7.4V 603450 1200mAh 2S lipo battery for Smart Video Doorbell, Handheld POS Terminal, Portable Medical Monitor
| Model | VTC-LP603450-2S1P |
| Voltage | 7.4V |
| Capacity | 1200mAh |
| Max Size (Thickness x Width x Length) | 12.5X34.5X52mm |
| Operating Temperature | -20℃ to 60℃ |
| Standard Charge Rate | 0.5C |
| Standard Discharge Rate | 1C |
| Configuration | 2S1P |
| Weight | 50g |
7.4V 603450 1200mAh 2S lithium ion polymer for Smart Video Doorbell, Handheld POS Terminal, Portable Medical Monitor
Featuring high-energy density and compact size, 7.4V 1200mAh 603450 lithium ion polymer battery is high-capacity, small-size and lightweight to supply long-lasting power to satisfy the runtime of different applications. The 1200mAh lithium polymer battery can support a 3C continuous discharge current as a strong power supply for Robotics, Portable Equipment, GPS trackers, Medical Devices, IOT Devices, drones, and UAVs.
Long Cycle Life
Based on 0.5C/1C cycling, the VTCBATT 7.4V 1200mAh 603450 lipo battery can maintain over 80% capacity after 500 cycles and totally reach 1000 times cycle life.
Temperature Performance
VTCBATT 7.4V 1200mAh 603450 Lipo battery can be discharged from -20℃ to 60℃.
This wide temperature range performance enables the battery to operate in many conditions.
High energy density
Featuring high-energy density 200wh/kg-300wh/kg,the 7.4V 1200mAh 603450 lipo battery can deliver more power than other battery chemistries and support high drain current to power the devices strongly.
PCB with NTC
VTCBATT 7.4V 1200mAh 603450 lipo batteries are provided with NTC(Negative Temperature Coefficient), a kind of temperature sense to decrease the resistance as the temperature increases, allowing accurate temperature monitoring of the batteries. The NTC plays a critical role in improving the battery reliability and safety.
Full Certification & Extended Warranty
VTCBATT 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 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 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
VTCBATT not only focuses on customized design and excellent service to meet the diverse demands of different customers, but also devotes itself to precise and standardized manufacturing in every process to ensure the highest-quality batteries. Meanwhile, VTCBATT will provide comprehensive support from pre-sales to after-sales, focusing on customers’ feedback to establish long-term and win-win cooperation. VTCBATT professional sales and technical engineer teams will be your best custom battery experts to assist with reliable and fast services at any time.
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 7.4V 603450 1200mAh 2S lipo battery
7.4V 1200mAh LP603450 2S Lithium-ion Polymer Rechargeable Battery Pack
High-performance 2S series lithium polymer battery pack. Fully customized and engineered with high-density chemistry cells, a specialized series safety PCBA, integrated Seiko protection ICs, dual-MOSFET safety circuits, and 10K NTC thermistor. Optimized for premium IoT terminals, portable equipment, smart home sensors, and outdoor electronic systems.
1. Scope & Product Specification
This technical datasheet describes the parameters and testing standards for the 7.4V Lithium-ion Polymer Series Rechargeable Battery Pack, model VTC-LP603450-2S, manufactured and supplied by VTC Power Co., Ltd.
This series-connected battery pack uses two premium 3.7V LP603450 cells to deliver a stable 7.4V nominal voltage. It features an advanced series protective PCM, precise Seiko control electronics, customized lead-out wires, a 10K NTC temperature sensor, and a JST miniature connection interface to satisfy rigorous B2B commercial standards.
2. Drawing of Cell & Battery Pack Dimensions
Mechanical dimensions define the cell parameters and battery pack constraints. Standard tolerances apply.
| Item | Description | Specification / Dimension |
|---|---|---|
| A | Cell Tab Length | 4 ~ 8 mm |
| B | Cell Tab Pitch | 12 ± 1.5 mm |
| C | Cell Tab Width | 3 ± 0.2 mm |
| D | Cell Top Sealant Length | 4 ± 1 mm |
| T (Cell) | Cell Thickness (Max) | Initial: 6.0 mm | After 600 cycles: 6.4 mm |
| W (Cell) | Cell Width (Max) | 34.0 mm |
| H (Cell) | Cell Height (Max) | 50.0 mm |
| T (Pack) | Battery Pack Thickness (Max) | 12.5 mm |
| W (Pack) | Battery Pack Width (Max) | 34.5 mm |
| H (Pack) | Battery Pack Height (Max) | 52.5 mm |
| L | Wire Length | 52 ± 3 mm (UL1571 28AWG) |
3. Basic Performance Specifications
All parameters are measured at a standard temperature of 15~35°C, relative humidity 45~85%RH, and atmospheric pressure of 86~106KPa.
| NO. | Technical Parameter | Specification Value | Test Conditions / Notes |
|---|---|---|---|
| 1 | Rated Capacity | 1200 mAh | 0.2C discharge |
| 2 | Nominal Capacity | 1100 mAh | 0.2C discharge |
| 3 | Minimum Capacity | 1060 mAh | 0.2C discharge |
| 4 | Weight | ≈ 40 g | Approximate battery pack weight |
| 5 | Initial Impedance | ≤ 200 mΩ | AC 1KHz measured |
| 6 | Normal Voltage | 7.4 V | Standard operating voltage (2S pack) |
| 7 | Initial Voltage | ≥ 7.6 V | Voltage within 15 days of factory shipment |
| 8 | Limited Charge Voltage | 8.4 V | Maximum charging termination limit for 2S series |
| 9 | Standard Charging Method | 0.2C CC current charge to 8.4V, then CV charge till current declines to 0.01C | |
| 10 | Cut-off Voltage | 6.0 V | Load voltage when discharge is terminated |
| 11 | Standard Charging Current | 220 mA | CC charge to limited voltage, then CV charge |
| 12 | Standard Charging Time | 6 ~ 7 hours | CC-CV charge profile |
| 13 | Rapid Charging Current | 1100 mA | 1.0C rate rapid charging current |
| 14 | Rapid Charging Time | 1.5 hours | Fast charge profile |
| 15 | Standard Discharging Current | 220 mA | CC discharge to cut-off voltage |
| 16 | Max. Discharging Current | 1100 mA | 1.0C rate continuous discharge |
| 17 | Operating Temperature | Charge: 0 ~ 60 °C Discharge: -20 ~ 80 °C | Operating environment constraints |
| 18 | Operating Humidity Range | ≤ 90% RH | Non-condensing environment |
4. Electrochemical & Environmental Characteristics
Strict criteria applied during environmental qualification testing:
| No. | Test Item | Performance Criterion | Standardized Test Method |
|---|---|---|---|
| 1 | 0.2C Discharge Capacity | Discharging capacity is not less than normal capacity (1100 mAh) | After standard charging, rest 5 minutes, then discharge at 0.2C to cut-off voltage. |
| 2 | 1.0C Discharge Capacity | Discharging capacity is not less than 90% of normal capacity | After standard charging, rest 5 minutes, then discharge at 1.0C to cut-off voltage. |
| 3 | Cycle Life | ≥ 600 cycles | Charge: 0.2C CC-CV to limited voltage, current cut-off 0.02C. Discharge: 0.2C CC to cut-off voltage. Test terminates when capacity drops below 80% of rated capacity. |
| 4 | Self-discharge | Remaining capacity is ≥ 85% of initial capacity | After standard charging, store the cell for 28 days at 20 ± 5°C. Then discharge at 0.2C. |
| 5 | Constant Temp/Humidity | No explosion, no fire, no leakage. Capacity is ≥ 60% of initial capacity. | Standard charged cell stored for 48 hours at 40 ± 5°C and 90~95% RH. Then discharge at 1.0C. |
| 6 | Vibration Test | No explosion, no fire, no leakage. | Subject to 30 min vibration per axis (X, Y, Z). Freq: 10~30Hz, Amp: 0.38mm. Freq: 30~55Hz, Amp: 0.19mm. Rate: 1 oct/min. |
| 7 | Shock Test | No explosion, no fire, no leakage. | Acceleration: 100 m/s² (10G). Pulse duration: < 16 ms. Shock cycles: 2100 ± 10 times. |
5. Safety Characteristics
Note: Safety assessments are performed under strictly controlled test parameters using protective enclosures.
| No. | Safety Test | Pass Criterion | Test Conditions |
|---|---|---|---|
| 1 | Overcharge Test | No explosion, no fire | Discharge cell at 1.0C to cut-off voltage. Then charge at 1.0C continuously for 2.5 hours. |
| 2 | Short-circuit Test | No explosion, no fire | Standard charged cell is short-circuited externally with copper wire (resistance ≤ 80mΩ). Test runs until cell temperature falls 10°C below the peak temperature. |
| 3 | Thermal Test (Hot Box) | No explosion, no fire | Standard charged cell placed in hot box. Temp ramp: 5 ± 2°C/min. Termination temperature: 130 ± 2°C. Heat sustained for 30 minutes. |
6. PCBA Protection Circuit (PCM) Specifications
Equipped with premium Japanese Seiko high-precision voltage detection IC to secure full operation life cycle.
6.1 Electrical Characteristics
| No. | Protection Parameter | 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 (Auto-recovery) | – | ||
| 12 | Short Circuit Protection Delay Time | 196 | 280 | 364 | μs |
6.2 PCBA Parts List & Bill of Materials (BOM)
| No. | Location | Part Name | Specification Description | Package | Qty | Brand/Note |
|---|---|---|---|---|---|---|
| 1 | U1 | Protection IC | S8261DAI-M6T1U (Seiko IC) | SOT23-6 | 1 | Seiko (Japan) |
| 2 | U2 | MOSFET | dp8205 Dual Channel MOSFET | TSSOP-8 | 1 | DP MOSFET Dept |
| 3 | R1 | Resistor | 330 Ω ± 5% | 0603 | 1 | Yageo |
| 4 | R2 | Resistor | 470 Ω ± 5% | 0603 | 1 | Yageo |
| 5 | R3 | NTC Resistor | 10K Ω ± 1%, B3435 ± 1% | 0603 | 1 | 10K NTC |
| 6 | C1 | Capacitor | 0.1 μF / 25V ± 5% | 0603 | 1 | Murata |
| 7 | PCB | Printed Circuit | LP603450 Standard Board | / | 1 | FR4 RoHS Compliant |
7. Battery Pack Component Details
Bill of materials used for pack housing and interface connectors.
| No. | Component | Qty | Material Details / Specifications |
|---|---|---|---|
| 1 | LiPo Cell | 1 | VTC-LP603450 | 1200mAh Li-ion polymer cell |
| 2 | PCM Circuit | 1 | Fiber glass polymer compound circuit board (Pass RoHS) |
| 3 | Wire Leads | 3 | UL1571 28AWG Polythene and copper wires |
| 4 | Connector | 1 | JST-1.0-3P Connector (PA66, UL94V-0, White) |
8. Storage and Battery Safety Cautions
Proper cell management guarantees prolonged lifecycle performance and safeguards against field hazards.
8.1 Storage Temperature Thresholds
| No. | Storage Duration | Allowable Temp. | Recommended Storage Humidity |
|---|---|---|---|
| 1 | Short Term (≤ 1 month) | -20 ~ 45 °C | 65 ± 20% RH (Non-condensing environment) |
| 2 | Medium/Long Term (≤ 3 months) | -10 ~ 45 °C | |
| 3 | Recommended Storage | 15 ~ 35 °C |
8.2 Safety Instructions & Hazard Mitigation
- ◆
Charging Profile: Never charge the battery beyond the maximum voltage of 8.4 V. Reverse charging is strictly prohibited. - ◆
Discharge Handling: Do not force discharge past 6.0 V. Avoid short-circuiting the positive (+) and negative (-) gold-plated wire leads. - ◆
Mechanical Cautions: Do not crush, puncture, incinerate, open, drop, or solder directly onto the cell casing wrapper. - ◆
Do not deploy the battery inside heavy static-charge or high electromagnetic fields to prevent damaging the PCM circuit. - ◆
If electrolyte leakage occurs and contacts eyes, do not rub. Immediately flush eyes with running water and seek emergency medical aid. - ◆
If the cell emits odors, thermal heat, discoloration, swelling, or deformation during charging or use, terminate charging and isolate the cell immediately.
B2B Custom Assembly & Direct Wholesale
VTC Power provides comprehensive OEM/ODM custom solutions for the VTC-LP603450-2S. Contact our engineering team for custom wire harness design, connectors (JST, Molex, Hirose), NTC thermistors, and high-performance safety PCM integration.
