The 3.2V 18650 1800mAh LiFePO4 Battery (Flat Top) is a rechargeable lithium iron phosphate cell designed for compatible equipment requiring an IFR18650-size 3.2-volt battery. With a nominal capacity of 1800mAh and approximately 5.76Wh of energy, this battery provides dependable reusable power for emergency lighting, solar lighting, custom battery packs, backup power equipment, industrial electronics, and other applications specifically designed for 3.2V LiFePO4 cells.
This cylindrical 18650 battery features a flat-top positive terminal and measures approximately 18.3mm in diameter by 65.2mm in length. LiFePO4 chemistry offers excellent cycle life, good thermal stability, low self-discharge, and a stable discharge voltage. The battery charges to approximately 3.65V and must be used with equipment and chargers specifically designed for 3.2V LiFePO4 chemistry. It is not interchangeable with conventional 3.6V or 3.7V lithium-ion 18650 batteries.
| Battery Size: | 18650 |
| Model / Designation: | IFR18650 |
| Battery Type: | Rechargeable |
| Chemistry: | Lithium Iron Phosphate (LiFePO4) |
| Nominal Voltage: | 3.2 Volt |
| Rated Capacity: | 1800 mAh |
| Nominal Energy: | Approximately 5.76 Wh |
| Maximum Charge Voltage: | 3.65 Volt |
| Standard Charge Current: | Approximately 900 mA (0.5C) |
| Maximum Charge Current: | Approximately 1.8 A (1C) |
| Standard Discharge Current: | Approximately 900 mA (0.5C) |
| Maximum Continuous Discharge: | Approximately 5.4 A (3C) |
| Discharge Cut-Off Voltage: | Approximately 2.5 Volt |
| Diameter: | Approximately 18.3 mm (0.72") |
| Length: | Approximately 65.2 mm (2.57") |
| Typical Weight: | Approximately 42–44 g (1.48–1.55 oz.) |
| Terminal Style: | Flat Top |
| Cell Format: | Cylindrical 18650 |
| Charge Temperature: | Approximately 0°C to +55°C (32°F to +131°F) |
| Discharge Temperature: | Approximately -20°C to +60°C (-4°F to +140°F) |
| Rechargeable: | Yes |
| Required Charger: | 3.2V LiFePO4-Compatible Charger |
| Battery Quantity: | 1 Battery |
Key Features:
- Rechargeable 18650 lithium iron phosphate battery
- 3.2-volt nominal output
- 1800mAh rated capacity
- Approximately 5.76Wh nominal energy
- Flat-top terminal configuration
- LiFePO4 chemistry provides excellent thermal and chemical stability
- Stable discharge voltage for compatible electronic equipment
- Designed for repeated charging and discharging
- Long cycle life compared with many conventional rechargeable battery chemistries
- Low self-discharge characteristics for dependable storage
- Approximately 18.3mm diameter × 65.2mm length
- Maximum charge voltage of approximately 3.65V
- Suitable for compatible emergency lighting, solar equipment, backup systems, industrial electronics, and custom battery packs
- Requires a charger specifically designed for 3.2V LiFePO4 rechargeable cells
Common Applications:
- Emergency Lighting Equipment
- Emergency Exit Lighting
- Solar Lighting Systems
- Solar Garden & Landscape Lights Designed for 3.2V LiFePO4 Cells
- Backup Power Equipment
- Industrial Electronic Equipment
- Custom LiFePO4 Battery Packs
- Portable Electronic Equipment Designed for 3.2V 18650 Cells
- Electronic Projects & Battery Assemblies
- Other Equipment Specifically Designed for 3.2V 18650 LiFePO4 Batteries
Battery Designations:
- 18650
- IFR18650
- IFR18650-1800
- 3.2V 18650
- 18650 LiFePO4
- 18650 1800mAh LiFePO4
- 3.2V 1800mAh IFR18650
Important Compatibility Note:
- This is a 3.2V LiFePO4 18650 battery. It is NOT a direct replacement for conventional 3.6V or 3.7V lithium-ion 18650 batteries.
- This battery has a flat-top terminal. Verify that your equipment requires a flat-top 18650 cell before purchasing.
- Verify the original battery's voltage, chemistry, physical dimensions, capacity requirements, and terminal configuration before replacement.
- Use only a charger or charging circuit specifically designed for 3.2V LiFePO4 batteries with a maximum charging voltage of approximately 3.65V per cell.
- Do not charge this battery with a standard 4.2V lithium-ion charger intended for 3.6V or 3.7V Li-ion cells.
- For battery-pack assembly, ensure that the cells, protection circuitry, charger, and equipment are designed for LiFePO4 chemistry.
Package Includes:
- 1 × 3.2V 18650 1800mAh LiFePO4 Rechargeable Battery – Flat Top
