Definitive Prodigy Battery Compatibility Thread

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Walrus

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I'm getting about what I would get on a single CR123 3.7v in a SD... 3-4 hours (heavy vaper, here). Never had charging problems, my charger has a protection circuit in it. I've left it unattended many times, and don't rush to pull them out when it turns green. No special precautions.... charger is on my desk. Ok... so I don't leave it near the drapes. And I don't leave them in much longer than a day or so :)

This is the charger I use for them:

Ultrafire 3.6 volt or 3 volt RCR123 Lithium Battery Charger

I am going to append this comment to add that today, on only moderate use, they lasted 7.5 hours. This was 7.5 hours of constant moderate use... no down time. I guess I vape a bit less when I'm not sitting at the computer.
 

ruuku

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The Tenergy RCR's are LiFePO4, not regular LiIon, thus they have a higher number of cycle life than that of LiIon.

Taken off of Tenergy's Website:
New Chemical LiFePO4 Li-Ion battery

* Rechargeable LiFePO4 RCR123A 3.0V 750mAhBattery
* Life cycle: 2000 times (Traditional Li-ion: 500 times)
* Never explode or catch fire
* 100% Compatible with Disposable CR123A batteries
* Working Voltage:3.2V and Peak Voltage: 3.6V
* Charging cut-off voltage: 3.6V
* Discharge cut-off voltage: 2.2V
o Please never overdischarge battery below 2.2V/cell
o Charge the this battery with LiFePO4 RCR123A smart charger.
* Capacity: 750 mAh
* Maximum discharging rate:< 550 mA
* Maximum charge current: <550 mA
* Cell's dimension: 17mm Dia. x 34.5mm H.
* Weight: 0.6 oz (18 grams).
 

Kit

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Hmm... strange lemme check mine...hmmm... batts came in bubble wrap along w/ the charger, but nothing regarding the life cycle is written on the battery itself. Did yours come w/ any retail packaging?

YES ruuku,its not on the battery, its says 1000 cycles on the yellow packaging the batterys and charger come in .
 
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Kit

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Just curious here... but does it really matter if it is 1,000 or 2,000 cycles? The kit comes with 4 batteries, 2 set of 2. Hypothetically let’s say you use both sets each day... 1000 cycles will last you over 2.5 years. So at the point, you spend $16 and buy 4 more. :)

Am I simplifying this too much? :)

Thats not the point caymen, we are just trying to find out the real performance spec of this battery.
 

Cayman

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Thats not the point caymen, we are just trying to find out the real performance spec of this battery.

I know... I was being funny! :D I figured if they lasted over 2.5 years and only cost $16, I would be pretty darn happy with that. Heck, my daughters toys go through $16 a month in regular batteries! LOL :)
 

tvujec

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Thats not the point caymen, we are just trying to find out the real performance spec of this battery.
Life cycle is an estimated value and not a property of a LiIon battery. It made sense with older (e.g. NiCd) technologies when the retailers picked it up as one of the spec fields, but with LiIon, it lost its relevance.
Life of LiIon batteries depends on time, environmental temperature and charge level. Typical fully charged battery will forever lose 20% of its capacity if stored at room temperature in one year. Reduce the charge level to only 40%, and the loss is only 4%. Put it in the freezer and it'll drop below 2%.
Let's say for the sake of example that you have a battery that lasts 4 hours of usage and requires 2 hours charge.
A) If you use it only once a day, that means that the battery spends 6 hours being used / charged and 18 hours being stored. If it is stored at full capacity (overwhelming majority of users recharge batteries after, rather than before usage), it will lose 20% of capacity in one year or 365 charge cycles.
B) If you use the same battery 4 times a day, without any storage time, permanent capacity loss will most likely be similar to the above 20% case, yet you will accomplish 1460 charge cycles.

That should illustrate why counting cycles on LiIon batteries usually doesn't make any sense. However retailers seem to insist on that piece of data, out of pure inertia in my opinion.
 

Kit

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Life cycle is an estimated value and not a property of a LiIon battery. It made sense with older (e.g. NiCd) technologies when the retailers picked it up as one of the spec fields, but with LiIon, it lost its relevance.
Life of LiIon batteries depends on time, environmental temperature and charge level. Typical fully charged battery will forever lose 20% of its capacity if stored at room temperature in one year. Reduce the charge level to only 40%, and the loss is only 4%. Put it in the freezer and it'll drop below 2%.
Let's say for the sake of example that you have a battery that lasts 4 hours of usage and requires 2 hours charge.
A) If you use it only once a day, that means that the battery spends 6 hours being used / charged and 18 hours being stored. If it is stored at full capacity (overwhelming majority of users recharge batteries after, rather than before usage), it will lose 20% of capacity in one year or 365 charge cycles.
B) If you use the same battery 4 times a day, without any storage time, permanent capacity loss will most likely be similar to the above 20% case, yet you will accomplish 1460 charge cycles.

That should illustrate why counting cycles on LiIon batteries usually doesn't make any sense. However retailers seem to insist on that piece of data, out of pure inertia in my opinion.

thanks for that good info :)
 

gjrhine

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How about some of these for the Protégé?

sony-lithiumion-08-11-09.jpg


Sony's certainly had its share of battery problems but, like most battery-makers, it's also doing its part to try to improve things, and it's now announced a new lithium-ion battery that should not only be more stable, but last significantly longer than traditional batteries as well. That's apparently possible in part due to its use of an olivine-type lithium iron phosphate for the cathode material, which should help boost the battery's overall lifespan to four times that of conventional lithium ion batteries, not to mention provide an 80% capacity retention after 2,000 charge-discharge cycles and, perhaps most impressively, a promised 99% recharge in just 30 minutes. According to Sony, the batteries are especially well suited for use in power tools (where they'll first show up), but it does say they'll also eventually be "expanded to a wide range of other mobile electronic devices."
 

StratOvation

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How about some of these for the Protégé?

sony-lithiumion-08-11-09.jpg


Sony's certainly had its share of battery problems but, like most battery-makers, it's also doing its part to try to improve things, and it's now announced a new lithium-ion battery that should not only be more stable, but last significantly longer than traditional batteries as well. That's apparently possible in part due to its use of an olivine-type lithium iron phosphate for the cathode material, which should help boost the battery's overall lifespan to four times that of conventional lithium ion batteries, not to mention provide an 80% capacity retention after 2,000 charge-discharge cycles and, perhaps most impressively, a promised 99% recharge in just 30 minutes. According to Sony, the batteries are especially well suited for use in power tools (where they'll first show up), but it does say they'll also eventually be "expanded to a wide range of other mobile electronic devices."

Sweet! Now if they can come up with a 7V, 3000mah, 18650 we'll be cookin' !!!:D
 

skex

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Just thought I'd note here that I managed to pick up a pair of Ultralast CR123 rechargebles with a charger from Fry's here in Austin for $3.99 They innitially rang up about $25 but when I pointed to the pricetag on the box they corrected it. They're 3.0 volt and seem to work just fine.
I'm really liking this Prodigy. The build quality is nice and there is a nice lack of moving parts to worry about seems like the switch is pretty much the only thing that might actually be able to fail.
Being able to source batteries locally is a real bonus IMO means I don't get stuch unable to vape if I have a battery die anymore.
 
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