Batteries Update
- Thread starter Rob Fisher
- Start date
What are u currently using on the reo bro?
I need to know cause I'm gonna be needing 18500s soon.
Any notable difference between the two? Or any preference?I have two of these..
and two of these..
That I currently use in the Reo mini.
Thanks. Was wondering if there is a difference between "Maximum Discharging Current" and "Continuous Maximum Discharging Current"?
E.g., for the 18650 3100 mAh they specify a max discharge current of 20A (which does not tally with the evidence above), but for the 18500 1000 mAh they specify a continuous maximum discharging current of 15A.
This whole battery thing is making me uneasy. I'm worried about what to buy for the mini and be able to vape safely. I want to be able to vape anywhere between .75 and 1 ohm. I wonder If this is possible on the Purple Efest 18500 or the Red series 18490.
I wish there was a Sony alternative in 18500
I wish there was a Sony alternative in 18500
EFest 18500 Purple looks fine (tested up to limit of 15A continuous): http://www.candlepowerforums.com/vb...eview-of-Efest-IMR18500-1000mAh-(Purple)-2014
Conclusion
These battery has very good high current performance, but the size limits the capacity (If you have 15mm more length, you can get more than twice the capacity).
With the performance of these cells, I will call it a good battery.
15Amp - 3Amp for safety = 12 Amp safe limit = down to 0.3Ohm build @ 4.2 Volts (freshly charged)
I would steer clear of EFest 18490 Red (tested up to limit of only 5A continuous): http://lygte-info.dk/review/batteries2012/Efest IMR18490 1100mAh (Red) UK.html
Conclusion
This cell works well at the currents I have tested.
At the current time I can only rate them acceptable, because Efest is a new company, and the batteries is not from one of the big brands.
5Amp - 2Amp for safety = 3 Amp safe limit = down to 1.4Ohm build @ 4.2 Volts (freshly charged)
My own conclusion: The purple 18500's should serve you well, not really sold on the 18490's though
Correction on purple calculation:
15Amp - 3Amp for safety = 12 Amp safe limit = down to 0.35Ohm build @ 4.2 Volts (freshly charged)
Shot for all the info bud
It's greatly appreciated! You seem to be very clued up on batteries
Just pulled the trigger on 3 Vtc 5's from Vapemob!
Will hit up VK to grab some purple Efest 18500's this week.
Will hit up VK to grab some purple Efest 18500's this week.
Shot for all the info bud
It's greatly appreciated! You seem to be very clued up on batteries
I'm happy to be of help - especially when it comes to battery safety
Doing a lot of research and reading in that field at the moment. Share the knowledge, share the power
Yes, thank you very much. The independent sources help a lot. I do not trust the Efest site as a source. Their terminology is very inconsistent as I pointed out in this post above.I'm happy to be of help - especially when it comes to battery safety
You are now our official battery expert!
Has the candlepower forum tested the purple Efest 3100 yet?
Received the following email from jone@sz-eyoung.com a couple of minutes ago:
"Dear Customers,
Thank you very much for supporting us always.
Our customers feedback that there are many fake Efest batteries in the market. Please Note: All original Efest producsts are only from our company. Our official email domains are @sz-eyoung.com or @efestpower.com. Please contact us if you found any fake Efest batteries, we will appreciate it very much!
By the way, there are many fake Sony and other brand batteries, but it is 100% sure that we sell only original batteries. We have a large number of inventory for VTC4 batteries. And we have most competitive price(4.24USD/pc). Welcome to order it. Please check the picture as below:
Just let me know if you have any question, I will reply you soon.
Best regards
Jone
SHENZHEN FEST TECHNOLOGY CO., LTD
www.efestpower.com
Skype: szeyoungsales"
"Dear Customers,
Thank you very much for supporting us always.
Our customers feedback that there are many fake Efest batteries in the market. Please Note: All original Efest producsts are only from our company. Our official email domains are @sz-eyoung.com or @efestpower.com. Please contact us if you found any fake Efest batteries, we will appreciate it very much!
By the way, there are many fake Sony and other brand batteries, but it is 100% sure that we sell only original batteries. We have a large number of inventory for VTC4 batteries. And we have most competitive price(4.24USD/pc). Welcome to order it. Please check the picture as below:
Just let me know if you have any question, I will reply you soon.
Best regards
Jone
SHENZHEN FEST TECHNOLOGY CO., LTD
www.efestpower.com
Skype: szeyoungsales"
Guess the only way to guarantee an original is going to the factory and fetching one
This fake story sucks!
I was telling @Rob Fisher this morning, I've been vaping a 1.3 ohm coil for the last few days since reading about this stuff to stay in the safe zone.
This fake story sucks!
I was telling @Rob Fisher this morning, I've been vaping a 1.3 ohm coil for the last few days since reading about this stuff to stay in the safe zone.
My problem with Efest batts are not that they are fake. Most vendors seem to order directly from Efest. But the descriptions on their batteries are suspect. And the terminology used on their web site is not consistent at all. And as soon as they say that there are many fakes of a competitor's batteries I really have to doubt their integrity.
I agree 100%
The Red Efests I posted earlier have been performing really well in every build I do. They do perform better than the purple ones, at least for me. And I wouldn't hesitate to get some more.
Glad to be of assistance, I feel your pain - I don't understand why they would provide false information on their own products; any good vaper does a ton of research before plunging head-first into something
I found the following while searching for some answers on the Purple EFest 3100Mah batteries:
http://www.ebay.co.uk/itm/2-GENUINE...rElectronics_Batteries_SM&hash=item2a3cf61419
Product Description : 2x EFEST 18650 IMR 3100mAh 20A LiMn Purple Unprotected Flat Top Rechargeable Batteries
Size : 18.20mm x 65.20mm
Nominal Voltage : 3.70V
Nominal Capacity : 3100mAh
Tested Capacity : N/A , 10A CC Discharge test , % of Claimed Capacity ECOLUXSHOP UK®
Charging Metod : CC/CV 4.20V
Discharge Voltage : 2.50V (Average Cut Off)
Charging Current CC : 1000mA
Rapid Charging Current : 3000mA
Continuous Discharge Current : 10A
Max Discharge Current : 20A
Measured Energy : N/A Wh (10A Test)
Internal Resistance : 0.10-0.12 Ohm
Weight : 47gr.max
Color : Purple
Protection : No
Model : Flat Top
Safe Run Up : 0.6 Ohm
(Also check out the graph on that page to see how it compares to some other popular batteries @ 10Amps)
Bottom line:
If you are happy to go as low as 0.6Ohm, these should not disappoint, any lower and you start running some risk. I think these would be perfectly suitable in a Reo/Kayfun but not so much on an RDA (Pro is obviously better battery life, con is that you would not be able to go any lower than 0.6Ohm and still feel safe while using them, unless you are fearless of course
)
Glad to be of assistance, I feel your pain - I don't understand why they would provide false information on their own products; any good vaper does a ton of research before plunging head-first into something
I found the following while searching for some answers on the Purple EFest 3100Mah batteries:
http://www.ebay.co.uk/itm/2-GENUINE...rElectronics_Batteries_SM&hash=item2a3cf61419
Product Description : 2x EFEST 18650 IMR 3100mAh 20A LiMn Purple Unprotected Flat Top Rechargeable Batteries
Size : 18.20mm x 65.20mm
Nominal Voltage : 3.70V
Nominal Capacity : 3100mAh
Tested Capacity : N/A , 10A CC Discharge test , % of Claimed Capacity ECOLUXSHOP UK®
Charging Metod : CC/CV 4.20V
Discharge Voltage : 2.50V (Average Cut Off)
Charging Current CC : 1000mA
Rapid Charging Current : 3000mA
Continuous Discharge Current : 10A
Max Discharge Current : 20A
Measured Energy : N/A Wh (10A Test)
Internal Resistance : 0.10-0.12 Ohm
Weight : 47gr.max
Color : Purple
Protection : No
Model : Flat Top
Safe Run Up : 0.6 Ohm
(Also check out the graph on that page to see how it compares to some other popular batteries @ 10Amps)
Bottom line:
If you are happy to go as low as 0.6Ohm, these should not disappoint, any lower and you start running some risk. I think these would be perfectly suitable in a Reo/Kayfun but not so much on an RDA (Pro is obviously better battery life, con is that you would not be able to go any lower than 0.6Ohm and still feel safe while using them, unless you are fearless of course
Thank you so much for all the trouble. A 10A Continuous Discharge Current is much better than the 4A the ECF source says.
Here is a translation of the article referred to. Some interesting reading (also the comments), inter alia, that these are in fact Panasonic ICR batteries (not IMR at all). Also here is a declaration by Efest wherein they state that the 3100 batt does have a CDC of only 10A and is only safe above 0.6 ohms.
Personally, I would not use these batteries below 0.8 ohms to feel relatively safe.
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Agreed 100% - I would always suggest leaving some room for safety as well. If someone wants to chase closer to that edge, there needs to be constant checking on battery temperature, etc - I'm rather lazy and don't like babying them like that
Alex, what is the lowest resistance you have vaped at on the mini?
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