|Model||Rated Capacity||NormalVolatge||Max discharge current||Max discharge current||Cell weight|
These cells have BIS certifications
Some cells with CE certification
The cylindrical cell continues to be one of the most widely used packaging styles of today. With its superiority making it easy to manufacture and have excellent mechanical stability. Tubular cylinders can withstand high internal stress without deformation.
Many lithium and nickel-based cylindrical cells include a positive thermal coefficient (PTC) switch. When exposed to excessive current, the normally conductive polymer heats up and becomes resistive, stopping the current flow and acting as short circuit protection. Once the short is removed, the PTC cools down and returns to the conductive state.
Most cylindrical cells also feature a pressure relief mechanism, and the simplest design utilizes a membrane seal that ruptures under high pressure. Leakage and dry-out may occur after the membrane breaks. Re-sealable vents with a spring-loaded valve are the preferred design. Some consumer Li-ion cells include the Charge Interrupt Device (CID) that physically and irreversibly disconnect the cell when activated to an unsafe pressure builds up.
Introduced in the early 1990s, the modern prismatic cell satisfies the demand for thinner sizes. Wrapped in elegant packages resembling a box of chewing gum or a small chocolate bar, prismatic cells make optimal use of space by using the layered approach. Other designs are wound and flattened into a pseudo-prismatic jelly roll. These cells are predominantly found in mobile phones, tablets and low-profile laptops ranging from 800mAh to 4,000mAh. No universal format exists and each manufacturer designs its own.
Prismatic cells are also available in large formats. Packaged in welded aluminum housings, the cells deliver capacities of 20–50Ah and are primarily used for electric powertrains in hybrid and electric vehicles. Figure 5 shows the prismatic cell.
Prismatic cells are the most popular today due to their large capacity. The shape can connect easily four batteries at once to form a battery pack.
The cylindrical cell design has good cycling ability, offers a long calendar life and is economical, but is heavy and has low packaging density due to space cavities.
The cylindrical cell battery has a strong and robust advantage as its casing has protected. Batteries, in this case, are more resistant to working at hot temperatures. Resistance to shocks is also excellent, then this battery is often familiar to use on electric vehicles. Many cells are combined in series and parallel to increase battery voltage and capacity. If one cell is damaged, the impact on the whole package is low.
Typical applications for the cylindrical cell are power tools, medical instruments, laptops, and e-bikes. To allow variations within a given size, manufacturers use partial cell lengths, such as half and three-quarter formats, and nickel-cadmium provides the largest variety of cell choices. Some spilled over to nickel-metal-hydride, but not to lithium-ion as this chemistry established its own formats.
Prismatic cells consist of many positive and negative electrodes that are flanked together making it possible for short circuit and inconsistency. Prismatic cells die faster because thermal management is less efficient and relatively sensitive to deformation in high-pressure situations. Other disadvantages include a limited number of standard sizes and higher average hourly wattage prices. BMS is also complicated to handle this sell because of the capacity that is owned.
Selecting Your Cell
Most often, choosing your lithium battery’s cell design comes down to space, cost and safety considerations.
If your lithium application requires strong power, performance and longevity with less concern for use of space, consider picking up a cylindrical cell. If overloading becomes a concern, opt for cylindrical’s improved safety profile. However, if your lithium application requires power packed into a small space and you’re able to handle the cost, prismatic is your best bet.
Right now, the cost-effective cylindrical model controls market share. However, as new products create a need for increasingly space-conscious solutions, battery technology advances and prices change, demand for prismatic cells is expected to increase.
The batteries, packs, and chargers you are purchasing are for professional use.
You are supposed to have sufficient knowledge in handling the products.
You will only charge the batteries and packs in a fire proof container. You will not leave the product on wooden materials or a carpet environment that would help induce the spread of fire.
You will not put or use products in places adjacent to flammable materials and you will take caution, and wear protective cloths, glass, and gloves.
You will not leave the batteries, packs, and chargers unattended during charging and using.
When you want to use Li-ion batteries to make packs a Protective Circuit Board (PCB) is required.
Any modifications of battery, packs, and chargers will void the warranty.
If you make battery packs using the single Li-ion or Li-polymer cells and PCB from us, we are not responsible for the final battery pack performance and liability as the workmanship and assembly details could lead to defects.
Herculesi is NOT responsible for any damages and consequences caused by misuse.
Make sure you DIY with correct polarity. (Negative polarity located at the top end)
Don’t use NiMH or Li-ion smart charger charge LiFePO4 cell/pack.
Wrong type of charger used may cause cell damaged.
You must limit discharging rate below Max rate
Please read more info about LiFePO4 battery
Seaworthy Carton to fully protect batteries on the way.
Each battery packed in polyfoam ,then put in 3 layer brown box,some related pcs put in 5-layer strong brown outer carton
1..by UPS/DHL/FEDEX( It takes 3-5 days to arrive after all details confirmed)
2.by air cargo( It takes about one week to arrive after all details confirmed)
3.By sea shipment ( It takes about one month to arrive after received the d eposit and confirmed all details.
4.Port:FOB Hongkong or CIF terms.
5.Shipment date within 30days for mass production .
6.Shipment date within 7-10days for testinng samples .
1,Q: What’s the main product in QS?
A: Rechargeable battery. Li-ion, Lipo battery and power battery pack.
2,Q: What is overcharge?
A: After charge, tested the batteries’ initial state and capacity. Charge to 10.0V at 3C current, then charge to 0.01C at CV mode. Observe changes in battery appearance.
3,Q: What is over discharge?
A: After charge, test the batteries’ initial state. When the batteries are normal, discharge to 0V at 0.5C. Observe changes in battery appearance
4,Q: Can I have a sample order?
A: Yes, we accept sample order to test and check quality. Batteries can be made as require.
5,Q: Do you have MOQ limit?
A: Yes, we have MOQ limit for mass production, but it depends on battery model. Please contact us for details.
6,Q: How about the lead time?
A: Samples will takes 5-7 business days. Mass production will takes 15-25 days. It depends on quantity.
7,Q: How about shipping and delivery time?
A: Generally, battery will be shipped via Express, such as DHL, TNT, FedEx and UPS, delivery time is 3-5 business days. Or DDP service, delivery time is 11-15 business days. Airline and sea shipping also available.
8,Q: What about after-sale service?
A: We will offer you 1 year guarantee. If there are any problems, please inform us, we will offer you positive solutions.
Application for :
1) Energy Storage: UPS , backup ,power station.
2) EV : Golf trolleys , Electric scooters .Electric Bike ,Electric tricyle ,Electric Motor.
3) Solar System,Wind Energy Storage,Solar/Storage Home System, Solar Street Light.
4) Telecommunications Base Stations.
5) General Energy Storage (Such as: Back-up Power, Miner’s lamp, portable power supply, digital products etc.)