Hi everyone,
I have a lithium battery ( 19,5V , 6.2Ah) to power logging tools which work normally under the supply voltage from 14V to 24V and and current from 70mA to 110 mA. Based on these information , anyone can help me calculate how long Lithium battery can supply enough power to make logging tools work normally. Thank so much ..

 

Just a ball-park estimate... If the average draw is 100mA, then a 6.2Ah battery will last about 62 hours and the terminal voltage will drop somewhat. Final terminal voltage estimate would be based on actual battery specifications (curves published by battery manufacturer)

 

What kind of logging tools only draw 100 mA. At 19.5 V that's only 2 W. Are you sure you have that information correct?

 

What kind of logging tools only draw 100 mA. At 19.5 V that's only 2 W. Are you sure you have that information correct?

Data logging?

 

Unless the "logging tools" are designed for a universal voltage input, probably some sort of voltage converter would be required. A24 volt device may not perform very well on 19 volts, and a 14 volt device might have a problem with 19 volts.
I am guessing that the 19.5 volt battery pack is originally intended for a computer. So connections may be a challenge.
But that is a guess, based on no information. I am NOT a mind reader.

 

Data logging?

Ah. That might well be the case and would make a lot more sense. Having lived on a mountain for so many years, I hear logging tools and I think chain saws and the like.

 

Ah. That might well be the case and would make a lot more sense. Having lived on a mountain for so many years, I hear logging tools and I think chain saws and the like.

I thought the same. The data logging was originally a joke, but might well be what he meant.