21700 Battery Australia
The 21700 cell is a larger, higher-capacity successor to the 18650, measuring about 21mm by 70mm. The extra size delivers more capacity and higher current, making 21700 cells popular in modern torches, e-bikes, e-scooters and high-drain devices.
LANplus Australia supplies 21700 cells for retail and wholesale buyers, with local pickup in Heidelberg West and shipping Australia-wide.
Voltage & Capacity
- Voltage:
- Nominal 3.6V–3.7V (4.2V fully charged)
- Capacity:
- Typically 3000mAh–5000mAh
- Chemistry:
- Lithium-ion (Li-ion)
- Rechargeable:
- Yes — rechargeable with a compatible Li-ion charger.
Common Uses
- High-output and tactical torches
- E-bike and e-scooter battery packs
- High-drain mods and devices
- DIY and replacement battery packs
Retail Quantities
Buy from 1 to 20 units. Available: 1, 2, 4, 5, 10, 20.
Wholesale Quantities
Bulk pricing for 50 and 100 unit orders.
Safety
Lithium cells must be handled with care. Never short-circuit, crush, over-discharge or expose cells to heat. Use a quality charger designed for the chemistry, store cells in a cool dry place, and keep them away from children. Damaged or swollen cells should be retired safely.
21700 Battery Products
Related
Frequently Asked Questions
Is a 21700 better than an 18650?
A 21700 generally offers more capacity and can deliver higher current because it is physically larger. Choose based on what your device accepts — they are not interchangeable in size.
Will a 21700 fit my 18650 device?
No. A 21700 is larger in both diameter and length, so it will not fit an 18650 holder. Check your device's specified cell size.