Battery question

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Chris01rob

Full Member
Nov 27, 2020
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I already know all this. I was pointing out the flaw in the logic behind your assertion that any 18650 battery can be used in any 18650 mod and that "Circuit protection on your mod will protect your device and detect the problem if something was to go wrong somehow because of the batteries" it utterly false in ALL cases. And yes, ALL CASES DO MATTER.



First off, I don't believe the OP was asking if any and all 18650 batts would work/fit in his mod. I believe he was basically asking what other 18650s he could use. Your answer of any will work and the mod will protect you, is dangerous and not really in-line with the decade of battery safety vapers have been pushed down our throats.

Secondly, no mod, as far as I know, is intelligent enough to know when you are exceeding a battery's amp limit and therefore protects itself and the vaper from doing so and from the negative outcome that could bring about. Therefore, using "any battery" is not safe. If it were, we'd all be vaping on Trustfires lol.

Besides, It's not wise to even trust a mod with the protections it does have. This is especially true with these cheap mainstream mods, but I would not put my faith in any mod, high-end or otherwise.
I agree , sorry for the incorrect information
 

Straydonkey

Senior Member
Nov 24, 2020
150
137
Palm Beach Florida
And when you do choose, I urge you to only buy from the following vendors as they are known to sell authentics. Vape stores are unreliable, no telling from whom they buy.

18650batteries.com
imrbatteries.com
liionwholesale.com
illumn.com

There are others, but those are very popular with US buyers/vapers.
Thank you, I appreciate that.
 
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DaveP

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You have to match your cells to the application to get best performance. If you are vaping at 60W and below you can use 3000mah cells with a 15A to 20A rating (the Samsung 30Q or the LG HG2 are good high MAH choices for under 60W).

For higher wattages you need cells with higher amp ratings and that generally means you will have to sacrifice MAH (vape time) for CDR (continuous discharge rating). The Sony VTC5A or the LG HG2 are good choices for higher wattage.

LG HG2 is a 3000mah cell that is rated at 20A and that makes it a good all around cell for low or high wattage vaping.

This chart lists cells for various wattage/amperages.

Best 18650 Battery | 18650 Guide - Comparison Chart
 
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Straydonkey

Senior Member
Nov 24, 2020
150
137
Palm Beach Florida
You have to match your cells to the application to get best performance. If you are vaping at 60W and below you can use 3000mah cells with a 15A to 20A rating (the Samsung 30Q or the LG HG2 are good high MAH choices for under 60W).

For higher wattages you need cells with higher amp ratings and that generally means you will have to sacrifice MAH (vape time) for CDR (continuous discharge rating). The Sony VTC5A or the LG HG2 are good choices for higher wattage.

LG HG2 is a 3000mah cell that is rated at 20A and that makes it a good all around cell for low or high wattage vaping.

This chart lists cells for various wattage/amperages.

Best 18650 Battery | 18650 Guide - Comparison Chart
That's the answer I was looking for thank you.
 

Straydonkey

Senior Member
Nov 24, 2020
150
137
Palm Beach Florida
You have to match your cells to the application to get best performance. If you are vaping at 60W and below you can use 3000mah cells with a 15A to 20A rating (the Samsung 30Q or the LG HG2 are good high MAH choices for under 60W).

For higher wattages you need cells with higher amp ratings and that generally means you will have to sacrifice MAH (vape time) for CDR (continuous discharge rating). The Sony VTC5A or the LG HG2 are good choices for higher wattage.

LG HG2 is a 3000mah cell that is rated at 20A and that makes it a good all around cell for low or high wattage vaping.

This chart lists cells for various wattage/amperages.

Best 18650 Battery | 18650 Guide - Comparison Chart
That link was great thank you. I get confused on amp ect, some batteries may be 18650s and I know a 3000mah will last lo ger than a 2000mah, but an 18650 may have different volts ect than another 18650, that's were I get lost. Need to find the best battery for a Laisimo L1 200w mod.
Laisimo L1 200W T/C Mod already had an 18650 I was using in my aegis solo throw sparks when in the charger, don't want that again lol
 
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Topwater Elvis

Vaping Master
ECF Veteran
Dec 26, 2012
7,116
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Texas
Hi very useful infrormation and you are right , however the amprage draw from your batteries will like you said be determined of the wattage that you vape on but the total draw will solely be determined by the resistance of you coil. When you calculate amp draw you need to know the voltage of your battery, the resistance of your coils and of course like you said the wattage in which u vaping at.eg, battery:3.6 v
Resistance:0.22

Wattage :60
Amp draw = 16.67
Fyi.This is a single battery demonstration as duel batt calculation gets more complicated as the amp draw will then also be determined on the voltage of the 2 batts together and vary on whether the mod is connected series or parallel this being because a coil that has the same ohmage in series will have a different ohmage in parallel, which like I said will change the total amp draw calculations final answer because amp draw also depends on resistance.

And although you can calculate amp draw by simply dividing the wattage by the total number of volts the battery supplies , this applies only to other devices, not vaping, as we use resistance to get our final product out and thats why resistance needs to be factored into total amp draw inorder calculate it correctly with vaping.
Have a fantastic day further

When talking about battery amp demands when using any semi decent regulated power device the above is completely incorrect.
Coil resistance is irrelevant, parallel / series makes no difference.

In simple easy to understand terms. ---> Calculating battery current draw for a regulated mod | E-Cigarette Forum

Also there is a batteries & chargers sub forum filled with lots of useful info ---> Batteries and Chargers
 
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somdcomputerguy

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    ..had an 18650 I was using in my aegis solo throw sparks when in the charger, don't want that again lol
    Ya batteries need sparks to run and when they leak out they won't run safely anymore and it's time to throw them away.. :cool: Tape the ends and see if there's an auto or hardware store or a recycling facility that will accept them. Don't just toss in the trash. Of course, it could be the charger itself that's bad. Even if it proves to be OK, the bad battery may have damaged the circuitry. It might be a good idea to replace your charger also.
     

    Straydonkey

    Senior Member
    Nov 24, 2020
    150
    137
    Palm Beach Florida
    Ya batteries need sparks to run and when they leak out they won't run safely anymore and it's time to throw them away.. :cool: Tape the ends and see if there's an auto or hardware store or a recycling facility that will accept them. Don't just toss in the trash. Of course, it could be the charger itself that's bad. Even if it proves to be OK, the bad battery may have damaged the circuitry. It might be a good idea to replace your charger also.
    Brand new charger
     

    AngeNZ

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    That link was great thank you. I get confused on amp ect, some batteries may be 18650s and I know a 3000mah will last lo ger than a 2000mah, but an 18650 may have different volts ect than another 18650, that's were I get lost. Need to find the best battery for a Laisimo L1 200w mod.
    Laisimo L1 200W T/C Mod already had an 18650 I was using in my aegis solo throw sparks when in the charger, don't want that again lol

    I'm usually st 50w, I will use 60-80 at times but not for long

    Since you've let us know the max wattage will be 80w, the rest is just maths.

    Your using two batteries:
    80watts/2
    = 40watts

    To find out what CDR battery you need just divide your wattage by 3:
    40/3 = 13A

    164ff016-f4d4-4cd9-bffa-5633214a61be-jpeg.889007

    So from Mooch's Recommended Battery chart, pick which cell you prefer that has a 15A, 20A or higher CDR rating

    And this blog post is helpful to learn when, why and how to wrap a battery.
    Tutorial: Re-wrapping a Battery | E-Cigarette Forum

    If a battery is producing sparks in a charger, it may have a serious tear or rip in its wrap
    Battery Safety | E-Cigarette Forum
     

    Hawise

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    Mar 25, 2013
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    That link was great thank you. I get confused on amp ect, some batteries may be 18650s and I know a 3000mah will last lo ger than a 2000mah, but an 18650 may have different volts ect than another 18650, that's were I get lost. Need to find the best battery for a Laisimo L1 200w mod.

    Hi Straydonkey,

    Is it possible you've confused amps with volts? All the 18650s of the chemistry we can use are the same voltage, although now that I've said that I recall that, even though the batteries have the same voltage range, they may be written as 3.6 v or 3.7 v. The thing about voltage is that it changes as you charge/discharge your battery. A fully charged 18650 of the type we use will be at 4.2 volts. As you use the battery the voltage will drop to about 3.2 v, at which point your mod will (or should) give you a low battery warning and refuse to discharge them any lower. The 3.6 or 3.7 v you see in the description of a battery is called the 'nominal charge', and it's more or less the average charge.

    Amps, or CDR, is another story. Different 18650s can safely provide a different number of amps. The CDR determines how many watts you can vape at. They also have different mAh ratings, which is a rough measure of how long the battery lasts between charges. Unfortunately, the stuff you put into a battery to give it a higher CDR or higher mAh takes up room, and since you've only got so much room you have to take out some of the mAh stuff if you want more CDR stuff. This means that as CDR goes up, mAh goes down. The trick to finding the right battery is getting the best balance between CDR and mAh.

    As to which is the best battery for you, I'd follow @Ryedan's advice here: Battery question

    Good luck!
     
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    Ryedan

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    Hi very useful infrormation and you are right , however the amprage draw from your batteries will like you said be determined of the wattage that you vape on but the total draw will solely be determined by the resistance of you coil. When you calculate amp draw you need to know the voltage of your battery, the resistance of your coils and of course like you said the wattage in which u vaping at.eg, battery:3.6 v
    Resistance:0.22
    Wattage :60
    Amp draw = 16.67

    Regulated mods don't work that way because there is a voltage regulator between the battery and the coil. This means the battery is not directly affected by the resistance of the coil.

    Go to the battery drain calculator at the Steam Engine site. Click on regulated, input atomizer resistance 0.22 ohms, set mode to VW, set power to 60 watts, leave the mod efficiency at the default 90% and set the battery voltage to 3.6. You will see the battery drain when its voltage is 3.6 is 18.52A which corresponds to a 66.67 watt drain because of the regulator's efficiency loss. That's what the mod's battery is seeing. The regulator however is outputting 3.63V, 16.51A and 60 watts to the coil.

    Now change the coil resistance to say 1 ohm and leave all the other settings the same. You'll see that the battery drain is still exactly the same, but the regulator's output voltage and amperage has changed because of the resistance change.

    There is one little complication here in that efficiency of voltage regulators changes somewhat depending on their output voltage and you will see some variation in battery draw because of that, but that can be modeled by changing the efficiency number to match the regulator's efficiency accurately. This data is actually available for some boards.

    Fyi.This is a single battery demonstration as duel batt calculation gets more complicated as the amp draw will then also be determined on the voltage of the 2 batts together and vary on whether the mod is connected series or parallel this being because a coil that has the same ohmage in series will have a different ohmage in parallel, which like I said will change the total amp draw calculations final answer because amp draw also depends on resistance.

    Dual battery mods are actually quite simple to model because it's still all about battery voltage and the watts set. For dual batts in series input their doubled voltage output and that calculator will output the correct data. In this case the battery current draw indicated is accurate for each of the two batteries.

    For dual batteries in parallel their voltage output together does not change so you can leave the voltage number the same as for one battery. However the amp draw on the batteries is split evenly between each of them, so just halve the number and that's what each battery will see.

    Ultimately, it's reasonably accurate to just consider how many watts a given battery can handle as per it's amp rating, and multiply that by the number of batteries. It doesn't matter if they are in series or parallel.

    This is for regulated mods, but of course with mechanical mods it is all about battery voltage and atty resistance.
     
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