Okay, so for the little chuck, this one, same one jambandphan ordered is good?
AW IMR16340 550 mAh IMR CR123 size LiMN Rechargeable Lithium Battery
What size battery spacer? is it a 15mm one?
Thanks for all the help.
As far as overdraining...that means don't use them till they are dead? Check them daily and recharge when they get low? The one I chose is the safest route to go, correct?
yeah the 15mm spacers...2 of them since it's a 2 channel charger and you're going to charge 2 batteries at once..
and yes..that high drain battery is the only one I'd use...
Safest...yeah...but I'm combining safe and most efficient/performing/over engineered..
while there are plenty of safe options there are significantly fewer that actually meet the demands of what we're putting them through and throwing at them...those are the ones I've focused on..
The 16340 does not need a battery spacer. I use 16340's and 18350's in my Little Chuck. I prefer the UltraFire 18350 from Madvapes at 3.7 volts and 1200 Mah.
My UltraFire 16340's are 3.6 volts and 880 Mah.
While these work I'm gonna use you as a prime example..please there's no offense intended in it...
these work for you..but lets examine them..
the 18350 has a max drain rate of 1.8A (1200 (mAh rating) * 1.5 (c rating) / 1000)
the 16340 has a max drain rating of 1.32A
now absolute worst case senario we're going to throw at that is a 1.5Ω 510 atty at full battery charge so thats a 2.8A amp draw..
we're over the max drain rate of the batteries...stressing them, reducing their useable duty cycle life, running the risk of tripping their protection circuit (if they have one) (remember all battery protection is not created equal)
Do they work?...yeah
Are they safe?....sure, reasonably so
Are they the safest and most efficiently performing?...not so much
mAh just gives you an idea of how long the battery will last between charges. If you find a protected battery in the right size with a mAh of 10,000 - grab it (but it doesn't exist.)
But... UltraFire apparently has a reputation for being overly "optimistic" in the mAh ratings they give their batteries (some of the battery stores even say that.) AW, from what people have said here, is fairly accurate.
I've been using the "AW IMR16340 3.7V 550mAh" from Lighthouse on my Screwdriver and I find they last about half a day each. There are others that would last longer but, for me, that's not a bad trade-off for having the safest chemistry.
I also have "UltraFire 18350 1200mAh 3.7V" protected batteries from Mad Vapes awaiting the arrival of my Little Chuck but they don't fit in a Screwdriver so I can't compare them.
True..but like I just mentioned the mAh rating can also be used to find out what the max drain rate of the battery is when we know what their c rating is as well...which is way useful in figuring if we're overstressing the battery and by how much depending on what atty configuration we're using...
by that if we really stretched our math we could figure out exactly how long our batteries would last if they were run continuous...and stretch it even further in dividing that into how many x amount of X second button presses we could get out of them...
take for example that LiMN battery:
i know it's capable of 550mA in an hour but because it has an 8C rating I could also get
1100mA for 30 min, 1650mA for 20 min, 2200mA for 15 min, 2750mA for 12 min, 3300mA for 10min...all the way out to 4400mA for 6min...(without damage to the battery)
now let's say I'm using a 1.5Ω atty ..thats between 2800mA (at full charge) and 2470mA (at 3.7V)
so if we held the button down continuous it'd last for somewhere around 12min.... if we were machines and said we always take 3 second button presses that's about 240 button presses...now it comes down to how offten you press the button and how quickly you go through those roughly 240 presses...
So the mAh rating can be really, really useful...just that we usually don't look at the all around big picture of how it all relates to each other...because well we're not coming at it as mathmaticians we're coming at it as ex smokers who just want our fix...lol