VTC-LP122565 3.7V 2000mAh Li-ion Polymer Battery Pack for cold-chain data loggers, handheld terminals, wireless sensor modules
| Parameter | Specification |
|---|---|
| Model | VTC-LP122565 |
| Battery Type | Li-ion Polymer Rechargeable Battery Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 2000mAh at 0.2C discharge |
| Pack Weight | Approx. 39g |
| Pack Initial Impedance | ≤160mΩ at 3.7V AC 1KHz |
| Initial Voltage | ≥3.8V |
| Limited Charge Voltage | 4.2V |
| Discharge Cut-off Voltage | 3.0V |
| Standard Discharging Current | 400mA |
| Cycle Life | More than 600 cycles to 80% of rated capacity under the specified 0.2C test method |
| Charging Temperature | 0-45°C |
| Discharging Temperature | -20-60°C |
-20℃ 3.7V 2000mAh LP122565 Low temperature lithium ion polymer for cold-chain data loggers, handheld terminals, wireless sensor modules
The VTC-LP122565 is a 3.7V 2000mAh Li-ion polymer battery pack designed for compact rechargeable equipment that needs a connectorized soft-pack format. The datasheet specifies a rated capacity of 2100mAh, nominal capacity of 2000mAh, minimum capacity of 1950mAh, 4.2V limited charge voltage, 3.0V discharge cut-off voltage, 400mA standard charge/discharge current, and 2000mA rapid charge and maximum discharge current. The pack measures up to 12.2mm thickness, 25.5mm width, and 67.0mm height, with 55+/-3mm UL3302 26AWG wires and a JST/EHR-2 connector. It includes a protection PCB using S8261DAI protection IC and dp8205 MOSFET, with short-circuit protection available. VTCBATT supports factory supply, sample development, connector matching, labeling, OEM/ODM customization, and stable batch production for equipment manufacturers and battery wholesalers.
LP122565 3.7V 2000mAh Li-ion Polymer Rechargeable Battery
| Item | Description | Dimension |
|---|---|---|
| A | Cell Tab Length | 4~8 mm |
| B | Cell Tab Pitch | 10.5±1.5 mm |
| C | Cell Tab Width | 4±0.2 mm |
| D | Cell Top Sealent Length | 4±1 mm |
| T | Cell Thickness max. | Initial 12.0 mm; after 600 cycle life 12.6 mm |
| W | Cell Width max. | 25.0 mm |
| H | Cell Height max. | 65.0 mm |
Low-Temperature Device Power
The VTC-LP122565 pack supports discharge operation from -20 to 60 degC, making it a practical rechargeable power source for cold-chain data loggers, outdoor monitoring modules, and field electronics that may operate beyond room-temperature conditions. Its 3.7V 2000mAh nominal format balances compact size with useful runtime for low-to-moderate load devices.
OEM Assembly Ready
VTCBATT can support OEM/ODM pack development around wire length, connector matching, label content, protection circuit configuration, and sample testing. The documented 55+/-3mm UL3302 26AWG wire and JST/EHR-2 connector provide a clear baseline for customization, wholesale supply, and stable batch production for device manufacturers.
Protected Pack Design
The pack includes a protection PCB using S8261DAI protection IC and dp8205 MOSFET, with short-circuit protection listed in the PCB specification. This structure gives OEM equipment builders a ready-to-integrate battery pack format with defined over-charge, over-discharge, over-current, and short-circuit protection parameters from the datasheet.
Slim Pack Integration
With a pack size of 12.2mm max thickness, 25.5mm max width, and 67.0mm max height, this lithium polymer battery pack is suited to slim enclosures where cylindrical cells are difficult to fit. The wire-and-connector output helps engineers place the battery near a PCB or within a shallow battery bay during device layout.
Full Certification & Extended Warranty
VTCBATT 3.7V 1000mAh 603450T -40℃ Low temperature LiPo batteries meet global certifications including CB, CE, UL, and UN38.3, and offer a 14-month warranty—two months longer than standard—to maximize customer confidence and profit.
VTCBATT 3.7V 1000mAh 603450T -40℃ Low temperature lipo battery passed all the major global certifications, such as CB, CE, EN61000, IEC62133, MSDS, UN38.3, ROHS, UL, BIS, KC Certification, which makes your product more competitive.
Compared to a normal 12-month warranty, VTCBATT 3.7V 1000mAh 603450T -40℃ Low temperature lipo batteries have 14-month warranty and two extra months for shipping and customs clearance ,which ensure the customer’s profit.
VTCBATT Production and Service
From the raw materials production to the final battery assembly, VTCBATT adopts automatic production and strict quality control to ensure the highest quality grade in battery safety, reliability, and stability.
Focusing on customized battery manufacturing for 20 years, VTCBATT established long-term and win-win cooperation with worldwide customers by offering prompt pre-sales proposals and excellent after-sales services in long-term value.
From the raw materials mixing to the cell test, VTCBATT adopts an automatic manufacturing process to maximize production efficiency and enhance the batteries quality, safety, and reliability. The entire manufacturing process is monitored and 100% tested before flowing to the next procedure to ensure zero defects before delivery.
Over the past 20 years, VTCBATT has built strong partnerships with customers in more than 50 countries worldwide. With reliable quality, responsive service, and tailored battery solutions, we have earned the trust of our clients—many of whom have maintained long-term cooperation and lasting friendships with us for over a decade. Together, we continue to grow and move forward toward a brighter future.
Application for 3.7V 2000mAh LP122565 Low temperature polymer lithium ion battery
This lithium polymer battery pack is suitable for cold-chain temperature data loggers, compact handheld terminals, wireless sensor modules, portable inspection tools, security devices, tracking modules, and other rechargeable electronics where a thin soft-pack cell with wire and connector output is easier to integrate than a cylindrical cell. Its 3.7V nominal voltage, 2000mAh nominal capacity, 12.2mm max pack thickness, and JST/EHR-2 connector make it practical for slim enclosures and serviceable module designs, while the -20 to 60 degC discharge temperature range supports devices used outside normal indoor conditions. VTCBATT can adapt wire length, connector type, NTC requirements, protection circuit design, label content, and sample testing for different device layouts, then provide factory-direct battery wholesale and batch supply for distributors, brand owners, and OEM electronics manufacturers.
Related Product
| Revision | 1.0 |
| Date | 2026-6-13 |
| Prepared by | Tianyun Wei |
| Approved by | Youman Zhao |
Address: No. 10, JinLing Road, Zhongkai Industrial Park, Huizhou City, China
SZ Office: 1205C, Hengming One, Aixin Road, Longgang, Shenzhen
Tel: 0086-0755-84534832 Email: info@vtcpower.com
Data Sheet Modified List
| Revision | Modified content | Date | Approved by |
|---|---|---|---|
| 1.0 | The first release | 2026.6.13 | Youman Zhao |
1. Scope
This specification describes the technological parameters and testing standards for the lithium-ion polymer rechargeable battery, VTC-LP122565, manufactured and supplied by VTC Power Co., Ltd.
2. Products Specified
| Type | Li-ion Polymer Rechargeable battery |
| Name | VTC-LP122565 |
3. Drawing of Cell
| Item | Description | Dimension |
|---|---|---|
| A | Cell Tab Length | 4~8 mm |
| B | Cell Tab Pitch | 10.5±1.5 mm |
| C | Cell Tab Width | 4±0.2 mm |
| D | Cell Top Sealent Length | 4±1 mm |
| T | Cell Thickness max. | Initial 12.0 mm; after 600 cycle life 12.6 mm |
| W | Cell Width max. | 25.0 mm |
| H | Cell Height max. | 65.0 mm |
4. Basic Performance
| No. | Item | Specifications | Note |
|---|---|---|---|
| 1 | Rated Capacity | 2100mAh | 0.2C discharge |
| 2 | Nominal Capacity | 2000mAh | 0.2C discharge |
| 3 | Min. Capacity | 1950mAh | 0.2C discharge |
| 4 | Pack Weight | ≈39g | |
| 5 | Pack Initial Impedance | ≤160mΩ | 3.7V AC 1KHz measured |
| 6 | Normal Voltage | 3.7V | |
| 7 | Initial Voltage | ≥3.8V | |
| 8 | Limited Charge Voltage | 4.2V | Voltage of CC charge to CV charge |
| 9 | Standard Charging Method | 0.2C CC current charge to 4.2V, then CV charge till current declines to 0.01C | |
| 10 | Cut-off Voltage | 3.0V | Load voltage when discharge ended |
| 11 | Standard Charging Current | 400mA | |
| 12 | Standard Charging Time | 6~7 hours | CC charge to 4.2V, then CV charge till current declines to less than 0.01C |
| 13 | Rapid Charging Current | 2000mA | |
| 14 | Rapid Charging Time | 1.5 hours | |
| 15 | Standard Discharging Current | 400mA | CC discharge to 3.0V |
| 16 | Max. Discharging Current | 2000mA | |
| 17 | Operating Temperature Range | Charging: 0~45°C Discharging: -20~60°C | |
| 18 | Operating Humidity Range | ≤90%RH |
5. Electrical Characteristics of the Cell
5.1 Normal Test Conditions
| Temperature | Relative Humidity | Atmospheric Pressure |
|---|---|---|
| 15~35°C | 45~85% RH | 86~106KPa |
5.2 Electrochemical Characteristics
| No. | Item | Criterion | Test Method |
|---|---|---|---|
| 1 | 0.2C discharging capacity | Discharging capacity is not less than normal capacity | After standard charging, rest 5 minutes, then 0.2C discharge to cut-off voltage. |
| 2 | 1.0C discharging capacity | Discharging capacity is not less than 90% of normal capacity | After standard charging, rest 5 minutes, then 1.0C discharge to cut-off voltage. |
| 3 | Cycle life | The cycle times is not less than 600 | Charge: 0.2C CC-CV charge to 4.2V, current declines to 0.02C. Discharge: 0.2C CC discharge to 3.0V. Stop when discharge capacity is reduced to 80% of rated capacity. |
| 4 | Self-discharge | Discharging capacity is not less than 85% of initial capacity | After standard charging, rest the cell for 28 days at 20±5°C, then 0.2C discharge to cut-off voltage and record capacity. |
5.3 Environment Characteristics
| No. | Item | Criterion | Test Method |
|---|---|---|---|
| 1 | Constant temperature and humidity test | No explosion, no fire, no leakage; discharging capacity not less than 60% of initial capacity | After standard charging, rest for 48 hours at 40±5°C and 90~95%RH, then 1.0C discharge to cut-off voltage. |
| 2 | Vibration test | No explosion, no fire, no leakage | After standard charging, fixed to vibration table for 30 minutes per XYZ axis. Frequency rate 1oct/min; 10Hz~30Hz at 0.38mm; 30Hz~55Hz at 0.19mm. |
| 3 | Shock test | No explosion, no fire, no leakage | Acceleration 100m/s²; pulse lasting time <16ms; shock times 2100±10 times. |
5.4 Safety Characteristics (Cell)
| No. | Item | Criterion | Test Method |
|---|---|---|---|
| 1 | Overcharge test | No explosion, no fire | Discharge 1.0C to 3.0V; charge 1.0C for 2.5H. |
| 2 | Short-circuit test | No explosion, no fire | After standard charging, short positive and negative tabs with copper wire of not more than 80mΩ resistance. Stop when temperature falls 10°C lower than the peak. |
| 3 | Thermal test | No explosion, no fire | After standard charging, put cell into hot box. Temperature rate 5±2°C/min; ending temperature 130±2°C; keep for 30 minutes. |
Note: Above testing of safety characteristics must be with protective equipment.
6. Drawing of Battery Pack
| Item | Description | Dimension |
|---|---|---|
| T | Battery pack Thickness max. | 12.2mm |
| W | Battery pack Width max. | 25.5mm |
| H | Battery pack Height max. | 67.0mm |
| L | Wire Length | 55±3mm |
7. Pack List
| No. | Item | Quantity | Material | Specification |
|---|---|---|---|---|
| 1 | Li-ion polymer cell | 1 | VTC-LP122565 | 2000mAh |
| 2 | PCB | 1 | Fiber glass polymer compound circuit board | Pass RoHS |
| 3 | Wire | 2 | Polythene and copper | UL3302 26AWG |
| 4 | Connector | 1 | PA66, UL94V-0, natural white | JST/EHR-2 |
8. PCB Specification
8.1 Electrical Characteristics
| No. | Item | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| 1 | Over-charge Protection Voltage | 4.260 | 4.280 | 4.300 | V |
| 2 | Over-charge Release Voltage | 4.130 | 4.180 | 4.230 | V |
| 3 | Over-charge Protection Delay Time | 0.7 | 1 | 1.3 | s |
| 4 | Over-discharge Protection Voltage | 2.950 | 3.000 | 3.050 | V |
| 5 | Over-discharge Release Voltage | 2.900 | 3.000 | 3.100 | V |
| 6 | Over-discharge Protection Delay Time | 179 | 256 | 333 | ms |
| 7 | Over-current Protection for Discharge | 3.0 | 4.0 | 5.0 | A |
| 8 | Internal Resistance | / | 45 | 60 | mΩ |
| 9 | Operation Static Current | 3 | 5 | 7 | µA |
| 10 | Current consumption (Power down) | / | / | 0.5 | µA |
| 11 | Short Circuit Protection | Available | |||
| 12 | Short Circuit Protection Delay Time | 196 | 280 | 364 | µs |
8.2 Pin Explanation
| Symbol | Explanation | Symbol | Explanation |
|---|---|---|---|
| P+ | Battery output/charging positive pole | B+ | Cell positive pole |
| P- | Battery output/charging negative pole | B- | Cell negative pole |
8.3 Circuit Diagram
8.4 PCBA Parts List
| No. | Location | Part Name | Specification | Pack Type | Quantity | Maker/remark |
|---|---|---|---|---|---|---|
| 1 | U1 | Protection IC | S8261DAI-M6T1U | SOT23-6 | 1 | Seiko |
| 2 | U2 | MOSFET | dp8205 | TSSOP-8 | 1 | DP |
| 3 | R1 | Resistor | 330Ω±5% | 0603 | 1 | |
| 4 | R2 | Resistor | 470Ω±5% | 0603 | 1 | |
| 5 | C1 | Capacitor | 0.1µF/25V ±5% | 0603 | 1 | |
| 6 | PCB | Print circuit board | / | / | 1 | / |
9. Storage and Shipment Requirement
| Item | Storage environment | Requirement |
|---|---|---|
| Short period less than 1 month | -20°C~+45°C | 90% RH Max. |
| Long period more than 3 months | -10°C~+45°C | 90% RH Max. |
| Recommend storage | 15°C~35°C | 85% RH Max. |
For long time storage, the cell storage voltage should be 3.6~3.9V and the cell should be stored under the normal test condition in section 5.1. It is recommended to charge the cell every six months.
10. Warning and Cautions
10.1 Warning
- Do not immerse the battery in water or seawater. Store it in a cool and dry environment when not in use.
- Do not discard or leave the battery near a heat source such as fire or a heater.
- Use a battery charger specifically designed for this purpose.
- Do not reverse the positive and negative terminals, connect the battery directly to an electrical outlet, or short the terminals with metal objects.
- Do not transport or store the battery together with metal objects such as necklaces or hairpins.
- Do not strike, throw, trample, directly solder, pierce, disassemble, bend, fold, open, or deform the battery or sealing edge.
- Do not use damaged cells or mix with other different battery models.
- Battery replacement shall be done only by the cell supplier or device supplier, never by the user.
- Keep the battery away from babies. Any components contacting the two edges must be insulated.
10.2 Cautions
- Do not use or leave the battery at very high temperature conditions, such as strong direct sunlight or a vehicle in extremely hot conditions.
- Do not use it in locations with strong electrostatic or magnetic conditions; safety devices may be damaged.
- If electrolyte gets into the eyes, rinse with clean water immediately and seek medical attention.
- If the battery gives off odor, generates heat, becomes discolored or deformed, or appears abnormal during use, recharging, or storage, remove it from the device or charger and stop using it.
- If terminals are dirty, clean them with a dry cloth before use to avoid poor connection.
- Discharged batteries may cause fire; tape the terminals to insulate them.
