4.5 amp good for 2.0 ohm carto?

[NerdVap0r]

I have 2 efest iimr 18500 1100mah flat top laying around. Would a AW 18490 be the better choice for my next purchase? I bought a ton of boge 2.0 ohm for my mech. Just hoping it would safe with 2.0 ohm. I have 18350 (6A) & 18650 (10A) AW imr that i think are pretty safe at 2.0 ohm cartos. Any feedback & advice would be greatly appreciated. Just trying to make use of my cartos on my mech. ^^.

 

[Gonzi]

The max your pulling out of a fully charged battery with a 2.0 ohm carto is 2.1 amps. You are perfectly safe there with any 18350 IMR or 18490 IMR. I would highly recomend AW IMR over Efest due to quality and longevity of the battery in my experience.

 

[MorpheusPA]

To determine the amp draw you'll need:

Amps = Volts / Resistance

It's always wise to use the maximum voltage of the battery (4.2) so you're getting the highest amp drain you'll experience. So really, just use:

Amps = 4.2 / 2.0 (the resistance in your case) = 2.1 Amps

You're golden with your 4 amp battery. It's wise to allow a safety factor of at least fifty percent (if you can) on amperage, so I'd never use a battery with a draw lower than 2.1 * 1.5 = 3.2 Amps.

Even by that extremely safe standard, 4 amps is well over it (and a 95% safety factor).

 

[Gonzi]

To determine the amp draw you'll need:

Amps = Volts / Resistance

It's always wise to use the maximum voltage of the battery (4.2) so you're getting the highest amp drain you'll experience. So really, just use:

Amps = 4.2 / 2.0 (the resistance in your case) = 2.1 Amps

You're golden with your 4 amp battery. It's wise to allow a safety factor of at least fifty percent (if you can) on amperage, so I'd never use a battery with a draw lower than 2.1 * 1.5 = 3.2 Amps.

Even by that extremely safe standard, 4 amps is well over it (and a 95% safety factor).

I would have posted the formula, but I don't use it anymore since I have an app for that.

 

[NerdVap0r]

To determine the amp draw you'll need:

Amps = Volts / Resistance

It's always wise to use the maximum voltage of the battery (4.2) so you're getting the highest amp drain you'll experience. So really, just use:

Amps = 4.2 / 2.0 (the resistance in your case) = 2.1 Amps

You're golden with your 4 amp battery. It's wise to allow a safety factor of at least fifty percent (if you can) on amperage, so I'd never use a battery with a draw lower than 2.1 * 1.5 = 3.2 Amps.

Even by that extremely safe standard, 4 amps is well over it (and a 95% safety factor).

Greatly appreciate you two, that gave me peace of mind as to not waste these efest batteries i dont use since i got AW 18650 and 18350's

I would have posted the formula, but I don't use it anymore since I have an app for that.

I ust downloaded an Ohm's law app ater i saw you mention it , thx. Looks like it came out to be 2.1 amp like you guys said