Stacking batteries and differing voltages advice

[davemorton]

I have just ordered the Argento to keep the spending fix at bay until my zmax turns up, and after reading it's description it says 'can run at 3.7v using a 18650 or 6v using two 16340's'. So what does that mean, which voltage is best for vaping, and what difference does it make?
Also, there is advice about not stacking batteries, is this a safety issue, or something else?
Many thanks.

[Deleted]

most single batteries are rated at 4.2 but perform at 3.7 when under load. When you stick 2 together (stacking) you get 6v which normally you would need a VV device to deliver.

The difference varies based on which atomiser you put on the end of each configuration. low resistance atomisers at 6v would pop. Mixing voltage and atomiser resistance allows the user to find the most pleasant balance of throat hit and taste since juice reacts differently at different heat.

When stacking you need to ensure you have protected batteries (which you should generally always use) and ensure that the mod has sufficient venting. If 2 batteries are used which are at different charge levels, 1 could drop quicker than the other damaging the battery and I think it can reverse charge and cause a short. Also If the ampage draw is higher than the batteries are rated for you could get a nasty reaction.

You need to manage your batteries, marking them and charging them equally. Testing them with a multimeter to see how they are ageing is also a good idea.

I would stick with 3.7 and lower the resistance on your atomiser and wait for the zmax ... I'm too busy for battery management other than just charging them and testing periodically.

[davemorton]

Thanks Ash for a very comprehensive answer. Much appreciated.