SAMSUNG INR18650-25R 2500mAh High-drain Battery , geniune SAMSUNG product.
Long storage life, light weight and high energy density! Good choice for your vaping mods that working with 18650 batteries!This is arguably the most widely sold and respected 18650 form factor size cell on the market, still today. This cell is of very high quality and has a very economical price point to book-end it. This is an excellent balanced cell in terms of performance and reliability. Also this cell has a very good equilibrium with a moderate-high capacity of 2,500 mAh in energy, while having a high maximum continuous discharge/drain rating of 20 amps (Without any temperature cut involved). This cell is very stable, even when it's pushed to its max rating. This cell has about everything you could desire in a Li-Ion cell, as you can see from some of its attributes. It has many uses such as: power packs, high-output power banks, BMS's, power tools, and high powered flashlights as well. This cell has a much safer battery chemistry makeup than cells from the past, which make it more stable and much safer. This cell is often classified as a "Goldilocks" cell, because of its versatility and all of its attributes. This cell has passed the test of time and checks almost every box that you can reasonably image. There is no wonder why it has such a venerable history and a consumer favorite.

Specifications:
Nominal capacity: 3000mAh
Max Continuous Rated Discharge: 15 amps (at 25 degrees C)
Nominal voltage: 3.7V
Discharge Current: 30A
Cycle info: Capacity drops to 60% after 250 full charge/discharge Cycles
Don't discharge below: 2.5V
Standard Charge: CC/CV @ 1 amp / 4.20 volts +/- .05v, 100 mA cut-off
(Max) Rapid Charge: CC/CV @ 4amps / 4.20 volts +/- .05v, 100 mA cut-off
Impedance: 22.15 +/- 2 milliohms

Note:
1. Do not over-discharge/overcharge
2. Recharge empty batteries as soon as possible
3. Do not short circuit
4. Do not dispose of in fire
5. Use it on your own risk

Brand: Samsung
Size: Height 64.8mm, Diameter 18mm
Manufacturer Samsung SDI
Model 25R
Size 18650
Positive Terminal
Flat Top
Nominal Capacity 2500mAh
Continuous Discharge Rating (max) 20A
Nominal Voltage 3.6V
Maximum Voltage 4.2V
Discharge cut-off Voltage 2.5V
Protected No
Rechargeable Yes
Approx. Dimensions 18.33mm x 64.85mm
Approx. Weight 43.8g