how to determine a batteries amp limit?

[Ebertshay]

Hey everyone!
I understand how to calculate amps, volts, watts, ohms....
So I guess I have two questions.
First, I should be using amps to determine if my setup is safe, right?
Second, how do I know how many amps my battery can handle?
Thanks!

 

[Baditude]

The standard is to use a battery's "continuous discharge rate in Amps". This information is calculated by the battery's C rating. Some manufacturers and vendors include this information in the product listing, most do not. What does a battery's C rating mean?

I've accumulated a large list of IMR and hybrid batteries with their continuous discharge rate in Amps here:

AW IMR
18650 2000mah 10Amp CDR
18650 1600mah 24A
18490 (1100mah) 16.5A
18350 ​(700mah) 6A

MNKE IMR
18650 1500mah ​20A

Panasonic ​or Orbtronic hybrid
CGR18650CH (IMR/hybrid) 2250mAh 10A
NCR18650PF (LiNiCOMnO2) INR/ICR/IMR Hybrid 2900mAh 10A
NCR18650PD (LiNiCoAl) 2900mAh 10A
Orbtronic 18650 SX22 (hybrid) 2000mAh 22A

Sanyo
UR18650EX 2000mAh 20A

Samsung hybrid (LiNiCoMnP)
INR18650-22P 2200mAh 10A
INR18650-20R 2000mah 22A

Sony hybrid
us18650v3 IMR 2250mAh 10A
us18650vct3 1600mAh 30A
us18650vtc4 2100 mAh 30A

EH IMR
18650 2000 mAh 16A
18650 1500 mAh 22A
18500 1100 mAh 8.8A
18350 800 mAh 6.4A

Efest IMR
18650 (IMR/hybrid) 2250mAh 10A
18650 2000mAh 10A
18650 1600mAh 30A
18490 1100mah 8.8A
18350 800mah 6.4A

Use you coil's ohm measurement and battery voltage (4.2) with the Ohm's Law Calculator to find the Amp draw the coil will pull from the battery. The "current" (Amps) should not exceed the battery's CDR in Amps.

 

[Ed_C]

Thanks for that. Very useful information.

 

[Traver]

If you don't know google it for amps. There are many vendors on the net that have battery specs.

 

[Ebertshay]

Thank you that's exactly what I needed!

 

[KingCloud502]

thank you, that list is very helpful!