LFP32140 15000mAh Lithium Battery Cell for Solar Garden/Path Lights, Solar Street Light,Solar Energy Storage,Potable Equipment
| Model | LFP32140-15000LC |
| Voltage | 3.2V |
| Capacity | 15000mAh |
| Max Size (Thickness x Width x Length) | ∅32 mm × 140 mm（±0.2~0.5mm） |
| Operating Temperature | -20℃ to 60℃ |
| Standard Charge Rate | 0.5C (Maximum 1.0C) |
| Standard Discharge Rate | 0.5C (Maximum 2.0C) |
| Series/Parallel quantity | Unlimited |
| Weight | 295±10g |
Flexible order quantity to support prototype testing and mass production.
Batteries certified to UL,CE,UN38.3,MSDS,ROHS,IEC62133 and more global standards.
Customized size,current, case and working temperature.
7-10 days quick delivery.
Top 32140 LiFePO4 Battery Cell Manufacturers in China
The 32140 LiFePO4 battery is a high-performance cylindrical lithium iron phosphate battery, measuring 32mm in diameter and 140mm in height. Designed for versatility and longevity, it serves as a robust building block for various energy storage solutions, capable of being configured in series and parallel to meet specific voltage and capacity requirements for 6.4V,12V, 24V, 48V, and larger battery pack assemblies.
Rated at a nominal voltage of 3.2V and a nominal capacity of 15Ah (15,000mAh), this cell features a discharge cut-off voltage of approximately 2.0V and a maximum charge voltage of 3.65V. Engineered with a stable LiFePO4 chemical structure, the 32140 cell offers superior thermal stability, high discharge efficiency, and an extended cycle life—often exceeding 2,000 cycles at 80% Depth of Discharge (DOD).
High and Low Temperature Discharge Performance
This test highlights the battery’s robust operating temperature range. It delivers optimal, highly stable power output at elevated temperatures while maintaining a very respectable and dependable usable capacity in freezing conditions, proving its reliability across versatile and demanding environments.
Rate Discharge Performance: 1C vs. 2C Test
The data confirms the cell’s robust high-rate discharge capabilities. It can efficiently handle a continuous 2C discharge, delivering 100% of its rated capacity while maintaining a highly stable voltage output and safe thermal levels.
Cycle Life Performance: LFP32140 15000mAh Cell (1C Test)
The 1C cycle data demonstrates superior durability and cycle stability for the LFP32140 15000mAh cell. The current trend line suggests it will comfortably achieve thousands of cycles before reaching standard end-of-life thresholds (typically 80% capacity).
Lifepo4 battery Feature
Superior lifepo4 battery features only 3% self discharge rate per month. Ensure your equipment always ready to go even after several months of storage.Eliminate regular maintenance in water filling and acid check compared to traditional lead-acid batteries.
Lifepo4 battery is inherently safe chemistry against thermal runaway.
The integrated smart BMS can protect against extreme conditions to ensure ultimate safety for different power solutions.
Design without limits. The ultimate building block for custom power solutions. Infinite Series & Parallel combinations to meet your exact spec—no compromises, no wasted space.
Why Choose VTCBATT?
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
The VTCBATT LFP32140 15000mAh battery is widely used in solar garden and path lights,Solar Garden/Path Lights, Solar Street Light,Solar Energy Storage,Potable Equipment , electric toothbrushes, security, where high safety, long cycle life, and stable power output are essential. With a high-capacity and compact cylindrical design, it is ideal for consumer-grade outdoor decorative lighting and replacing traditional Ni-MH batteries to deliver faster charging and a significantly longer lifespan.
This battery supports flexible series and parallel configurations, with customized voltage, capacity, and intelligent BMS to precisely match your application requirements. Featuring excellent thermal stability, constant voltage output, deep cycle capability, and superior safety performance, the VTCBATT LFP32140 15000mAh battery ensures efficient energy management, long service life, and reliable operation for both consumer and industrial applications.
15000LC Product Test Report
| No. | Test Items | Testing Method | Criteria for Determination |
|---|---|---|---|
| 1 | Multiplier discharge | 1. Under standard test conditions, the battery shall be charged according to the standard charging procedure. It shall then be discharged at constant currents of 0.5C, 1C, and 2C respectively until reaching the cut-off voltage of 2.0 V. | 1C ≥ 98% discharge capacity at ambient temperature 2C ≥ 98% discharge capacity at ambient temperature |
| 2 | Cycle | Under standard test conditions, discharge at a constant current of 0.5C to a cut-off voltage of 2.0V, then rest for 10 minutes; charge at a constant current and voltage of 0.5C to 3.65V, with a cut-off current of 0.01C, then rest for 10 minutes; Discharge at 1C constant current to the cut-off voltage of 2.0V, then rest for 30 minutes; Cycle 2-3, perform 1500 cycles, recording the initial discharge capacity C1 and the discharge capacity after 1500 cycles C1500. | Cell capacity retention rate = (Final discharge capacity / Capacity of the previous three discharges × 100%) Capacity retention rate after 1500 cycles ≥ 80% |
| 3 | Discharge at 55°C | 1. Under standard test conditions, charge the battery according to the standard charging protocol; 2. Leave at 55°C for 4 hours; 3. Discharge at a constant current of 1C to the cut-off voltage of 2.0 V, recording the percentage of discharge capacity relative to that at room temperature. | The discharge capacity of the battery at 55°C is ≥99% of its discharge capacity at room temperature. |
| 4 | Low-temperature discharge at -10°C | 1. Under standard test conditions, charge the battery according to the standard charging protocol; 2. Allow to stand at -10±2°C for 4 hours; 3. Discharge at a constant current of 1 C to the cut-off voltage of 2.0 V, recording the percentage of discharge capacity relative to that at room temperature. | At -10°C low-temperature discharge, the discharge capacity is ≥70% of the discharge capacity at normal temperature. |
| 5 | High-temperature charge retention | 1. Under standard test conditions, charge the battery according to the standard charging protocol. After a 10-minute rest period, discharge at a constant current of 0.5C until the cut-off voltage of 2.0V is reached. This discharge capacity constitutes the battery’s initial discharge capacity C0. Recharge the battery using the standard charging protocol, allow a further 10-minute rest period, then measure the battery’s voltage and internal resistance to establish the initial voltage and initial internal resistance. Subsequently, after a 7-day storage period at 60±2°C, the battery’s voltage and internal resistance are measured under identical conditions. It is then discharged at a constant current of 0.5C to the cut-off voltage of 2.0V, with the resulting discharge capacity recorded as C1. Following a third standard charging cycle, the battery is again charged according to the standard protocol. After a 10-minute rest period, it is discharged at a constant current of 0.5C to the cut-off voltage of 2.0V, with the discharge capacity recorded as C2. | Remaining capacity / initial discharge capacity ≥ 95% Restored capacity / initial discharge capacity ≥ 96% |
| 6 | Charge retention at ambient temperature | Charge at 0.5C at ambient temperature. After 28 days of storage at room temperature, discharge at 0.5C until 2.0V is reached. Calculate the percentage of discharge capacity relative to the nominal capacity. Subsequently, perform a 0.5C charge followed by a 0.5C discharge. Calculate the percentage of recovered capacity relative to the nominal capacity. | a) Capacity retention rate ≥ 96%; b) Capacity recovery rate ≥ 97% |
| 7 | Short circuit | After standard charging, a short circuit between the positive and negative terminals of the battery using a wire with an internal resistance of less than 5mΩ shall be maintained for over 10 minutes. | No fire, no explosion. |
| 8 | Overcharging | 1. Following a full charge via standard charging, charge using a DC power supply at a current of 0.5C until either 1.5 times the charging limit voltage is reached or the total charging time reaches 1.5 hours. Cease charging and allow to rest for 6 hours. | No fire, no explosion. |
| 9 | Over-exposure | After standard charging, discharge at 1C for 1.5 hours, then observe for 1 hour. | No fire, no explosion. |
| 10 | Thermal shock | 1. Charge the battery according to the standard charging procedure; place the fully charged battery in an oven with gravity convection or circulating air for heating. The oven temperature shall be raised at a rate of 5±2°C per minute to 130±2°C, then maintained at this temperature for 30 minutes. | The battery does not catch fire or explode. |
| 11 | Heavy object impact | 1. Charge the battery using the standard charging method; 2. Place the fully charged battery horizontally on a flat surface. Position a steel rod with a diameter of 15.8mm crosswise atop the battery. Impact the battery by dropping a 9.1kg weight freely from a height of 610mm. | No explosions, no fires. |
| 12 | Fall | 1. Charge the battery according to the standard charging protocol; 2. Drop the battery from a height of 100cm onto hardwood, once each onto the X, Y, and Z planes; observe for 1 hour. | The battery does not catch fire or explode. |
| 13 | Temperature cycling | After charging the battery according to the standard charging protocol, place it within the temperature-controlled chamber. Within 60 minutes, the chamber temperature shall decrease to -40°C and maintain this temperature for 90 minutes. Within 60 minutes, the temperature of the temperature-controlled chamber shall rise to 25°C; within 90 minutes, the temperature of the temperature-controlled chamber shall rise to 85°C and be maintained at 85°C for 110 minutes; within 70 minutes, the temperature of the temperature-controlled chamber shall fall to 25°C. Repeat the above steps five times, observe for one hour, and visually inspect the battery’s appearance. | The battery shall exhibit no loss of weight, no leakage of electrolyte, no loss of gas, no disintegration, no cracking, no explosion, and no ignition. Furthermore, the open-circuit voltage of each battery after testing shall not be less than 90% of its pre-test voltage. |
| 14 | Acupuncture | a) The battery shall be charged according to standard procedures; b) Testing shall be conducted under the following conditions: 1) Needle penetration direction: Pressure applied perpendicular to the battery plate orientation; 2) A 5mm steel needle shall be used; 3) Penetration severity: Penetration through the battery casing or internal short-circuiting. | The battery does not catch fire or explode. |
