The Ferrari of batteries
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from what I read, they are exactly the same, both are panasonic ncr18650 with protection circuits. not like I'm an expert or anything, just what I read.
I got my hands on a couple of Redilast batteries, and the only difference I noticed from AW was that the Redilast were 2mm longer. Other than that, they performed the same as the AW's. The thing that kills me with all of the battery suppliers is not having consistent size... If you order an 18650, it should be 65mm long damnit!
I only use the IMR's for my provari and to run dual coil cartos. The IMR's are more for low resistance applications. The max discharge rate of batteries are not the same. Dual coils pull over 2 amps which could damage batteries without the capacity to deliver. They do run more consistently but have generally lower mah ratings than the non IMR variants. This means shorter run time in normal e cig use. I would use a regular 18650 at 3000mah over a IMR 18650 at 1600 mah when using a 2.5 ohm carto for example. But in my provari a normal 18650 is drained more quickly and can have it's life shortened, when compared to an IMR with lower mah. So it really depends on your application weather or not IMR is what you need. AW makes both IMR and standard protected both of which are among the highest quality brands. Sorry if any of that was already posted.
I get mine from Super T manufacturing
I get mine from Super T manufacturing
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I'm with you on that. I don't know how or why they would allow that. I do know that the protection circuit adds 2mm. So IMR's since they don't require the circuit will be 2mm shorter (the right size). Some manufacturers take that into consideration and others don't.
yeah, one uses a paper separator for the top button(protection circuit), the other uses a plastic spacer.
The IMR Battery doesn't need a protection circuit because it's a totally different chemistry battery. The IMR will not explode like a protected circuit battery will when something bad happens because it has very little oxygen in it's chemistry The PC blows before the battery on a Protected Circuit (PC) Battery. I believe "protected batteries" are more dangerous then IMR's because, if the PC fails, the battery could explode. I've read pro's and con's of both types and there are other difference's also due to the chemestries. I believe the IMR has a higher discharge rate so it really puts the amps to lr attys. Personally, mah rating is overrated. I'd rather have the AW IMR 1600 mah because they have a higher discharge rate. jmho
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In the 18650 size (and only that size), the AW and Redilasts LiCo protected can handle 5 amps very well and will last alot longer than the IMRs. The Provari switch can only handle 2.5 amps, BUT if you factor in the current required to make a 3.7 v battery run at 6 volts, you can pull an effective 4.4 amp current from the battery (if you vape a 2.4 ohm atty at 6 volts for a 15 watt vape - hot vape indeed!)
Not sure if either would fit in the Provari but time will tell!
Lots of good data here 18650 battery test 2011
I know the AW and Redilast are same technology but for this tester at least, the Redilast seemed superior. Maybe because the battery is slightly larger.
Redilast is also coming out with a 3100! Tactical HID » Redilast - also at 68.5 mm
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I must be the only one! I find the AWIMR 18650 performs really badly compared to these cheap IMR BDL 1400mah which are a third of the price?
Weird I know, maybe they are copies......they look just like an AMR but who can tell?
Weird I know, maybe they are copies......they look just like an AMR but who can tell?
This thread has my head swimming.
I'm using a Boge 2.5 ohm cartomizer powered by an UltraFire BRC 18650 battery in my Reo Grande.
Can my Reo Grande turn into a grenade while I'm toking from it?
I'm using a Boge 2.5 ohm cartomizer powered by an UltraFire BRC 18650 battery in my Reo Grande.
Can my Reo Grande turn into a grenade while I'm toking from it?
Only if the protection fails
. There is a printed circuit board embedded in the battery that should defuse the grenade.
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It CAN, but it is unlikely, assuming you purchased the battery from a reliable source (there are counterfeits). First, it is a large (mAh) battery running a fairly high ohm atomizer. That is a very manageable load. Second, it IS protected, so if the protection circuit works, nothing will happen. Treat your batteries with respect and keep an eye on them with a multimeter, and you will be fine.
The only concern that I have with your set up is whether the battery is so large that it is over-compressing your spring. If so, you are bypassing a safety device built into the REO.
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Thanks for the advice, VapPornRules and mlinky. I got the 18650's from MadVapes to replace a pair of AW IMR 18650's which had become somewhat tired. Counting the positive connector, they're only about 2mm. taller than the red AW IMR 18650's and I can pop them out with my fingernail. There is some extra spring compression, though.
Also wanted to point out that because of the hole in the door, your mod is technically ventilated. So if the battery vents...pressure won't build up inside and cause an explosion.
You will probably be OK, because it is a high quality protected battery, but you are skirting along the edge.
Here is the reason from http://www.e-cigarette-forum.com/forum/ecf-library/129569-rechargeable-batteries.html:
Power rating for rechargeables
The critical factor for ecig mod use is the C rating (discharge current) in amps. The minimum possible value for safe and effective ecig use is 1 amp (= 1000mA) although ideally it needs to be higher. The ideal rating is 2 amps (2000mA) or better as an atomizer usually draws 1A to 2A.
Chart of C ratings vs size
1C or less for low-quality Li-FePo4
Assume 1C for generic Li-ion unless otherwise noted
1.5C for ultra/sure/trust/-fire Li-ion
2C for AW ICR (Li-ion)
3C for BDL 10440 IMR (Li-Mn)
5C for BDL 14500 IMR (Li-Mn)
8C for AW 14500 and 16340 IMR (Li-Mn)
10C for AW 18650 IMR (Li-Mn)
10C for AW Li-FePo4
Note:
Tenergy etc Li-FePo4 (small cells) - <0.55A (~1C - half an amp or less - not suitable for ecig use)
Max drain rate in amps is C in mAh / 1000 x C rating
Example: an AW IMR Li-Mn 14500 battery has a capacity of 600mAh. The C rating is 8C (it can supply 8 times the capacity). Therefore the max discharge current in amps is:
600 x 8 over 1000 (600 multiplied by 8 divided by 1000)
= 4800 / 1000
= 4.8 amps
This shows it has enough beef to safely and effectively run an atomizer - which some 14500's don't. In other words it is less likely to go into thermal runaway if there is an internal fault in the battery and is then used to power a device that draws a relatively high current such as an atomizer; and it will not suffer from excessive voltage drop when powering the atty.
Useful formulas
Amp draw = voltage / resistance
Example: a 5 volt mod is used with a 2.5 ohm atomizer - what current is drawn?
5 / 2.5 = 2
The battery must supply 2 amps.
Power used by atomizer in Watts = volts x amps, or volts x volts / resistance
Example: a 5 volt mod delivers 2 amps to the 2.5 ohm atty - what power is used?
5 x 2 = 10
The atty uses 10 watts
or
5 x 5 / 2.5 = 10 watts
In your case, your amp draw is 1.85 (3.7/2.0)
To calculate the amps supplied by your battery, multiply your AW protected C rating (2.0) times the mAh of the battery (750 mAh), divide it by 1000, and that will tell you the amps supplied by the battery. It is 1.5 which is below the 1.85 amp draw of your atty; therefore, you will be overstressing the battery
Recently I search for higher mAh than AW IMR 18650. Then I read about this
AW P18650 -2900
- Built with LiNiCoO2 NNP cells.
- Three triangulated raised dots ensure solid cell to cell connection when used in series.
- PCB protection against overcharge/ over discharge / short circuit.
- Safety vent with thermal cut off protection.
- Heat Resistance Layer (HRL) technology that forms an insulating metal oxide layer between the positive and negative electrodes. The layer prevents the battery from overheating even if a short circuit occurs.
SPECIFICATIONS:
Nominal Voltage : 3.6V
Capacity : 2900mAH ( rated at 0.2C discharge 4.2V - 2.5V @ 25℃ )
Operating Temp. : Charge 0 to 45℃ / Discharge -20 to 60 ℃
Recommended Charge Rate : 825mA ( ambient temp. 25 ℃ )
Max. Discharge Rate : 5.8A ( ambient temp. 25 ℃ )
Dimensions :18.52 X 68.16mm ( +/- 0.3mm )
Will this sufficient for Reo Grand? It's a bit longer than AW IMR 18650.
AW P18650 -2900
- Built with LiNiCoO2 NNP cells.
- Three triangulated raised dots ensure solid cell to cell connection when used in series.
- PCB protection against overcharge/ over discharge / short circuit.
- Safety vent with thermal cut off protection.
- Heat Resistance Layer (HRL) technology that forms an insulating metal oxide layer between the positive and negative electrodes. The layer prevents the battery from overheating even if a short circuit occurs.
SPECIFICATIONS:
Nominal Voltage : 3.6V
Capacity : 2900mAH ( rated at 0.2C discharge 4.2V - 2.5V @ 25℃ )
Operating Temp. : Charge 0 to 45℃ / Discharge -20 to 60 ℃
Recommended Charge Rate : 825mA ( ambient temp. 25 ℃ )
Max. Discharge Rate : 5.8A ( ambient temp. 25 ℃ )
Dimensions :18.52 X 68.16mm ( +/- 0.3mm )
Will this sufficient for Reo Grand? It's a bit longer than AW IMR 18650.
Those will work very well in your Grand, but may compress the spring too much. If you're going to use a high mAh Li-ion, protected AW or Redilast batteries are your best choices, IMO.
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