XTAR PARD 21700 is a rechargeable 21700-format Li‑ion cell designed for devices that require a high-capacity, high-drain battery. The cell is compatible with flashlights, portable electronics and other equipment that accept 21700 lithium-ion cells. It is intended for use as a replacement or spare cell and should be charged and stored according to the manufacturer’s safety guidelines.
Advantages
The XTAR PARD 21700 offers a balance of capacity and discharge capability suitable for sustained high-current draw. As a 21700 cell it typically provides higher energy density than smaller formats, allowing longer runtime for compatible devices. The cell is rechargeable, making it a reusable power source that reduces the frequency of replacements compared with primary batteries.
Suitable for
- High-performance LED flashlights and torches that accept 21700 cells
- Portable power tools and battery packs designed for cylindrical Li‑ion cells
- Vape devices and e‑cigarettes compatible with 21700 size
- Portable electronics, hobby devices and DIY battery assemblies using 21700 cells
When it may not be suitable
This cell may not be suitable for devices that require a protected cell (with built-in circuit protection) if the original device specification demands it. It is also not appropriate for equipment explicitly designed for other battery formats (for example 18650, 20700 or 26650) without an adapter or dedicated holder. Use with devices that have built-in charging circuits requires ensuring compatibility with cell chemistry and voltage.
Key specifications
- Form factor: 21700 cylindrical Li‑ion cell
- Chemistry: lithium‑ion (rechargeable)
- Typical use: high-capacity, high-drain applications
- Rechargeable: yes
- Compatible device types: flashlights, portable electronics, power tools, vape devices (if designed for 21700)
How to use
Install the XTAR PARD 21700 into devices that accept 21700 cells, observing correct polarity and secure seating in the battery compartment or holder. Charge the cell only with a charger designed for lithium‑ion cells and appropriate for the 21700 format. Follow the charger manufacturer’s instructions and do not exceed recommended charging currents. Store the cell in a cool, dry place and avoid exposure to direct heat, moisture or mechanical damage. Dispose of or recycle the cell according to local regulations when it reaches end of life.
What to consider before purchase
- Verify that your device accepts the 21700 format and that the cell dimensions are compatible.
- Confirm whether your device requires a protected cell or if an unprotected cell is acceptable.
- Ensure you have a compatible lithium‑ion charger rated for 21700 cells and the recommended charging current.
Usage recommendations
Use a dedicated Li‑ion charger and avoid charging unattended. Rotate and inspect cells regularly for signs of damage or swelling, and do not use damaged cells. For high-drain applications, follow device manufacturer guidance on maximum continuous discharge current to ensure safe, reliable operation.
