Well, G - I am not going that route myself. Happy with my setup
Interesting discussion.
By the numbers two 1600 mAh batteries have more stored energy than one 2900 mAh one (3200 being more than 2900), we just can't use as much of it?
Perhaps a missing factor is that traditional VV heads can compensate for the battery charge decay by simply drawing more current to get the base voltage (typically 6 Volts?) back up to spec. The output of the supply remains constant. Where 'bare bones' supplies like Persei, TV and the like suffer decreased performance and call for recharges while significant energy still remains in the battery? I routinely pull such batteries around 3.6 Volts (with roughly half the total charge still there but unavailable at high enough levels), while the converters soldier happily along....
Iris, not having an up converter, likely will have similar issues here? Once the voltage falls too far, performance will drop even though there's otherwise useful charge left.
OF
Yes I agree with the constant voltage advantage if the losses are not to much doing it. Once the voltage goes low enough the cart just doesn't preform even though power is there... reference @
Haywood post on battery trade-offs. One great thing about the external lab supply at home.
Which 2 1600mAh batteries are you discussing - not sure I follow or understand. Two 18650's in series?
The thing i have thought about is to run 7.4V in a standard tube requires 2 18350's each 700mAh. I was trying to convince myself they add, but I can't convince myself. Since you are running 7.4 you are drawing the same current out of each... Maybe I am over medicated and I'm over thinking this...
@
Caligula - one method - get a pollen press or a short brass tube (like you get at home depot for gas line) & some metal rod that just fits in the tube. Pollen press is easier and a cheap one is fine.
Load it up with hash, any type, kief and wax if you want. I use reclaim from my grain alcohol cleaning that's been purged. I also use new wax to. I layer kief , hash and the wax. I use like 4-5 grams of hash/kief. Throw the press together. Now heat it with a torch and press some more. Cool and remove.
Just cut of a piece with a knife, maybe break it up a bit and throw it in the SR-71 without the coil at all...
You can thank @
ataxian - he gave me the idea... The best sleeping pill made IMHO