Huizhou JB Battery Technology Co., Ltd is major in producing custom lithium ion battery packs (Li-Ion batteries) builder with design and manufacturer ability.JBT Battery manufactures high quality, high performance custom lithium ion (Li-ion) and lithium polymer battery packs and assemblies. Using advanced mechanical and electronic design tools, our expert battery design team will optimize your battery packs for better manufacturability, safety, and reliability, giving you the most dependable and cost effective custom lithium ion packs for your needs.
Below is the basic knowledge for the custom lithium ion battery pack manufacturer (Li-Ion batteries) manufacturing.
Custom Lithium Ion Battery Packs (Li-Ion Batteries)
Lithium ion (Li-ion) battery packs are an advanced chemistry that provides increased performance over nickel- or lead-based chemistries at a price premium. Li-ion and lithium polymer batteries can have as much as twice the energy density of NiCd (nickel cadmium) batteries, have relatively low self-discharge rates, and are capable of high discharge currents.
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Lithium Battery Pack Chemistries
Custom lithium battery packs are available in several chemistries:
Lithium cobalt oxide provides the greatest energy density
Lithium manganese offers greater safety with lower energy density than lithium cobalt oxide
Lithium iron phosphate provides high discharge rate capabilities, as well as long cycle and calendar life
Mixed cathodes can be used to optimize lithium rechargeable cells’ specific performance characteristics
Technical Specifications
Cell voltage: 3.2 – 3.7V (nominal)
Capacity: 500mAh to 5000mAh
Energy by volume: 270 Wh/L to 324 Wh/L
Energy by weight: 105 Wh/kg to 130 Wh/kg
Cycle life: 300 – 1000 cycles
Self-discharge rate: approx. 10% per month
Operating temperature range: -20°C to 60°C
Preferred charge method: constant voltage/constant current
Size: variable
Applications: military, industrial, medical, consumer electronics
Note: Because of lithium’s inherent volatility and lithium ion’s high energy density, all custom lithium ion battery packs and cells require a special control circuit to manage the upper and lower voltage thresholds and to regulate operating currents and temperatures during charge and discharge.
Charge/Discharge Characteristics
In general, lithium ion charge circuits are of two-stage constant current/constant voltage design. Fully discharged cells take constant current charges at a rate of 1C (1x the rated capacity), until reaching their set voltage of between 3.6 and 4.2 volts (depending on specific chemistry), a process which takes approximately one hour. The batteries’ chargers then switch to constant voltage, with the current tapering off until the batteries are fully charged—approximately another two hours. The entire charging process is a fairly fast one, at about three hours. Lithium ion batteries may be removed from charge before they’re fully charged, with no side effects. However, Li-ion batteries cannot be trickle charged, as they do not tolerate overcharge conditions.
Discharge Characteristics for a Typical Li-ion 18650 Cell
Discharge Vs. Temperature Characteristics for a Typical Li-ion 18650 Cell
High Rate Discharge Characteristics for a Typical Li-ion 18650 Cell
Voltage Vs. Current Discharge Characteristics for a Typical Li-ion 18650 Cell
Custom Lithium Polymer Battery Packs
Lithium-ion-polymer batteries differ from lithium-ion batteries only in construction—it is not a unique and different chemistry. Li-polymer can be created in an array of chemistries, the most widely used of which is Li-cobalt. The difference in construction over conventional li-ion cells allows for lower cost, safer operation, and flexible packaging options; these custom lithium battery packs can be as thin as a credit card. These factors make custom lithium polymer battery packs and battery assemblies an increasingly popular choice for a wide range of applications.
Cell voltage: 3.2 – 3.7V (nominal)
Capacity: 500mAh to 3000mAh
Energy by volume: 250 Wh/L
Energy by weight: 120 Wh/kg
Cycle life: 500+ cycles
Self discharge rate: approx. N/A
Operating temperature range: -20°C to 60°C
Preferred charge method: constant voltage/constant current
Applications: audio-visual equipment, cellular phones, office automation, notebook PCs, PDAs, handheld devices
For more about custom lithium ion battery packs (Li-Ion batteries),you can pay a visit to the website custom lithium ion battery packs manufacturers at http://www.lithiumbatterychina.com
About Huizhou JB Battery Technology Limited
Huizhou JB Battery Technology Co., Ltd is custom lithium ion battery pack manufacturer from China.
Since 2008, Huizhou JB Battery Technology Limited has been designing and assembling custom battery solutions. We provide battery pack assemblies in all chemistries and for all electronic applications, all built to match our customers’ unique requirements. From medical devices and military equipment to emergency lighting systems and many industrial applications, we can design and manufacture the perfect portable power solution for your needs.
For Product inquiry,please contact JBT Battery:
Contact Person:David Liu
Tel:86-752-6521458
Mobile&What’s App:+86-13620492756
Add:Zone 6, Songshan Industrial Park, Zhongkai Development Zone, Huizhou City, Guangdong,China
Email:info@jbt-battery.net