You discharge the cells further than most drivers will allow a cell to discharge. For most intentions and purposes, the Panasonic NCR18650B is a 3100mAh cell. I bet the protection circuit kicks-in around 2.8v as well.
I do not often check the protection, but a charger with usb output i tested, did miss the low voltage disconnect and there it is very obvious that the protection is at 2.5 volt.
That's true as far as using a cell one time goes. Isn't it less stressful on a battery when it's not fully discharged? In that case, leaving 300 mAh in it should help it live longer.
3600mAh/3400mAh=1.0588, so that’s less than 6% difference.Good to see improvement,but until price drops to 8$/piece,good old ncrbs and lgs 3000 are good enough(for me).
Yup, I noticed this as well. The time with one added battery pack more than doubles run time. I still carry it with only one battery pack for the smaller size though.
This is preferable, but even with my relatively large set of batteries (~30 keeppower 3400mAh cells, ~30 other mixed protected batteries, ~10 high drain unprotected, ~10 random, 20 laptop pulls) setting 8 batteries to be used specifically together, and only with one light, is kind of a hassle.
Given the safer chemistry of the batteries, and the protection circuits, I don't feel I'm compromising safety too much, in simply making sure that cells go into the light within .05v of each other, and I also almost never run my flashlights down to even 3v.
I will keep that in mind[0.05V of each other]if I ever mix some. Mine are always between 3.5v and 3.6v when I recharge them.For all my torches.
After 62 minutes of turbo my Orbtronic are always between 3.54 and 3.56!! That is until the batteries get weaker. this is after 10 months of use!! Not too bad!
You have more batteries than me!! The eight for the Fenix TK-75 are stored in the plastic cases “Orbtronic” gave me so there is no chance of mixing them up!
I want to make this clear!! The Eight batteries[ in storage] that I bought are NCR Protected 3400 Mah,they were $10/each. The Orbtronic are in the TK-75 NOW and they are about $19 each!! I am not that crazy as to store $152 of batteries that have mostly sat around! $80 is bad enough!
I store them at 3.61v,the same voltage the manufacturer had them when I got them. I checked them the other day and they were at 3.59!! Not too bad , lost 0.02v in about 2.5 months!
Actually, I'll probably catch some flack for this, but I tend to store my batteries charged, more often than not, and at room temperature.
It's definitely counter to safe practices, but in the event I need a battery I want it to be as close to topped of as possible.
The .05V is just something I go by. If I put in 4 batteries, and of them one comes out with a difference of over .2 vs the others, it's also leaving the batch to be used in single cell lights only.
One other detail, is I don't use any cheap chargers anymore. I think it's very strange that there are people on here that spend $15+ on a single battery, but than will use a free, or super cheap charger with it.
So far I've yet to come across a situation where a crappy battery, crappy charger, or both were on involved in a incident.
Maybe someone more battery minded has come across issues with panasonic batteries?
I tend to store most of mine at about 3.8v (still a lot of juice) with only 1-2 cells stored at full charge. I live in a city and most of my lights are for fun. Rarely do I NEED a light and when I do, it is for short periods of time.
I’d be interested in the discharge curves. Maybe they can hold voltages better than the current 3400s and would be more ideal for XM-L2 with a linear driver.