I should have been clearer with my question to sando7. I was only able to Locate 1 Source for 26500 IMR batteries== The vender I purchased the Mod from Mr ELiquid they recommend the battery they sell the Efest 26500 IMR 3000mAh Battery which is red. Sando7 referred me to another sorce RTD who sell a Efest IMR 26500 3000mAh which is blue. As I Only use IMR batteries[MNKE -Sony-purple Efest] in my 4 Devices- 1 18650 VV- 1 Seigeli 20watt With 26650 tube-1 AR Mod 18650 and a Kamry100 telescopic. I was just wondering if anyone knew of any difference quality wise between the 2 Efest IMR 26500 3000mA,the blue 1 and the red 1. I could not find the amp limits listed for those batteries although I assume they are only 10 amp constant limit. Knowing of no difference I will order the red Efest IMR 26500 3000mAh recommended by the manufacturer of the Beast Box[ Mr ELiquid,] I thank you for your post. I am a strong believer of taking battery safety seriously for use in Electronic Cigarette Mods. Opps forgot to mention my latest Mod Fat Snow Wolf Black Rose Edition. If anyone knows of a source for a quality 26500 IMR battery with a 20 amp limit[constant] I would appreciate that information.