Product details
21700A Lithium-Ion Rechargeable Battery – 4.2V 5000mAh High Capacity (Made in Japan) — Reliable power cells for everyday devices and backup systems.
Key numbers at a glance: battery 5000mah. Full details are in the specification table below.
Key Features
- Massive 5000mAh Capacity: Enjoy significantly longer runtimes compared to standard rechargeable batteries.
- Stable 4.2V Output: Optimized for high-drain devices that require steady voltage under heavy load.
- High-Density Energy: The 21700 form factor provides the best balance of size and power for modern EV and DIY projects.
- Rechargeable & Eco-Friendly: Designed for hundreds of charge cycles, reducing waste and saving you money over time.
- Safety Printed Warnings: Includes clear handling instructions directly on the wrap to ensure user safety.
- Flat Top Design: Ensures a secure fit in high-end battery sleds and custom-welded packs.
Specifications
| Model | 21700A |
| Chemistry | Lithium-Ion (Li-ion) |
| Capacity | 5000mAh |
| Rated Voltage | 4.2V (Fully Charged) / 3.7V (Nominal) |
| Shape | Cylindrical |
| SIZE | 21mm (Diameter) x 70mm (Length) |
| Protection | Unprotected (Requires a Battery Management System for packs) |
| Application | Flashlights, EV Battery Packs, Power Banks, Power Tools |
| DIY Techies | Building e-bike batteries or portable power stations. |
| Flashlight Enthusiasts | Powering 2000+ lumen searchlights. |
| Vapers | For devices requiring high-capacity 21700 support. |
| Professional Contractors | Keeping high-drain cordless tools running all day. |
Warranty: 7 days warranty. Delivery: Every unit is checked before dispatch, and cash on delivery is available across Bangladesh.