The Samsung 25R batteries are great for your general VV/VW Mods and outperform most 18650 batteries on the market.

Specifications:
Type: Li-Mn IMR
Capacity: 2500mAh
Max continuous discharge: 20A
Nominal operating voltage: 3.7V
Full charge voltage: 4.20V±0.05V
Battery should not be discharged below 3.3V
Protection: Unprotected IMR Cell
 
Safety, storage and disposal
Lithium ion (Li-Ion) Cells can be dangerous if used improperly. By buying Li-ion batteries from us, the buyer assumes all associated risks.
	
Always use a battery charger that is rated for Li-ion cells
	
Batteries should never be left charging unattended
	
Batteries should never be loose in pocket or bag
	
All lithium batteries have a cycle-life, however a battery should be replaced every 2 years - whichever comes first.
	
Never continue to use a battery with a broken PVC wrap.
	
Never completely discharge batteries
	
Do not expose to extreme heat