Telecommunication station Lithium ion battery 4.8kwh Lithium lifepo4 rechargeable batteries 48volt 100ah

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Telecommunication station li-ion lifepo4  battery 48volt 100ah specification:

NO
Items
Characteristics
1
Normal capacity
 100Ah
2
Nominal energy
 4.8KWh
3
Nominal voltage
48V (LFP-15S)
4
Internal resistance
≤50mΩ @1kHz AC
5
Normal charge voltage
54.75±0.3V
6
Float charge voltage(for Standby use)
51.75±0.3V
7
Allowed MAX charge current
70A
8
Recommended charge current
≤35A
9
Allowed MAX discharge current
70A
10
End of discharge voltage
37.5V
11
Dimension
Length 482±2 mm
height  222±2mm
Depth   520±2mm
12
Weight
Approx. 55.0kg
13
Operation temperature
Charge
0~45℃
Discharge
-20~60℃
14
Self-discharge rate
Residual capacity
≤2%/Month; ≤10%/ year
15
Storage environment
≤1month
-20~+35℃、45~75%RH
≥3month
-10~+35℃、45~75%RH
Recommend  environment
15~30℃、45~75%RH

More related Lithium phosphate rechargeable batteries 50ah 100ah 150ah 

Model NormalVolatge Rated Capacity Standard Discharge current Dimension
QSLF4820-1U 51.2V 20Ah 20A 442*530*45mm
QSLF4830-1U 51.2V 30Ah 20A 442*420*134mm
QSLF4850-3U 51.2V 50Ah 30A 442*420*134mm
QSLF4875-5U 51.2V 75Ah 50A 442*420*222mm
QSLF48100 51.2V 100Ah 50A 442*420*222mm
QSLF48150 51.2V 150Ah 70A 442*580*222mm

How Lithium-ion Batteries Work

Lithium-ion battery packs come in all shapes and sizes, but they all look about the same on the inside. If you were to take apart a laptop battery pack (something that we DO NOT recommend because of the possibility of shorting out a battery and starting a fire) you would find the following:

  • The lithium-ion cells can be either cylindrical batteries that look almost identical to AA cells, or they can be prismatic, which means they are square or rectangular The computer, which comprises:
  • One or more temperature sensors to monitor the battery temperature
  • voltage converter and regulator circuit to maintain safe levels of voltage and current
  • A shielded notebook connector that lets power and information flow in and out of the battery pack
  • voltage tap, which monitors the energy capacity of individual cells in the battery pack
  • battery charge state monitor, which is a small computer handles the whole charging process to make sure the batteries charge as quickly and fully as possible.

We have CE/BIS/UL/MSDS certificates forli-ion batteries.

GENERAL ADVANTAGES OF LITHIUM ION BATTERY

1. Smaller and lighter: Li-ion battery is lighter than other rechargeable batteries in consideration of battery capacity. This makes it more practical in portable consumer electronic devices in which physical specifications such as weight and form factor are considered important selling points.

2. High energy density: Li-ion battery has higher energy density than other rechargeable batteries. This means having high power capacity without being too bulky. This is suitable for use in power-hungry devices such as laptops and smartphones. Advancements in technology open potential for higher capacities.

3. Low self-discharge: Li-ion battery also has a low self-discharge rate of about 1.5 percent per month. This means that the battery has a longer shelf life when not in used because it discharges slowly than other rechargeable batteries. Take note that nickel-metal hydride battery has a self-discharge of 20 percent per month.

4. Zero to low memory effect: Li-ion battery has zero to minimal memory effect. Take note than memory effect is a phenomenon observed in rechargeable batteries in which they lose their maximum energy capacity when repeated recharged after being only partially discharged. This memory effect is common in nickel-metal hydride rechargeable batteries such as NiCd and NiMH.

5. Quick charging: Li-ion battery is quicker to charge than other rechargeable batteries. It actually takes a fraction of a time to charge when compared to counterparts.

6. High open-circuit voltage: Li-ion battery has a chemistry that results in higher open-circuit voltage than other aqueous batteries such as lead acid, nickel-metal hydride, and nickel-cadmium.

7. Longer lifespan: Li-ion battery can typically handle hundreds of charge-discharge cycles. Some lithium ion batteries loss 30 percent of their capacity after 1000 cycles while more advanced lithium ion batteries still have better capacity only after 5000 cycles.

GENERAL DISADVANTAGES OF LITHIUM ION BATTERY

1. Expensive: Li-ion battery is expensive to manufacture. In fact, the total product cost of this battery is around 40 percent higher than nickel-metal hydride battery. Take note that this battery needs an on-board computer circuitry to manage and ensure that voltage and current are well within the safe limits. This circuitry makes it more expensive.

2. Sensitivity to high temperature: Li-ion battery is susceptible to the downside of too much heat caused by overheating of the device or overcharging. Heat causes the cells or packs of this battery to degrade faster than they normally would.

3. Aging effect: Li-ion battery will naturally degrade as soon as they leave the factory. This means that it is not completely durable despite longer charge-discharge lifecycle because of this normal degradation that transpires whether consumers use them or not. Storage in a cool place at 40 percent charge reduces the aging effect.

4. Deep discharge: Li-ion battery has low self-discharge. The general integrity of this battery remains intact even if partially discharged. However, deep discharge or when the voltage of a lithium ion cell drops below a certain level, it becomes unusable.

5. Safety concerns: Li-ion battery may explode when overheated or overcharged. This is because gasses formed by electrolyte decomposition increases the internal pressure of the cell. Overheating or internal short circuit can also ignite the electrolyte and cause fire. This risk might also subject li-ion batteries to transportation restrictions, especially when shipped in larger quantities.

What is a BMS?

For example :


BMS stands for battery management system, this is the brain of our deep cycle lithium battery. The BMS protects the lithium cells from getting damaged in several scenarios. From low or high voltage, low or high temperatures, or if there is a short in the system. The BMS will shut off the battery to protect the li-ion cells and the user of the battery from unsafe operating conditions.

The BMS also regulates the amount of power you can take out of the battery. The BMS on our 100 amp-hour battery is rated to 100 amps continuous, 200 amps for 30 seconds and any higher loads for ½ second.

BMS also keeps all of the cells in balance. At the top of each charge cycle, the BMS reduces the charging rate in cells that have been topped off first, letting the rest of the cells catch up. This ensures that the cells are always in balance, and maintains the quality and efficiency of the pack.

BMS Circuit and Working

BMS circuit

BMS Circuit with Adjustable Voltage

bms circuit with adjustable voltage

Packing

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

Delivery

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 .

FAQ

1,Q: What’s the main battery product in QSPOWER?

A: Rechargeable battery. Li-ion, Lipo battery for solar storage and electric vehicles .

2,Q: What is batteries lithium 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 the lifepo4 rechargebale lithium iron phosphate battery 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 battery 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 for the lifepo4 cells battery ?

A: Yes, we have MOQ limit for mass production, but it depends on battery model. Please contact us for details.for examples .for completely battery pack the moq is 1 sample is fine for order;for 18650 cylinderical cells moq is 100pcs for order.

6,Q: How about the lead time for both sample order battery and mass order batteries?

A: Samples will takes 10-15 business days. Mass production will takes 20-25 days. It depends on how many  battery quantity you will placed.

7,Q: How about shipping and delivery time for the battery sample and batteries mass order ?

A: Generally, battery will be shipped via Express, such as DHL, TNT, FedEx and UPS, delivery time is 4-8 business days.for sample and mass order  Or DDP service, delivery time is 15-20 business days. Airline and sea shipping also available.

8,Q: What about after-sale service for  battery customers ?

A: We will offer you 3-5 year guarantee(based on your battery materials). If there are any problems, please inform us, we will offer you positive solutions.

Our battery show pictures

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