The mega 510's are 280mah. the short ones are 180mah.
And I strongly recommend manual
batteries. Manual slim 510 is totally sealed metal on the threaded end - no chance of killing it with
juice leaks, won't turn on accidentally from wind or vibration, and manuals make it easier to get a good hit.
And BTW slim 510's do NOT use
- LR atomizers or cartomizers (can damage slim batteries)
- Riva charging cable (too many mA output, will ruin slim batteries)
Slim 510 DOES use
- standard resistance atomizers and cartomizers (like 2.5 to 3 ohm single coil)
- its own charging cable which should only output 150-250mA (not the 420mA the Riva cable puts out)
I label both sides of the flat screw-in part of my Riva cables with a big R so I don't accidentally charge the slim 510 in the Riva cable.