Anyone know how to calculate 50ua parasidic drain?

It’s from 2 18650s…just trying to figure out how long it would be before te batteries died…they’re 2500ma…thanks

[quote=RecycledElectrons]

50uA is 50 micro-amps. That’s ( 50 / 1,000,000 ) Amps = 0.00002 Amps.

You may have slipped a cog; I do frequently :frowning:

I make it 50,000 hours - or about the span for an LED.

With two cells, should this double?

EDIT: Sorry, I only took in the first & last lines. You already had the 5.7 years :slight_smile:

Depends if they’re in series (no) or parallel (yes)

cool thanks for the info…but do 2 2500ma cells in series cells not represent as 5000ma? 5.7 years is plenty enough but just wondering

No, 2 cells in series does not double the capacity.

Series doubles the voltage, parallel doubles the Ah.

ahh thanks for the explanation…makes sense

The parasitic drain is probably less than the self discharge of the li-ion cell. So don’t expect 5.7 years. Li-ion’s tend to die within two years when sitting by themselves.

yeah I was just wondering if it was as bad as my h2 headlamp which dies in 3-5 days…I use this light so it’s all good…