Wondering if anyone knows the life expectancy of these? I have mine for about 6 months and they seem to be fading, not holding the charge as long. I use them constantly, charging every day. Thanks for your help!
18350
- Thread starter Keesie
- Start date
- th_trl_thread_readers 0
-
- Tags
- madvapes totally wicked
- Status
Kinda sounds like it might be not much more than six months of constant use. That's not too shabby!
I've got five which I ordered for my Screwdriver (almost a year ago) ... they've only been lightly used, but are still going strong.
The Screwdriver only uses one ... I over ordered (5).
The Screwdriver only uses one ... I over ordered (5).
I believe mine came from Totally Wicked. That's where I bought my Screwdriver. I see MadVapes has them for $5.79. At least they're fairly cheap, huh?
Yeah, I'm using the MadVapes ones. I just drain them quickly. Could be that cheap charger I use too, I don't know. I thought I could vape all day on just one pair, but no. I will look at TW batteries. Thanks for telling me!
Typically speaking, a good quality LiCo cell can deliver ~500+ cycles at ~0.1-0.5C rates to an 80% depth of discharge before their total capacity drops to ~80% of initial capacity.
A 2x18350 powered ecig is likely operating at a drain rate well in excess of 1C. I am not aware of any 18350s that are made by highly reputable cell manufactures. All things considered, if you charged the cells twice daily 4-6 months would be about all I would expect before the capacity would drop below 80% of the initial capacity, at which point a LiCo cell would be suffering from increased resistance, which reduces operating voltage, which leads to the impression of even less capacity because vaping performance would drop off more dramatically.
Using a multi-meter to ensure that the charger you are using is charging in a safe manner (and not over-charging) could help reveal a source of lost cycle life. Generally speaking, charging to ~4.1V can increase cycle life 2-4X compared with charging to ~4.2V. Many chargers I have tested over the years charge to 4.25V or higher, especially if the cell is left on the charger after the "end of charge" indicator has tripped (usually a green light).
Which charger are you using?
It would be nice if someone could make a decent quality IMR cell in that size. It would deliver a longer service life in this type of application.
A 2x18350 powered ecig is likely operating at a drain rate well in excess of 1C. I am not aware of any 18350s that are made by highly reputable cell manufactures. All things considered, if you charged the cells twice daily 4-6 months would be about all I would expect before the capacity would drop below 80% of the initial capacity, at which point a LiCo cell would be suffering from increased resistance, which reduces operating voltage, which leads to the impression of even less capacity because vaping performance would drop off more dramatically.
Using a multi-meter to ensure that the charger you are using is charging in a safe manner (and not over-charging) could help reveal a source of lost cycle life. Generally speaking, charging to ~4.1V can increase cycle life 2-4X compared with charging to ~4.2V. Many chargers I have tested over the years charge to 4.25V or higher, especially if the cell is left on the charger after the "end of charge" indicator has tripped (usually a green light).
Which charger are you using?
It would be nice if someone could make a decent quality IMR cell in that size. It would deliver a longer service life in this type of application.
Last edited:
I noticed this site is selling IMR 18350's which might be worth considering - 18650 | 18500 | 18350 batteries - Avid Vaper
Wow, I didn't realize anyone made an IMR18350.. That would probably be the preferred cell to use in this application. (Don't worry about the lower mAH rating, the 1200mAH cells are heavily over-rated anyways.).
The problem I see, is that the picture seems to indicate that it is a flat top cell, which may or may not make electrical contact with the tail end of the next cell in series on it's own. A little contact bushing may be necessary.
Eric
The problem I see, is that the picture seems to indicate that it is a flat top cell, which may or may not make electrical contact with the tail end of the next cell in series on it's own. A little contact bushing may be necessary.
Eric
There are 2 styles in the 18350's flat and button top make sure you get the right ones. The button tops are a little longer about 1/4 inch
- Status
Similar threads
