3.2V 50AH LiFePO4 Cell with Long Life and High Capacity,L148.4 X
H101.5 X W39.7
VHR 3914895LFP series lithium iron phosphate cores of Hengrui
Technology adopt square shell
design, combined with the company's advanced automated production
equipment and strict production
process, have the characteristics of high energy density, high
security, long cycle life, and are suitable
for large energy storage systems, communication base stations, UPS,
pure electric vehicles and other
application scenarios. It solves many problems existing in lithium
iron phosphate batteries, such as
short battery life, poor consistency, poor safety, and inability to
charge and discharge at high current.
- Multi-measures in structure design to ensure battery cell’s
safety, i.e. anti-explosion valve is applied,
over-temperature protection mechanism is provided, and
circuit-breaker is provided to cut-off at
extreme conditions；
- High rate discharge performance,the discharge capacity of the
cell, which is measured with
discharge current of 3C with 2.5V cut-off voltage ≥90% Rated
Capacity.
- Good Large Pulse Discharge Current (Short Pulse) Performance,
When the cell temperature is
less than 50℃: maximum discharge Current 5C of time is 5s；
- Low self-discharge performance,Voltage difference after
corresponding days rest at 25℃± 2℃,
the Capacity ≥95% Rated Capacity
| Item | Specification | Condition |
| Nominal Capacity | 50Ah | - 25℃
- Discharge Current: 50A
|
| Minimal Capacity | 50Ah |
| Nominal Voltage | 3.2V | - |
| Operating Voltage Range | 2.5V-3.65V | Temperature > -20℃ |
| 2.0V-3.65V | Temperature ≤ -20℃ |
| Internal Impedance (1kHz) | ≤1 (mΩ) | Fresh Cell |
| Average Internal Impedance (1kHz) | 0.9 (mΩ) | Fresh Cell |
| Ex-work Capacity | 50% SOC | N.A. |
| Operating Temperature (Charge) | 0℃-60℃ | Refer to 2.2 |
| Operating Temperature (Discharge) | -20℃-60℃ | Refer to 2.3 |
| Weight | Approximately 1.1 Kgs ± 0.02 Kgs | N.A. |
| Dimension | Refer to 3.2 | N.A. |
| Item | Specification | Condition |
| Standard Charge Current | 1/3 C (16.5A) | 25℃ |
| Standard Charge Voltage | Limited voltage 3.65V/Cell | - |
| Standard Charge Mode | Unless otherwise specified, “Standard Charge” shall consist of
continuous charging at constant current of 1/3C to limited voltage
3.65V/Cell, and then the cell shall be charged at constant voltage
of 3.65V/Cell while tapering the charge current. Charging shall be
terminated when the charging current has tapered to 0.05C. For test
purposes, charging shall be performed at 25℃± 2℃. |
| Standard Charge Temperature | 25 ± 2℃ | Cell Temperature |
| Max. Temperature Range | 0℃~60℃ | Refer to 2.2.7 |
| Max. Charge Voltage | Max. 3.7V | No matter what charge modes, charging shall be terminated when the
cell voltage exceeds the Max. Charge Voltage |
- Other Charge Modes and Conditions
| Cell Temperature | Standard Charge | Fast Charge | Boost Charge |
| ＜-20℃ | No Charge Allowed | No Charge Allowed | No Charge Allowed |
| -20℃~ -15℃ | Charge Current: 0.02C | No Charge Allowed | No Charge Allowed |
| -15℃~0℃ | Charge Current: 0.04C | No Charge Allowed | No Charge Allowed |
| 0℃~15℃ | Charge Current: 0.2C | Charge Current: 1C | 2C Charge is allowed when voltage is lower than 3.2V |
| 15℃~45℃ | Charge Current: 0.5C | Charge Current: 1C | 2C Charge is allowed when voltage is lower than 3.2V |
| 45℃~60℃ | Charge Current: 0.2C | Charge Current: 0.5C | No Charge Allowed |
| ＞60℃ | No Charge Allowed |
| Item | Specification | Condition |
| Standard Discharge Current | 1C | 25℃ |
| Max. Continuous Discharge Current | 2C | - |
| Max. Pulse Discharge Current (Long Pulse) | 4C | Maximum discharge time is 30s. |
| Max. Pulse Discharge Current (Short Pulse) | 5C | When the cell temperature is less than 50℃: maximum discharge time
is 5s. |
| Discharge Cut-off Voltage | 2.5V/Cell | - |
| Standard Charge Temperature | 25 ± 2℃ | Cell Temperature |
| Max. Temperature Range | -20℃~60℃ | No matter what discharge modes (continuous discharge or pulse
discharge), discharging shall be terminated when the cell
temperature exceeds the Max. Temperature Range. |
- Discharge D-Rate Performance @ RT
Ambient: RT
Test Method:
-Discharge: 1C 2.5V Cut-off；Rest:60min；
-Charge : 0.5C 3.65V CC-CV 0.05C Cut-off；Rest 60min；
-Discharge: 3C 2.5V Cut-off;
- Charge C-Rate Performance @ RT
Ambient: RT
Test Method:
-Discharge:1C 2.5V Cut-off；Rest:60min；
-Charge: 2C 3.65V Cut-off；Rest 60min；
-Discharge: 1C 2.5V Cut-off;
-Please read the user manual carefully before using the devices
equipped with the battery cells.
-Please read the specific charging device’s user manual carefully
before charging.
-When the cell is not charged after long exposure to the charger,
discontinue charging.
-Please check the positive (+) and negative (-) direction before
packing.
-When a lead plate or wire is connected to the cell for packing,
check out insulation not to make
short-circuit.
-Battery cell must be stored separately.
-Battery cell must be stored in a dry area with low temperature
(≤25°C) environment for long-term
storage.
-Do not expose the battery cell in direct sunlight or heat.
-Do not use the battery cell in high static energy environment
where the protection device can be
damaged.
-When rust or smell is detected on first use, please return the
product to the seller immediately.
-Keep the battery cell out of reach of children and pets.
-When battery cell life span shortens after long period of usage,
please exchange to new cell.
-No metal objects (rings, watches, and other metal accessories,
etc.) can be worn during the
handling of battery cells.
-“First-in, First-out” rule shall be followed during the packing
process.
-Charge time should not be longer than specified in the manual.
-Do not expose the battery cell out of the temperature range
specified in the specification.
