Here is the cheapest I have found this multimeter. I use this one all the time.
Hongda DT-95B multimeter voltage meter
Hongda DT-95B multimeter voltage meter
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Ok... First real rule... alway assume what you have seen or read on the internet to at best be hearsay
And this is what I heard ( ie more hearsay )
Certain types of rechargeable batteries have a stabilizing compound put in them at the factory to help their life expectancy not deteriorate while they sit on a warehouse or store shelf. This compound is broken down during the first few recharge/discharge cycles which then allows a full charge of the battery.
I have also heard, in the same thread that I read the previous...
Not all batteries have the stabilizer put into them, it is a choice made by the factory producing them and is probably dependant on how quickly the battery actually sells out.
Both of those posts were not made by or originally came from any actual battery manufacturer... in fact, when asked, the manufacturers have been quite about it and didn't provide any answers. While the idea of a "stabilizer" makes sense... we really have no concrete proof that this is real or not... just like everything else you read on the interwebs... or hear from a politician, lawyer, publicist... and anyone else we may wish to make some fun of...
Randy
this makes a lot fo sense. i often wondered how rechargable batteries survived on the shelf. and also regular batteries, for that matter.
i guess thats why you find unopened packages of batteries for sale cheap at stores like Job Lot and Big Lots. they must be old batteries that are no longer worth full price.
i guess thats why you find unopened packages of batteries for sale cheap at stores like Job Lot and Big Lots. they must be old batteries that are no longer worth full price.
ok. im revisiting my old thread with a new question:
what is an acceptable range of voltage a dead 3.7v 14500 batt? im getting slightly over 3 volts, like 3.1, 3.2.
i believe a fully charged 3.7v batt should come off the charger at no higher than 4.2v. im just wonderign what the acceptable voltage for a "dead" batt is. im afraid of deep discharge and want to test my batts to make sure they stay safe.
what is an acceptable range of voltage a dead 3.7v 14500 batt? im getting slightly over 3 volts, like 3.1, 3.2.
i believe a fully charged 3.7v batt should come off the charger at no higher than 4.2v. im just wonderign what the acceptable voltage for a "dead" batt is. im afraid of deep discharge and want to test my batts to make sure they stay safe.
When I've run my Li-ion batt's down to cutoff they'll read right around 3.2v. I don't usually let them get down that far though since I use an unregulated mod most of the time. When vapor production starts falling off I'll switch batt's, that's usually around 3.8 to 3.9v or so.
thanks for that. i think i'll start swapping out my batts when theyre close to 3.5 or so. i hear the batt life expectance goes up when you do shallower charges as opposed to full charges.
but just for the record....does anyone know at what point voltage becomes too low to be safe? is 3.0 dangerously low and bordering on deep discharge? basically my question is what voltage would be unacceptable for a dead batt?
but just for the record....does anyone know at what point voltage becomes too low to be safe? is 3.0 dangerously low and bordering on deep discharge? basically my question is what voltage would be unacceptable for a dead batt?
Protected batterys will cut off before it gets to low, I think somewhere in the low 3v rage. IMR has a low voltage rating of 2.5v which I never let them get that low, in a unregulated mod you'd notice a weak vape way before that. In a regulated mod you might have to keep an eye on it but most regulators are set to cut off well above that, never hurts to check though.
Also many chargers, I know mine does this. They won't charge a battery unless it's at a high enough voltage to safely start charging.
Also many chargers, I know mine does this. They won't charge a battery unless it's at a high enough voltage to safely start charging.
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awesome. i read on battery university that Li-Ion batts will be dangerously low at around 2.7v. my mod is regulated, so i dont notice any dropoff until the mod stops working, and the "dead" batts were about 3.1v. so it looks liek my mod cuts the voltage off there. im glad to know i havent been doing any harm, and likely wont.
I don't mean to threadjack or anything over here but I recommend against xFires ... AW IMR are safer, can handle twice the load (xfires are rated far lower) and they last longer both between charges and in terms of total lifespan
Super T Manufacturing, Innovative manufacturer of electronic cigarette products.
I know that the mah rating is lower- but since they're actually made to handle a high drain load- they actually do last longer on one charge
As an aside everything you use on IMRs will vape better and produce more vapor and everything else!!
Super T Manufacturing, Innovative manufacturer of electronic cigarette products.
I know that the mah rating is lower- but since they're actually made to handle a high drain load- they actually do last longer on one charge
As an aside everything you use on IMRs will vape better and produce more vapor and everything else!!
SOLD. really appreciate the advice. i had no idea that the batts mattered that much. i cant wait to place my order. how about Efest IMRs? WOuld those be the same as AWs or no?
Efest IMR14500 700mAh 3.7V Rechargeable LiMn battery (2 pack)
Efest IMR14500 700mAh 3.7V Rechargeable LiMn battery (2 pack)
Why not just go for the AW IMRs? The majority of users use that and are VERY happy with them.
You can get them for $6.50 a pop from WonderLite here: http://www.e-cigarette-forum.com/fo...ers-exporters-america-shipping-worldwide.html
You can get them for $6.50 a pop from WonderLite here: http://www.e-cigarette-forum.com/fo...ers-exporters-america-shipping-worldwide.html
No problem, man... I just wish someone would have told me about them sooner!!
http://www.e-cigarette-forum.com/forum/reos-mods/198031-another-battery-question.html
If I'm doing the math right, 14500 Xfire 900mah are only rated for 1.35A while the 14500 AW IMR 550mah is rated at 4.4A... it's no damned wonder that the IMRs hit so much harder and don't have to be charged as often (Plus I've heard that the Xfires being overstressed can cause them to get real upset and a bit unsafe)
welp, looks like i need a new mod if im going to want to use better batteries. i ordered the AW IMRs but i found out i wont even be able to use them in my smoktek varicool. for some reason the mfgr told me that they wont work so its not even worth trying. i should have asked before i bought them but i just thought that a 14500 was a 14500. nope, i was wrong. what type of mods do folks use AW IMR 14500s in? maybe some types of box mods use them?
Not sure why they told you they wouldn't work.... Sounds very odd in fact!! I have the 3.7V box from SmokTek and the AW IMR's work great in it. Haven't had a problem with them at all.... The only difference in the size of the case is mine is a AA sized box and the evercool is a AAA box. They are the same height..... What was the exact reason they gave you for it? Sounds to me they just want to sell you their subpar battery for the unit and is just telling you a story..... I'm sure someone will chime in here that has the unit and let you know from experience....
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i apologize. i was paraphrasing. the info from the mfgr is just a note on the inside of the battery cover, stating to use only *protected* batteries. the advice about not even trying them was from a friend. i decided not to use them out of fear for safety, but also due to the fact that if i had placed them in my box (or a charger), it would have voided the return policy. i was all ready to pop them in- i even had them out of the plastic baggie they came in, but upon further review, i decided to return the batts instead. for all i know, they would have worked fine. maybe not. who knows.
Paraphrased from ECF's battery warning thread: http://www.e-cigarette-forum.com/fo...9007-warning-rechargeable-batteries-apvs.html
Note 1
Li-Mn or Li-FePo4 rechargeables made by for example AW are a safer technology battery that can be used - they need no protection.
Current information is that AW IMR Li-Mn rechargeables are the safest batteries for use in APVs.
Ron -
Note 1
Li-Mn or Li-FePo4 rechargeables made by for example AW are a safer technology battery that can be used - they need no protection.
Current information is that AW IMR Li-Mn rechargeables are the safest batteries for use in APVs.
Ron -
Hey man, I completely understand how you feel. You have to do what you feel is right for you. I will add that a lot of devices were made and tested prior to the AW IMR being made. The difference in the protected battery and the AW IMR is the protected battery uses a protection circuit that shuts the battery down to possibly keep it from a catastrophic failure whereas the AW IMR is a safer chemistry battery to prevent that from happening. I will say that in the past several months, a lot of vendors that once recommended the protected batteries, (as you've stated), in their APV's, have changed their description to the AW IMR safer chemistry batteries as they have a pretty positive track record to date in the industry. Not to mention they are the best high drain battery on the market, but with the addition of the new Panasonics they are getting a run for their money. Though I have only seen the Panasonics in 18650 size so far. I heard they are going to be manufacturing in different sizes for the vaping community though. I also believe I read a few posts as to the amp limit being a lot higher on the AW IMR by almost double that if the ICR that you are using, which would make them safer as they don't get overpowered by a lot of the APV's in todays market. I think the max discharge rate for the protected is 5.2 amps and the safer chemistry is 10 amps. There are a few posts on the forum about this topic and there was a lot of good info about batteries with the unfortunate incidents in Florida and Colorado this past year. I do know that the Efest batteries are relatively new in the vaping industry and they are also "safer chemistry" the same as the AW IMR's. I have suspicions that they are actually made by AW and re-branded with the Efest label. They are certainly very similar in all aspects.... I could be wrong about the re-branding but it is certainly coincidental though.....
Very nice find Ron..... I was looking, but obviously not in the right place..... Thanks....
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