The Samsung 18650 25R 2500mAh 20A battery comes with 20 Amp maximum discharge and 35 Amp peak discharge. This battery is 100% authentic and genuine. Samsung has slightly redesigned the chemistry for the 25R to increase its overall life cycle. The change in the color of the wrapper from blue to green denotes the change in chemistry. ~~~WARNING~~~ ALWAYS PRACTICE BATTERY SAFETY Never use damaged batteries. Never leave charging batteries unattended. Never carry loose batteries in your pocket/purse/bag. Always use a battery case. Loose change, keys, or anything metal can complete the circuit and cause batteries to EXPLODE which may result in serious injury or death. By purchasing from The Vape Spot, LLC, customers agree that the use of Electronic Nicotine Delivery Systems (ENDS) devices, accessories, and components carries with it an inherent risk. Customers further agree to hold harmless and indemnify The Vape Spot, LLC from all liabilities, losses, claims, damages or injuries from the use or misuse of ENDS products. Reasons why a battery should be replaced include, but are not limited to: 1) the wrapping is torn. 2) the battery is dented. 3) the insulator is missing. 4) the battery is leaking. 5) the battery is older than 6 months. If you have any questions about battery safety, please ask a sales associate.