The Samsung 25R could be classified as "tried and true" it's been a favorite among many customers for a long time.  With 2500mah and a 20Amp Max Draw you can't go wrong with the 25R. 
Our batteries have been tested by Mooch  https://www.facebook.com/batterymooch/  himself, and have been verified as authentic and high performing cells.  We will be testing each bach to ensure ongoing authenticity. 
Authenticity is 100% guranteed or your money back. 

Brand: Samsung
Model: 25R
Dimensions: 18.33mm x 64.85mm
Weight: 44.3g
Size: 18650
Chemistry: INR
Nominal Capacity: 2500mAh
Nominal Voltage: 3.6V
Discharge: 20A Max Continuous
Positive: Flat
Protected: No
Rechargeable: Yes
Standard Charging Current: 1A
Max Charging Current: 4A
Charging Voltage: 4.20+-0.05V

Due to the nature of these cells, we do not accept returns unless found unfuctional on arrival.  You have 3 business days to contact us once the product has arrived and found them unsatisfactory.