32700 LiFePO4 Battery: 3.2V 6000mAh Specs, 5C Discharge & OEM Guide
Published by A&S Power | LiFePO4 Battery Technology
What Is a 32700 LiFePO4 Battery?
A 32700 battery is a cylindrical lithium iron phosphate (LiFePO4) cell named after its physical dimensions: 32mm in diameter and 70mm in height. It is larger than the common 18650 cell (18mm × 65mm) and sits between the 26650 (26mm × 65mm) and larger prismatic cells in terms of size and capacity.
The standard 32700 LiFePO4 cell delivers 3.2V nominal voltage and 6000mAh capacity, which equals 19.2Wh of energy. Compared to lithium-ion (NMC/NCA) cells of the same size, LiFePO4 offers lower energy density but significantly better thermal stability, longer cycle life, and inherent safety advantages.
At A&S Power, we manufacture two grades of the AS32700: a high-power version rated for 30A continuous discharge (5C) with ultra-low internal resistance (≤3mΩ), and a standard version optimized for 0.5C to 1C discharge in energy-focused applications. This guide covers both.
AS32700 Technical Specifications
The table below shows the full specifications of the AS32700 high-power LiFePO4 cell. All data is from actual production testing at our Dongguan facility.
| Parameter | AS32700 High-Power | AS32700 Standard |
|---|---|---|
| Battery Type | LiFePO4 (Lithium Iron Phosphate) | LiFePO4 (Lithium Iron Phosphate) |
| Part Number | AS32700 | AS32700 |
| Nominal Voltage | 3.20V | 3.20V |
| Typical Capacity | 6000mAh (19.2Wh) @ 0.5C | 6000mAh (19.2Wh) |
| Internal Resistance | ≤3mΩ | Typical ≤15mΩ |
| Charge Voltage | 3.65V | 3.65V |
| Standard Charge Current | 3.0A (0.5C) | 0.2C to 0.5C (1.2A–3A) |
| Max Charge Current | 6.0A (1.0C) | 0.5C (3A) |
| Continuous Discharge | 30.0A (5.0C) | 0.5C to 1.0C (3A–6A) |
| Peak Discharge (10s) | 60.0A (10.0C) | Not specified |
| Discharge Cut-off Voltage | 2.50V | 2.50V |
| Dimensions | 32mm (D) × 70mm (H) | 32mm (D) × 70mm (H) |
| Weight | Approx. 141g ±2g | Approx. 140g |
| Operating Temperature | Charge: 0~45°C / Discharge: -10~50°C | Charge: 0~45°C / Discharge: -10~50°C |
| Storage Temperature | -10°C to +45°C | 0°C to 35°C (recommended) |
| Protection Circuit | No PCM (optional upon request) | No PCM (optional upon request) |
Note: The high-power AS32700 is designed for applications requiring high current delivery (power tools, e-bikes, searchlights). The standard version is optimized for energy density and cost in lower-drain applications (solar storage, IoT, Bluetooth speakers). Choose based on your device’s actual current draw.
5C/10C High-Drain Discharge Performance
The standout feature of the AS32700 high-power cell is its discharge capability. With an internal resistance of ≤3mΩ, this cell can deliver sustained high current without excessive voltage sag or heat buildup.
Continuous Discharge: 30A (5C)
At 30A continuous discharge, the AS32700 maintains a stable voltage platform. The ultra-low internal resistance means that at 30A, the voltage drop due to internal resistance is only approximately 0.09V (30A × 0.003Ω), keeping the operating voltage well above the 2.50V cut-off for most of the discharge curve. This makes it suitable for high-drain 32700 battery applications such as power tools and electric bike conversion kits.
Peak Discharge: 60A (10C) for 10 Seconds
For short bursts of high current — such as motor startup or peak power demand in cordless tools — the cell supports up to 60A for 10 seconds. This is a 10C discharge rate, which is exceptionally high for a 6000mAh LiFePO4 cell. The low internal resistance is critical here: at 60A, the resistive voltage drop is approximately 0.18V, still within safe operating limits for short durations.
Why Internal Resistance Matters
Internal resistance (IR) is the single most important spec for high-drain performance. A cell with 15mΩ IR (typical for standard-grade cells) would drop 0.45V at 30A and 0.90V at 60A, causing severe voltage sag, heat generation, and potentially triggering the undervoltage protection prematurely. The AS32700’s ≤3mΩ IR ensures efficient power delivery even at maximum discharge rates. For comparison, you can read more about discharge rates and C-rating in our LiPo battery voltage and C-rating guide.
Cycle Life & Longevity
LiFePO4 chemistry is known for its long cycle life. The AS32700 is engineered for 2000 or more charge-discharge cycles before capacity degrades to 80% of the rated value. This is 4 to 10 times longer than typical lithium-ion (NMC) cells, which usually last 300 to 500 cycles.
| Factor | Impact on Cycle Life |
|---|---|
| Depth of Discharge (DoD) | Discharging below 20% stresses the cell. Keeping DoD between 20% and 80% can double cycle life. |
| Charge Rate | Charging above 1C (6A) generates heat and accelerates degradation. Stick to 0.5C standard charge for longest life. |
| Temperature | Operating above 45°C or below -10°C reduces cycle life. Storage at 0°C to 35°C is recommended. |
| BMS / Protection Circuit | A proper BMS prevents overcharge, over-discharge, and short circuits, all of which cause permanent damage. |
| Storage Charge Level | Store at 40-60% charge (approximately 3.2V to 3.3V per cell), not fully charged or fully depleted. |
For a deeper understanding of how cycle life, shelf life, and service life differ across battery chemistries, see our complete guide to lithium battery lifespan.
32700 vs 26650 vs 18650: Which Cylindrical Cell Should You Use?
Choosing the right cylindrical cell size depends on your device’s space constraints, capacity requirements, and discharge current. Here is how the three most common sizes compare:
| Parameter | 18650 | 26650 | 32700 (AS32700) |
|---|---|---|---|
| Dimensions | 18mm × 65mm | 26mm × 65mm | 32mm × 70mm |
| Typical Capacity (LiFePO4) | 1100–1500mAh | 3000–3800mAh | 6000mAh |
| Energy (3.2V) | 3.5–4.8Wh | 9.6–12.2Wh | 19.2Wh |
| Weight | 40–45g | 85–100g | ~141g |
| Max Continuous Discharge (High-Power Grade) | 15–20A | 25–30A | 30A (5C) |
| Best For | Compact devices, flashlights, vape | Mid-size devices, flashlights, power banks | High-capacity packs, solar storage, e-bikes, power tools |
The 32700 offers the highest capacity and energy of the three standard cylindrical sizes. For applications where space allows, a single 32700 can replace multiple 18650 cells in parallel, simplifying pack assembly and reducing the number of interconnections. If you are also considering lithium polymer (pouch) cells for your project, our LiPo vs Li-Ion comparison guide can help you decide.
A&S Power also manufactures the AS26650 3.2V 5000mAh LiFePO4 battery for applications that need a smaller form factor. For 18650-based designs, see our 18650 battery guide for specifications and selection advice.
Common Applications for the 32700 LiFePO4 Battery
High-Power Version (5C/10C)
- Cordless power tools — drills, impact drivers, rotary hammers that require 30A+ bursts
- E-bikes and electric scooters — 13S4P or similar configurations for 48V packs
- High-power searchlights and fishing lights — sustained high-current LED operation
- 12V lead-acid replacement — 4 cells in series = 12.8V for car mini fans, inflators, and small DC equipment
- Portable power stations — high-discharge capability for AC inverter loads
Standard Version (0.5C–1C)
- Solar energy storage — solar lawn lights, surveillance camera backup, field data collection
- Large Bluetooth speakers — high-capacity for extended playtime
- IoT and GPS tracking devices — long cycle life for remote deployments
- Portable medical devices — monitors, nebulizers, testing instruments
- DIY battery packs — custom series/parallel configurations for hobbyist and prototype projects
For OEM buyers building medical devices, our custom medical battery solutions page covers certification requirements (ISO 13485, IEC 60601) and design considerations for healthcare applications.
OEM/ODM Customization for 32700 Battery Packs
As a 32700 rechargeable battery supplier and 32700 LiFePO4 battery manufacturer based in Dongguan, China, A&S Power offers full OEM/ODM customization for the AS32700. Whether you need bare cells or fully assembled battery packs, we can adapt the cell to your project requirements.
Customization Options
| Customization | Details |
|---|---|
| Protection Circuit (PCM/BMS) | Add PCM with over-charge, over-discharge, over-current, and short-circuit protection. Multi-cell packs include a full BMS with cell balancing. |
| Lead Wires & Connectors | Solder wires (UL1007, silicone) or attach JST, Molex, Anderson, XT60, or custom connectors per your assembly. |
| NTC Thermistor | Add 10K NTC temperature sensor for intelligent thermal management in battery packs. |
| Insulation & Labeling | Custom shrink-wrap with your logo, model number, and regulatory markings (CE, RoHS, UN38.3). |
| Multi-cell Packs | 4S = 12.8V, 8S = 25.6V, 13S = 41.6V, 16S = 51.2V. Parallel combinations for higher capacity. Custom enclosures available. |
| Packaging | Custom retail packaging, blister packs, or bulk industrial packaging with your brand artwork. |
Certifications & Compliance
All AS32700 cells are manufactured under ISO 9001 quality management. We support UN38.3 transportation testing, CE, RoHS, and IEC 62133 certification for battery packs. For OEM buyers shipping to the European Union, we can provide documentation supporting EU Battery Regulation (2023/1542) due diligence requirements. For a detailed overview of certification and compliance requirements, see our lithium battery safety and compliance guide for OEM buyers.
If you are building a custom battery pack using 32700 cells, our custom lithium battery pack assembly and BMS integration guide covers the design process from concept to production.
Frequently Asked Questions
What is a 32700 battery?
A 32700 battery is a cylindrical lithium iron phosphate (LiFePO4) cell measuring 32mm in diameter and 70mm in height. It typically offers 3.2V nominal voltage and 6000mAh capacity (19.2Wh), making it larger than an 18650 and suitable for high-capacity applications.
How much does a 32700 LiFePO4 battery weigh?
The A&S Power AS32700 high-power cell weighs approximately 141g (±2g). Standard-grade 32700 cells typically weigh between 135g and 150g depending on the manufacturer and internal construction.
What is the maximum discharge current of a 32700 LiFePO4 battery?
The A&S Power AS32700 high-power cell supports 30A continuous discharge (5C) and 60A peak discharge for up to 10 seconds (10C). Standard-grade 32700 cells are typically rated for 0.5C to 1C continuous discharge (3A to 6A).
How many cycles does a 32700 LiFePO4 battery last?
LiFePO4 chemistry typically delivers 2000 or more charge-discharge cycles before capacity drops to 80% of the rated value. The actual cycle life depends on depth of discharge, charge rate, temperature, and whether a proper BMS is used.
Can I use a 32700 battery to replace a lead-acid battery?
Yes. Four 32700 LiFePO4 cells connected in series produce 12.8V nominal, which is a common replacement for 12V lead-acid batteries. LiFePO4 offers higher energy density, longer cycle life, and lighter weight compared to lead-acid, but requires a BMS for safe operation.
What is the charging voltage for a 32700 LiFePO4 battery?
The standard charge voltage for a 32700 LiFePO4 cell is 3.65V. The standard charge current is 0.5C (3A for a 6000mAh cell), with a maximum charge current of 1C (6A). The discharge cut-off voltage is 2.50V.
Source the AS32700 from A&S Power
The AS32700 3.2V 6000mAh LiFePO4 battery is in stock at our Dongguan facility, available as bare cells or fully customized packs. We support small-batch prototyping and high-volume OEM production with consistent quality and competitive pricing.
- High-power grade: 30A continuous (5C), 60A peak (10C), ≤3mΩ IR
- Standard grade: 0.5C–1C discharge for energy-focused applications
- 2000+ cycle life, 19.2Wh energy, 141g weight
- UN38.3, CE, RoHS, IEC 62133 supported
- OEM/ODM: PCM/BMS, connectors, wires, labeling, custom packs