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Electric bicycle battery professional builder
Electric bicycle battery professional builder
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.
There are five types of Li-Ion cells on current market based on chemistry of cathode materials. Please see the table below to see the details of each type cell.
| Characteristic | LFP (LiFePO4) | NMC (LiNiMnCoO2) | LCO (LiCoO2) | LMO (LiMn2O4) | LTO (Li4Ti5O12) | VRLA(Lead acid) |
| Voltage | 3.2VPC (operating range 2.5-3.65VPC) | 3.6VPC (operating range 3-4.2VPC) | 3.6VPC (operating range 3-4.2VPC) | 3.7VPC (operating range 3-4.2VPC) | 2.4VPC (operating range 1.8-2.85VPC) | 2.0VPC (operating range 1.8-2.4VPC) |
| Specific Energy | 110-130 Wh/kg | 150-220 Wh/kg | 150-200 Wh/kg | 100-150 Wh/kg | 50-80 Wh/kg | 30-50wh/kg |
| Energy Density | 333 Wh/l | 580 Wh/l | 560 Wh/l | 420 Wh/l | 177 Wh/l | 120wh/L |
| Charge Voltage | 3.5-3.65VPC | 4.2VPC | 4.2VPC | 4.2VPC | 2.85VPC | 2.4VPC |
| Cycle Life (depending on depth of discharge) | 2000-4000 | 1000-2000 | 500-1000 | 300-700 | 3000-7000 | 300-500 |
| Thermal Runaway | 270"C (518'F) | 210*C (410°F) | 150*C (302"F) | 250"C (482"F) | N/A | Lowest |
| Prone to Thermal Runaway | No | Yes | Yes | Yes | No | Yes |
| Environmental | Good | OK | OK | OK | Good | Bad |
| Main Applications | Motive power and stationary needing high currents and endurance | E-bikes, medical devices, EVs, industrial | Mobile phones, laptops, tablets, cameras | Power Tools, medical devices, electric powertrains | UPS, electric powertrains, solar steetlighting | UPS,solar system，electric equipement |
| Cost Level | $ | $ | $$ | $$ | $$$ | uncompetitive |
| Type | 12v 20Ah | 12v 50Ah | 12v 100Ah | 48v 12Ah | 48v 12Ah | 48v 20Ah | 48v 40Ah | 72v 18Ah | 72v 30Ah |
| Case | Plastic | Plastic | Plastic | Metal | Metal | Plastic | Metal | Metal | Metal |
| Size | 181*77*175mm | 223*150*178mm | 330*173*216mm | 175*149*178mm | 288*96*173mm | 235*158*165mm | 380*225*173mm | 190*160*177mm | 190*160*177mm |
| Charging Current | ≤20A | ≤25A | ≤50A | ≤20A | ≤20A | ≤20A | ≤30A | ≤20A | ≤30A |
| Discharge Current | ≤20A | ≤50A | ≤100A | ≤20A | ≤20A | ≤20A | ≤50A | ≤20A | ≤30A |
| Weight | 3kgs | 6.8kgs | 13.5kgs | 5.5kgs | 5.5kgs | 7.5kgs | 16.5kgs | 12.5kgs | 20kgs |
VODNO, one of the leading lifepo4 lithium battery pack manufacturers, providing a complete line of 12 ,24, 48 and 72 volt battery packs for different use. Contact and choose what you need.
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.
Since Lithium iron phosphate material is more durable, safe, fast charging in characteristics,the Lifepo4 battery pack has following major advantages:
Battery pack lifepo4 has about 1/3 the weight of lead-acid batteries.
Lithium iron phosphate battery pack does not contain any metallic chemical, it has no environment pollution.
The 1C cycle life of Lifepo4 battery is 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.
The LifePO4 battery pack is applicable for commercial or residential purposes.
1.Solar Energy Storage 2.Solar Street lighting 3.Light Electric Vehicle 4.E-bike/E-Rickshaw 5.Golf Cart 6.UPS