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#11 (permalink)      11/29/2014 7:40:20 PM US Central   quote/reply + tips
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pickles
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HybridMask, you are always so worked up and worried about what to get. Relax bro. Deep breath, exhale.

Get the D2. I have one. It's good. Lots of blinkey lights and stuff, doesn't make any noise. So far it hasn't exploded, so probably safe enough.
#12 (permalink)      11/29/2014 7:44:35 PM US Central   quote/reply + tips
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iggys
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I second that,, the D2 it is all I use now..
Only a genius can say these four words out loud four times without stuttering: Eye, Yam, Stew, Peed Congratulations, you are now a genius
#13 (permalink)      11/29/2014 7:55:59 PM US Central   quote/reply + tips
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HybridMask
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Thanks for the help Pickles. You always cheer me up (don't distort what I said, you bastards! lol)

Basically, I am always worried because getting vaping stuff here in Brazil is a bit impossible, since ecig are prohibited here.
I know only two places that sell the Nitecore i2, and they sell it for almost US$50,00... So in my head there is some little guy saying "Dude, and if something happen to the charger? It will take 2 months or more to get another from fasttech... So better to get a good one, right?".
That's what always happen... xD

Thanks Pickes and iggys, infinite kudos for you two. (:
#14 (permalink)      11/29/2014 8:44:12 PM US Central   quote/reply + tips
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Migweld
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To add, if you want to charge 2 big capacity batteries faster D4 is better/faster
Output current: 375mA x 4 / 750mA x 2
D2 Output current: 500mA x 2.

D4 best if you have 3500mAH and big 26650 batteries....
#15 (permalink)      11/29/2014 8:49:05 PM US Central   quote/reply + tips
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HybridMask
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Thanks man. I will only use the D2 for 18650 batteries... In low charge probably, to keep the batterie in a good shape lol.
#16 (permalink)      11/29/2014 10:56:01 PM US Central   quote/reply + tips
JPBel
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HybridMask wrote:

Thanks man. I will only use the D2 for 18650 batteries... In low charge probably, to keep the batterie in a good shape lol.


A 0.5C to 0.8C charging rate, with a charging time of not longer than 3 hours, are what is recommanded for 18650.

EX: a 2200 mAh lithium battery can be charge safely at current ranging from 1100 mA to 1760 mA.

I use an accucell 6, it is about the same price.
It require a jig to hold cylindrical batteries tho.
But it have better range of parameters, to suit almost any battery chimistries of any capacities.

#17 (permalink)      12/26/2014 4:04:16 PM US Central   quote/reply + tips
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HybridMask
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Hey @pickles, I have a question.
Why does the mode in the charger change from CC to CV when the batteries are almost completely charged? I have Nitecore D2 (thanks for the help @pickles) and I charged two Samsung 25-R.
Also, the charger itself have a little burnt smel, but it's just a little. The batteries are a little warm, but nothing abnormal. Also, no noise at all.
#18 (permalink)      12/27/2014 1:10:16 AM US Central   quote/reply + tips
JPBel
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HybridMask wrote:


Why does the mode in the charger change from CC to CV when the batteries are almost completely charged?


Because it is the way of charging lithium batteries.

Current is limited in the first phase of the charging process because the battery will try to grab as many amps as it can.
This is due to the voltage difference between the charger voltage and the battery voltage and the low internal resistance of the battery.

Once the voltages are almost equal, the current will drop accordingly.
At this point constant current limiting is no longer require and constant voltage take over.


Edited on 12/27/2014 at 1:11 AM. Reason:
#19 (permalink)      12/27/2014 8:21:13 AM US Central   quote/reply + tips
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HybridMask
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Thanks for the explanation, mate! Much appreciate it!

Also, if you don't mind, I have another question.
I charged in 500 mah (normal mode). It's 500 mah per hour?
#20 (permalink)      12/27/2014 6:12:03 PM US Central   quote/reply + tips
JPBel
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HybridMask wrote:

Thanks for the explanation, mate! Much appreciate it!

Also, if you don't mind, I have another question.
I charged in 500 mah (normal mode). It's 500 mah per hour?


If your battery capacity is 500mAh and you charge it with a charger that provide 500mA, it will take 1 hour + ~2% to fully charge it.
If battery capacity is 1000mAh and you charge it with 500mA, it will take 2 hour + ~2% to fully charge it.