Of all the things that I expected to happen when I got into flashlights, battery hype was not one of them. If you are new to the flashlight world, or torches for those who are, you would not get far unless you had a good battery. 18650 batteries are the common use batteries for powerful flashlights. These batteries have enough power to handle the lumens. So you would think, a 18650 battery, is a 18650 battery. But you would be wrong. Amps play a big part in this world of battery power. Depending on the light, you could end up with a underperformed light lumens if the light requires more amps than your chosen 18650 battery brand can produce.
Just because it is a 18650 battery, doesn’t mean it’s ideal for the light you have. And just because it has high mAH’s doesn’t mean it’s more powerful output that a lower mAH’s. But it does mean longer output of juice. So there is a trade off in whatever choice you make. The biggest talked about battery is from Sony. The vtc5 is one of the most talked about 18650 because it has 30Amps. And 30amps should be enough to make any difference the light you have stand out above all other battery loads. So where do you get these wonderful batteries? More the likely you would need to go to Amazon but be mindful on the tons and tons of fakes out there.