18650 vs 18500
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There could be a couple of things going on here. First whenever you put a load on a battery there is always some voltage drop in the cell. This drop will be greater with a higher amp load. A 18650 being larger tend to have a higher max amp rating and will keep higher voltages on the same load.
Also the age of a battery will also effect the voltage drop under load, with newer cells able to deliver higher voltages under load. The quality of the brands will also make a difference. There are also differences in mech's and the voltage drop they have due to design or materials.
Also the age of a battery will also effect the voltage drop under load, with newer cells able to deliver higher voltages under load. The quality of the brands will also make a difference. There are also differences in mech's and the voltage drop they have due to design or materials.
For the same reason an 18500 would hit harder than an 18350.
output current
internal resistance
Your car battery is 12 volts.
if you put 8 duracell 1.5v AAA batteries in series you get 12volts that can't start your car.
What are you using to measure the battery voltage with ? are the two battery's the same brand / amperage ?
Still puzzling though. Same brand (AW), both new batteries, and there's a very big difference in "power".
I get that the bigger battery has a higher amp load (thanks @HughDaHand), but with both batteries fully charged I don't see how it would be such a factor initially.
I get that the bigger battery has a higher amp load (thanks @HughDaHand), but with both batteries fully charged I don't see how it would be such a factor initially.
I am assuming you are using a mech mod? as a regulated mod would boost the voltage to your desired level.
I would say there are two possible causes:-
1 The 18500 mod has a higher resistance, giving it a good clean may help!
or
2 In general 18500's will have a lower capacity and current rating, and when you put the battery under load you will get more of a voltage drop.
I would say there are two possible causes:-
1 The 18500 mod has a higher resistance, giving it a good clean may help!
or
2 In general 18500's will have a lower capacity and current rating, and when you put the battery under load you will get more of a voltage drop.
Multimeter. Same brand, 18650 has a slightly higher amp rating.
AW IMR 18650 3.7V 2200MAH and AW IMR 18490 3.7V 1200MAH
The 18650 will put out more current with less voltage drop.
More current at a higher voltage = harder hit.
Watch how hard you work those little 18500's they might go into meltdown on ya if you over do it.
Well here's the deal, you build your coils according to your battery amp limit, the "harder hitting" battery is going to come from the least resistant mech and 510, that is were you would notice a difference .....................
Please list the 18650 device and the 18500.
If you just swap battery tubes on the same "unit" then yeah...you can DIRECTLY compare the batteries...but you have two different devices, right?
cheers
I
If you just swap battery tubes on the same "unit" then yeah...you can DIRECTLY compare the batteries...but you have two different devices, right?
cheers
I
wow; that's quite a difference;
one battery packs almost twice as much energy than the other.
if you are using an rda and have alligator clips to go with your multimeter, you could connect the multimeter to the rda posts and look at the voltage when you press the fire button.
The 18490 will show a lower voltage when you fire the coil.
'harder hitting" to me means less ramp up time which is easily achieved with a lower ohm coil and higher amp battery.
Most 18500 do well to have a 10 amp CDR and most 18650 have a 20 amp CDR.
With that said your voltage will drop more on the 18500 at a 5 amp load than it will on the 18650 with the same load. You are running the 18500 at 50% CDR and the 18650 at 25% CDR so less voltage drop with the 18650 and a harder hit.
With that said your voltage will drop more on the 18500 at a 5 amp load than it will on the 18650 with the same load. You are running the 18500 at 50% CDR and the 18650 at 25% CDR so less voltage drop with the 18650 and a harder hit.
The AW 18490 1200mah has a 18a CDR / vs / the AW18650 2200mah has a 20a CDR.
Any perception of one 'hitting' harder than the other is not related to the battery, unless one is older/has been damaged by over stressing.
That is only a 4.66a draw/drain using the OP's stated .9Ω.
4.2v / .9Ω = 4.66a
Any perception of one 'hitting' harder than the other is not related to the battery, unless one is older/has been damaged by over stressing.
That is only a 4.66a draw/drain using the OP's stated .9Ω.
4.2v / .9Ω = 4.66a
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