14500 800mAh 3.7V AA Li Ion Battery
14500 800mAh Li-Ion Battery | High-Energy Compact Power Solution
The 3.7V 800mAh AA 14500 Li-Ion Battery offers exceptional energy density, extended cycle life, and high-rate discharge performance — all in a compact AA-sized form factor. Designed for portable devices, smart electronics, and energy-efficient systems, this lithium-ion cell supports 3C continuous discharge, over 500 cycles with 80% capacity retention, and full OEM customization in voltage, capacity, labeling, and packaging. It’s the perfect upgrade for applications requiring both compactness and performance.
14500 Lithium Battery Specification
Model: 14500
Rated Capacity: 800mAh
Energy: 2.96Wh
Energy Density: 148Wh/kg
Minimal Capacity: 750mAh
Rated voltage: 3.7V
Discharge Cut-off Voltage: 2.75V
Charge Cut-off Voltage: 4.2V
Cycle Life: More than 500 cycles
Dimensions: Φ14*50mm
Weight: 20g
Internal Resistance: Less than 70m Ω
Standard Discharge Current: 0.2C (160mA)
Standard Charge Current: 0.2C (160mA)
Max Continuous Discharge Rate: 3C (2.4A)
Max Continuous Charge Current: 1C (0.8A)
Charging Temperature: 0 to 45℃;
Discharge Temperature: -20 to 65℃
Storage Temperature:
- -20℃~25℃: 12 months
- -20℃~45℃: 3 months
- -20℃~60 ℃: 1 month
Key Features — Battery Li Ion 14500
High Energy Density in a Compact Size
The 14500 Li-Ion battery delivers 800mAh capacity at 3.7V nominal voltage, achieving excellent energy-to-volume ratio in an AA-sized cell (14×50mm). This makes it ideal for flashlights, wireless sensors, medical equipment, and handheld devices, where space and efficiency matter most.
Long Cycle Life and Reliability
Built for durability, the 14500 lithium-ion cell maintains over 80% of its original capacity after 500 charge–discharge cycles, offering consistent long-term performance. This extended life significantly reduces maintenance costs and environmental impact.
High-Rate Continuous Discharge (3C)
Engineered for demanding applications, this cell supports 3C continuous discharge for sustained high-current performance. Whether powering motorized devices or LED flashlights, the 14500 Li-Ion ensures stable voltage output and low internal resistance even under heavy load.
Compact Size — Same as AA Battery
Despite its advanced chemistry and high energy density, this Li-ion cell retains the standard AA size (14×50mm), making it an easy replacement or upgrade for devices originally designed for NiMH or Alkaline batteries, provided the system supports 3.7V nominal voltage.
OEM & Custom Battery Pack Options
We provide full customization services to meet diverse project requirements:
Custom battery packs (series/parallel configurations)
Adjustable voltage, capacity, and dimensions
OEM branding, laser engraving, barcodes, labels, and sleeves
Custom connectors, plug types, and packaging
Tailored protective circuits (PCM/BMS) for safe integration
This flexibility makes the 14500 Li-Ion ideal for consumer electronics, IoT systems, backup power, and industrial devices.
Technical Comparison — 14500 AA Battery Chemistry Differences
Parameter | Li-Ion (14500) | Alkaline (AA) | LiFePO4 (14500) | NiCd (AA) | NiMH (AA) |
|---|---|---|---|---|---|
| Nominal Voltage | 3.7V | 1.5V | 3.2V | 1.2V | 1.2V |
| Capacity Range | 500–800mAh | 1800–3000mAh | 300–600mAh | 600–800mAh | 800–2800mAh |
| Energy Density | 120–190 Wh/kg | 90–130 Wh/kg | 80–150 Wh/kg | 45–60 Wh/kg | 60–100 Wh/kg |
| Internal Resistance | ≤70mΩ | 150–300mΩ | ≤60mΩ | ≤100mΩ | ≤100mΩ |
| Charge Rate (Max) | 1C | — | 1C | 0.2C | 0.5C |
| Discharge Rate (Max) | 3C | 0.5C | 3C | 1C | 3C |
| Weight | 16~20g | ~23g | ~20g | ~25g | ~27g |
| Working Temperature | -20°C ~ 60°C | 0°C ~ 50°C | -20°C ~ 60°C | -10°C ~ 45°C | -10°C ~ 50°C |
| Cycle Life | 500+ | Non-rechargeable | 3000+ | 500–800 | 500–1000 |
| Typical Applications | Flashlights, IoT, RC devices | Remotes, toys, clocks | Solar lights, UPS | Tools, radios | Cameras, toys, lights |
Frequently Asked Questions (FAQ)
Can I use 14500 instead of AA?
Only if your device supports 3.7V input. Standard AA devices (1.2–1.5V) are not compatible unless specifically designed for Li-ion voltage.
How long will this battery last?
It maintains over 80% capacity after 500 charge cycles, depending on usage and charging conditions.
Is fast charging supported?
Yes, this cell supports up to 1C charging and 3C discharging, allowing efficient power delivery.
Can I order customized battery packs or OEM labels?
Absolutely. We offer OEM/ODM customization for capacity, connectors, labeling, and full pack assembly to meet your product’s specifications.
What safety features are available?
Protection circuits (PCM/BMS) can be integrated for overcharge, over-discharge, and short-circuit protection, ensuring safe operation.
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