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14500 Battery & Charger – AA-Sized Li-ion Cells + Dedicated Chargers, The High-Voltage Rechargeable Upgrade
Welcome to our 14500 Battery & Charger collection. The 14500 lithium-ion cell (approx. 14mm diameter × 50mm length) is the rechargeable Li-ion version of the standard AA battery form factor. Sharing identical dimensions with AA cells, it delivers a 3.7V nominal voltage (roughly 3× NiMH AA) and usable capacities from 600mAh to 1000mAh—the ideal upgrade from disposable alkalines for legacy AA-powered devices. This collection offers a full range of 14500 cells—High-Capacity NMC, High-Drain IMR/INR, Protected, and inherently safe LiFePO₄—along with dedicated Li-ion chargers compatible with 14500/AA/10440/16340 and more. Ideal for high-performance flashlights, headlamps, wireless mice, remote controls, digital cameras, electric toys, medical devices, and various portable electronics.
Core Advantages of 14500 Batteries
- Standard AA Size – Perfect Compatibility: Approximately 14mm × 50mm—identical to standard AA batteries. Direct drop-in replacement for most AA-powered devices.
- High Voltage Platform: NMC/IMR versions deliver a nominal 3.7V (full charge 4.2V)—approximately 3× the voltage of NiMH AA (1.2V)—providing more power and brighter illumination.
- Rechargeable – Economical & Eco-Friendly: Supports 500–1,000+ charge/discharge cycles. Replaces disposable alkalines for lower long-term cost and reduced battery waste.
- Flexible Chemistry Options: Available in high-energy NMC, high-drain IMR/INR, protected, and inherently safe LiFePO₄ (3.2V) formulations.
- Low Self-Discharge: Monthly self-discharge as low as 3% ensures readiness after extended storage—ideal for intermittently used devices.
- Lightweight Design: Weighing only 18g–22g per cell—lighter than NiMH AA—perfect for weight-sensitive portable devices.
Core Advantages of 14500 Dedicated Chargers
- Precision Charging Management: CC/CV profile with automatic battery type detection (Li-ion/LiFePO₄) and auto-termination to prevent overcharging.
- Multiple Safety Protections: Overcharge, over-discharge, overcurrent, short-circuit, reverse polarity, and overheat protection.
- Wide Size Compatibility: Supports 14500, 10440, 16340, 18350, 18650, and more—one charger for multiple formats.
- Independent Charging Channels: Multi-bay chargers control each slot independently—mix cells of different charge levels and sizes.
- LCD Digital Display: Real-time monitoring of voltage, current, and charged capacity.
14500 Li-ion vs. AA Alkaline vs. AA NiMH
| Parameter | 14500 Li-ion | AA Alkaline | AA NiMH |
|---|---|---|---|
| Nominal Voltage | 3.2V (LiFePO₄) / 3.7V (NMC/IMR) | 1.5V | 1.2V |
| Typical Capacity | 600mAh – 1000mAh | 2000mAh – 3000mAh | 1500mAh – 2500mAh |
| Rechargeable | ✅ Yes (500–1,000+) | ❌ No | ✅ Yes |
| Energy (Wh) | 2.2Wh – 3.7Wh | 3.0Wh – 4.5Wh | 1.8Wh – 3.0Wh |
| Weight | ~18g–22g | ~23g | ~26g–30g |
| Best For | 3.7V high-voltage devices | Low-drain daily use | High-drain frequent use |
Popular 14500 Battery & Charger Models – Quick Reference
| Category | Model/Spec | Features |
|---|---|---|
| High Capacity | INR14500 1000mAh | 1000mAh / 1A–2A, top choice for flashlights & digital devices |
| Balanced | ICR14500 900mAh | 900mAh / 0.5A–1A, general consumer electronics |
| High Drain | IMR14500 650mAh | 650mAh / 2A–3A, high-output flashlights & vape compatible |
| LiFePO₄ | IFR14500 600mAh | 600mAh / 0.5A–1A, 3.2V safe chemistry for solar/medical |
| Protected | Protected 14500 | 800–900mAh / 0.5A–1A, built-in protection for consumer safety |
| 2-Bay Charger | XTAR VC2 | LCD display, supports 14500/18650, USB input |
| 4-Bay Charger | Nitecore D4 | Independent channels, auto-detection, LCD |
| Single-Bay Portable | XTAR MC1 | USB input, ultra-portable, perfect for travel |
Typical Specifications Range (14500 Battery & Charger)
| Parameter | 14500 Battery | Compatible Charger |
|---|---|---|
| Nominal Voltage | 3.2V (LiFePO₄) / 3.6V–3.7V (NMC/IMR) | Auto-detection |
| Capacity Range | 600mAh – 1000mAh | — |
| Continuous Discharge | 0.5A – 3A | — |
| Input Voltage | — | USB 5V / DC 12V |
| Charge Current | — | 0.25A – 1A (adjustable/adaptive) |
| Size Compatibility | 14mm × 50mm | 14500/AA/10440/16340 and more |
Typical Applications
| Application | Recommended Battery Type | Recommended Charger |
|---|---|---|
| High-performance flashlights / EDC lights | High Capacity / High Drain | 2-bay LCD charger |
| Headlamps / bike lights | Protected / Balanced | 2-bay smart charger |
| Wireless mice / remote controls | Balanced / Protected | Single-bay USB portable |
| Digital cameras / flash units | High Capacity | 2-bay digital charger |
| Electric toys / models | High Drain | 4-bay charger |
| Medical devices / portable instruments | LiFePO₄ / Protected | LiFePO₄-compatible charger |
| Solar storage / emergency lighting | LiFePO₄ | 4-bay charger |
How to Choose the Right 14500 Battery & Charger?
| Your Requirement | Recommended Battery Type | Recommended Charger |
|---|---|---|
| I need maximum capacity for flashlights or digital devices | High Capacity (1000mAh) | 2-bay LCD charger |
| I need high current for bright flashlights or vaping | High Drain IMR | 2-bay digital charger |
| I want protected plug-and-play cells for daily use | Protected | 2-bay smart charger |
| Safety is critical (medical/emergency) | LiFePO₄ | Charger with LiFePO₄ mode |
| I need portable charging for travel | Any 14500 | Single-bay USB portable charger |
| I need to charge multiple different cell types | — | Multi-bay independent channel charger |
| I need bulk quantities or custom packs | Contact our sales team | — |
⚠️ 14500 Battery & Charger Safety Guidelines
- Voltage Compatibility – Special Attention Required: 14500 nominal voltage is 3.7V (full charge 4.2V), whereas standard AA alkaline is 1.5V. Inserting a 14500 into voltage-sensitive devices may cause overvoltage damage. Always confirm your device supports 3.7V Li-ion before use. Some flashlights support dual compatibility—check the manual.
- Do Not Mix Chemistries: 3.2V LiFePO₄ and 3.7V NMC/IMR cells cannot be mixed or charged with the same settings. Verify charger mode before charging.
- Use a Dedicated Li-ion Charger: 14500 cells require a Li-ion-specific charger. Do not use NiMH/NiCd chargers.
- Avoid Over-Discharge: Stop discharging when voltage drops below 2.5V–2.8V (NMC/IMR) or 2.0V–2.5V (LiFePO₄). Recharge promptly.
- Avoid Short Circuits and High Temperatures: Do not short the terminals. Keep away from fire, heat, and moisture.
- Discontinue if Damaged: Stop using cells with torn wraps, dents, or leakage. Recycle responsibly.
Why Choose Our 14500 Battery & Charger Collection?
- Genuine Grade-A Cells: Batteries from Vapcell, Efest, Samsung, LG, and other Tier-1 manufacturers. Chargers from XTAR, Nitecore, and professional brands.
- Fully Tested & Matched: Every battery batch undergoes capacity grading, IR testing, and voltage sorting.
- One-Stop Shopping: Cells, chargers, and accessories all in one place.
- Flexible Purchasing: Single-cell retail, multi-pack discounts, tiered bulk pricing, and custom pack assembly.
- Certified & Documented: UN38.3, MSDS, CE, RoHS documentation provided.
- Expert Technical Support: Guidance on cell selection, charger matching, and after-sales service.
👇👇👇 Browse the product list below to find the perfect 14500 Battery & Charger combo for your application. For volume quotes or custom pack solutions, please contact our engineering team.
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