore, the short-circuit phenomenon may have been reduced. A protective board can be installed to avoid overcharge and overdischarge of the battery, which can also extend the service life of the battery. 4. High voltage The voltage of 18650 lithium battery is generally 3.6V, 3.8V and 4.2V, which is much higher than the 1.2V voltage of nickel-cadmium and nickel-hydrogen batteries. 5. No memory effect. It is not necessary to empty the remaining power before charging, which is convenient to use. 6. Small internal resistance  The internal resistance of polymer batteries is smaller than that of ordinary liquid batteries. The internal resistance of  polymer batteries can even be below 35mΩ, which greatly reduces the self-consumption of the battery and prolongs the standby time of the mobile phone. In time, it can fully meet the international standards. This kind of polymer lithium battery that supports large discharge current is an ideal choice for remote control models, and it has become the most promising product to replace nickel-hydrogen batteries. 7. It can be combined in series or parallel to form a 18650 lithium battery pack 8. Wide range of use Notebook computers, walkie-talkies, portable DVDs, instrumentation, audio equipment, model airplanes, toys, camcorders, digital cameras and other electronic equipment. You can learn more about 18650 lithium ion battery packs below.

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Lifepo4 Battery Pack

Lifepo4 Battery Pack

Introduction of Lifepo4 Battery Pack  Lifepo4 battery pack is a kind of lithium ion battery that uses lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material. The rated voltage of the single unit is 3.2V, and the charge cut-off voltage is 3.6V~3.65V. During the charging process, part of the lithium ions in the lithium iron phosphate are extracted, transferred to the negative electrode through the electrolyte, and embedded in the negative electrode carbon material; at the same time, electrons are released from the positive electrode and reach the negative electrode from the external circuit to maintain the balance of the chemical reaction. During the discharge process, lithium ions are extracted from the negative electrode and reach the positive electrode through the electrolyte. At the same time, the negative electrode releases electrons and reaches the positive electrode from the external circuit to provide energy for the outside world.  Features of Lifepo4 Battery Pack Higher energy density According to reports , the energy density of the square aluminum-shell lithium iron phosphate batteries mass-produced in 2018 is about 160Wh/kg. In 2019, some excellent battery manufacturers can probably achieve the level of 175-180Wh/kg. The film technology and capacity can be made larger, or 185Wh/kg can be achieved.  Good safety performance The electrochemical performance of the cathode material of Lifepo4 battery is relatively stable, which determines that it has a stable charging and discharging platform. Therefore, the structure of the battery will not change during the charging and discharging process, and it will not burn and explode. It is still very safe under special conditions such as filling, squeezing, and acupuncture. Long cycle life The 1C cycle life of Lifepo4 battery is generally up to 2000 times, or even more than 3,500 times, and the energy storage market requires 4000-5000 times or more, guaranteeing a service life of 8-10 years, which is more than 1,000 cycles of ternary batteries Life span, and the cycle life of long-life lead-acid batteries is about 300 times. Lifepo4 is the more efficient technology batteries , knocking out traditional lead acid batteries . Lifepo4 battery has the advantages of high working voltage, high energy density, long cycle life, good safety performance, low self-discharge rate and no memory effect. VODNO, one of the leading Lifepo4 battery pack manufacturer, provides a complete line of 12 ,24 and 48 volt batteries for use inRVS , Boats , Evs and off-grid applications and much more.

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RC Lipolymer Battery

RC Lipolymer Battery

More power, less weight—exactly what RC cars and trucks need, no matter what you're into: racing, trail trucks, buggies, truggies, monster trucks, touring cars, on-road, off-road, 2WD, 4WD, 4X4--you name it! Extend run time and improve performance with high-quality, premium Lithium Polymer (LiPo) and Lithium High Voltage (LiHV) battery packs

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