Samsung 25R 18650 2500mAh 20A Battery

The main difference between the Samsung 30Q 18650 and the Samsung 25R 18650 comes down to a classic trade-off between capacity (runtime) and discharge rate (raw power.

While both share the exact same physical size (18mm diameter by 65mm length) and use highly stable INR chemistry, they serve different needs. 

Samsung 30Q (15A/20A): Safely handles up to ~45 Watts per battery.

If you vape at lower wattages (like 10W to 40W) using high-resistance coils for smooth, low-vapor hits

You do not need the high-amp output of the 25R. The 30Q’s 3000 mAh capacity will give you roughly 20% more battery life (more puffs per charge.)

Samsung 25R (20A): Safely handles up to ~60 Watts per battery

If you vape at high wattages (55W+ on a single battery, or 100W+ on a dual-battery mod) using low-resistance coils.

High wattages require high current. The 25R's true 20A limit prevents it from overheating. Pushing a 30Q past its comfort zone can cause "voltage sag" (where the mod drops power or says "low battery" prematurely) and can damage the cell.

Key Differences:

• Battery Life (Capacity): The Samsung 30Q holds 20% more total energy (3000 mAh vs 2500 mAh). If your device doesn't push massive power, the 30Q will let it run significantly longer on a single charge.
• Current Delivery (Amperage): The Samsung 25R is designed to handle higher continuous current safely (20A vs 15A). It experiences less "voltage sag" under heavy loads, making it more stable when hard-pressed.

The Samsung 25R is one of the best choices on the market for an 18650 battery, offering a 2500mAh capacity and a 20A continuous discharge rating (CDR).

Features:

• Style: Flat Top
  
• Protected: No
• Capacity: 2500mAh
• Continuous Discharge Rating: 20A
• Nominal Voltage: 3.6V
• Maximum Voltage: 4.20V
• End of Charge Voltage: 4.20V
• End of Discharge Voltage: 2.50V
• Internal resistance: Max 18mΩ （AC 1kHz) | Typical 13.20mΩ ±2 （AC 1kHz)
• Approximate Dimensions: 18.33mm x 64.85mm
• Approximate Weight: 43.8g

Package Includes:

• 1 Single Samsung 25R 18650 Battery

Lithium IMR batteries are extremely hazardous and liable to cause serious injuries to persons or property. The user accepts liability for the use of a Lithium IMR battery. As the manufacturer and the distributor cannot ensure the battery is used correctly (charging, discharging, storage, etc.), they cannot be held liable for damages caused to persons or property.

 Battery Chargers:

Nitecore I2

Nitecore I4

Golisi S4 Digital Charger

### Will fit all mods requiring an 18650 battery (flat top). ###

IMPORTANT:
Fully charge before first use.
Never short (connect positive and negative ends) battery.
Always keep them in a battery case or inside of your device
Never put this battery together with metal objects (short circuit can happen if you do).
Never carry bare cells in your pocket with keys, change or any other metal objects.

Make sure to properly prime each coils and pods before use.

Warning: If the coils has a sub-ohm resistance, please make sure you have a great understanding and technical knowledge on how to use mods and batteries that can handle Sub-Ohm coils. Do not use short or flat 510 connection on any hybrid or hybrid style device. If you are not familiar or unsure of particular products or set-ups, please do not use it. Always use proper precautions and handling.

Note: There is always an inherent risk when using any rechargeable batteries at anytime and under any circumstances. Coolvape are not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making.