Rechargeable Li‑ION Battery Nitecore 14500 (AA) 3.6V 800mAh for Oral‑B iO Series

Rechargeable Nitecore 14500 Li‑ION cell provides a compact, high-energy power source with a nominal voltage of 3.6V and a rated capacity of 800mAh. Designed in AA (14500) format, this lithium‑ion battery is intended as a replacement cell for Oral‑B iO series electric toothbrushes and other small devices that accept 14500/AA Li‑ION cells. The cell offers stable output suitable for daily personal care devices and small electronics where a higher voltage than standard NiMH AA cells is required.

Advantages

This 14500 battery combines the energy density of lithium‑ion chemistry with the compact AA form factor, delivering longer runtime compared with many single‑use alternatives. Its 3.6V nominal voltage provides consistent power for devices designed for Li‑ION AA cells. The rechargeable design reduces the need for frequent single‑use replacements and is suitable for repeated charge–discharge cycles when used with a compatible charger and device.

Suitable for

• Oral‑B iO series electric toothbrushes that accept 14500/AA Li‑ION cells
• Personal care devices and other small electronics requiring a 3.6V AA‑format Li‑ION cell
• Applications where a compact, rechargeable high‑energy cell is needed

Key specifications

• Cell type: Rechargeable lithium‑ion (Li‑ION)
• Format: 14500 (AA form factor)
• Nominal voltage: 3.6 V
• Rated capacity: 800 mAh
• Typical application: Small electronic devices and electric toothbrushes accepting 14500 Li‑ION cells

How to use

Install the battery into the device following the device manufacturer’s polarity markings and instructions. Only use this rechargeable Li‑ION cell in devices explicitly specified to accept 14500/AA Li‑ION batteries. Charge the cell with a charger compatible with 3.6V Li‑ION cells and follow the charger manufacturer’s guidance for charging currents and times. Do not attempt to force the cell into housings designed for different chemistries or dimensions.

Usage recommendations

Use a dedicated Li‑ION charger designed for 14500 cells, observe proper charging and storage temperatures, avoid deep discharge below the device’s recommended cutoff, and replace the battery if you notice swelling, leakage, excessive heat, or performance degradation.