Samsung 25R 18650 2500mAh 8A Button Top Battery – High-Capacity Lithium-Ion Power Cell
Overview
Overview
The Samsung 25R 18650 Button Top Battery is a high-quality, rechargeable lithium-ion power cell designed for demanding applications. With a robust 2500mAh capacity and a high 20A continuous discharge rate, this battery is perfect for power-hungry devices, ensuring long-lasting performance and reliability.
Key Features
✅ High Capacity: 2500mAh ensures extended runtime before needing a recharge.
✅ Moderate Discharge Rate: 8A continuous discharge, ideal for low-to-medium-drain applications.
✅ Lithium-Ion Chemistry: Provides stable, efficient, and reliable power delivery.
✅ Rechargeable & Durable: Supports hundreds of charge cycles with minimal capacity loss.
✅ Button Top Design: Ensures compatibility with flashlights and devices requiring raised terminals.
Specifications
| Specification |
Details |
| Brand |
Samsung |
| Model |
25R (Button Top) |
| Battery Type |
18650 |
| Capacity |
2500mAh |
| Nominal Voltage |
3.7V |
| Full Charge Voltage |
4.2V |
| Discharge Cutoff Voltage |
2.5V |
| Continuous Discharge Rate (CDR) |
8A |
| Rechargeable |
Yes |
| Protected |
No (Unprotected cell – use with proper safety measures) |
| Cycle Life |
~300+ charge cycles |
| Button Top |
Yes |
| Diameter |
18.6mm (including button top) |
| Length |
~69mm (including button top) |
| Weight |
~48g |
Applications
The Samsung 25R is widely used in various high-drain devices, including:
🔋 Flashlights – Reliable for high-powered LED torches.
🔋 Power Tools – Works in cordless drills, saws, and other tools requiring high discharge rates.
🔋 RC Vehicles & Drones – Provides stable and long-lasting power.
🔋 Battery Packs – Used in custom battery packs for various applications.
Note: Label appearance may vary between batches.
About Samsung Cell Labelling
Samsung updated the sleeve printing format for their 18650 cells in 2024 due to regulatory and certification changes. New batches will no longer display “Samsung” on the wrap, and instead show “SDI” along with updated compliance markings (such as CCC).
Older stock (pre-2024) typically features “Samsung SDI” clearly printed on the sleeve, along with the model and batch details in the previous format. This is the version most customers are familiar with.
Performance & Authenticity Verified
These changes are purely cosmetic and do not affect performance, quality, or authenticity. All cells supplied are genuine Samsung-manufactured products and have been independently tested to meet Samsung’s specifications, including internal resistance, capacity, and discharge performance.
Safety Guidelines & Warnings
⚠️ IMPORTANT SAFETY NOTICE ⚠️
Lithium-ion batteries require proper knowledge and handling to ensure safe use.
Failure to follow safety precautions may result in fire, explosion, serious injury, property damage, or even death.
General Safety Guidelines
✔ Only purchase and use if you fully understand lithium-ion battery safety.
✔ Always charge in or on a fire-resistant surface and never leave batteries charging unattended.
✔ Use only a compatible smart charger designed specifically for this type of battery.
✔ Store batteries properly in a protective case—never carry loose batteries in your pocket, purse, or bag.
✔ Keep away from metal objects such as keys, coins, or tools to prevent short-circuiting.
✔ Use only within manufacturer-listed specifications and in appropriate, protected battery packs.
✔ If reselling, you must provide all safety warnings to customers.
🚫 Prohibited Uses & Handling
⛔ DO NOT use this battery in e-cigarettes, vaporizers, or similar devices.
⛔ DO NOT mix old and new, used and unused batteries.
⛔ DO NOT short circuit, puncture, cut, crush, incinerate, or modify the battery in any way.
⛔ DO NOT use if the battery is damaged, has a torn wrapper, or shows signs of wear.
⛔ DO NOT overcharge or over-discharge—this can lead to battery failure.
⛔ DO NOT expose the battery to liquids, extreme heat, or direct sunlight.
⛔ DO NOT attempt to solder directly—only use spot welding for battery pack assembly.
⚠ User Responsibility & Risk Acknowledgment
-
The user assumes full responsibility for proper handling, charging, and storage of this battery.
- Misuse or mishandling may result in serious injury or damage.
- No guarantee of compatibility with any specific device is provided.
- Using this battery is at your own risk.
By purchasing and using the Samsung 25R 18650 Battery, you acknowledge and agree to follow these safety precautions.
Failure to comply may result in hazardous consequences. Prior knowledge of lithium-ion battery safety is required before purchase.
Stay safe and handle responsibly. 🔋
