Multimeter DT-830B 9V battery voltage check problem

[mattcasdorph]

I'm willing to bet its an alkaline battery!

[NormalGuy14]

I dont know what the meter is set to test but it is definitely not DV voltage! Turn the dial 5 clicks counterclockwise to get the correct results.

[kiddy1992]

@NormalGuy14 i dont believe it bud someone apparently thought he could make an circuit that works specially for battery's, it says 1.5 and 9 v on there. i wonder who thought that was an good idea. and correct me if im wrong, bud voltage isnt load related that much. and the multimeter is an slight load isnt it?

[NormalGuy14]

@kiddy1992 Yes there are options on certain multi-meters often marketed as "Battery testing" feature.

Point is that batteries (9V, 1.5V etc) are designed to handle a certain load and Multimeter acts as 'that' load to tell if there is enough juice remaining in he batter to handle that much load.

[adelconte]

My multimeter has the same function and it says 9V should read 25mA.

I took readings from six different used 9V batteries and the values ranged from 14 to 24.3mA (five batteries were closer to 24 because they are not that old).

I believe then that the unit is milliampere.

(BTW, I was checking the fire alarm batteries.)

[MrAlexifrim]

it is not calibrated proprietly

[TheSonOfThor1990]

I have this model. Your checking amps not voltage.

[1521joe]

your using your meter wrong

go to the tutorial

[bowlingblogger]

I have the same multimeter. The battery tester function you have selected places a maximum current draw of 25mA on a 9V battery (or 4mA on a 1.5 volt). If it reads 25mA (or a little above), your 9v is full. A lower reading indicates the battery is not at full capacity. This info is from "NLee the Engineer's" review on Amazon of this multimeter. (He has lots of awesome charger and battery reviews too.)

What's strange is that I have a 9v reading the same mA as yours (~21), but it's down to 8v.

[frecuenciajuaniyo]

check the battery of your multimeter, defective batteries are a reason from wrong measurements..

[matty01231]

where it says dcv on the dial try putting it to 2000m and 20 it should work then :)

[cednicek]

@matty01231 Yes, I know that :) I am not just a noob, but... You cannot measure voltage of battery without load. You need some load, so that is why I try to measure with this feature, but don´t know what is showing to me, in which units.

[ubuntututorials]

Could be some kind of convenient battery indicator. Like at 1.5 volts it reads 4 (depending on the counts/resolution of your meter). This would give you approximately 24 units at 9 volts; if that battery was discharged to about 7.7 volts (7 volts is about the dead voltage for a 9V) then it would fit. Or something like that.

[erkrystof]

Thanks! The only thing I can think of is that there isn't any real load here, just the battery directly, I can only think that would give odd results. Sending you a forum post in a youtube message, too long to post here.

[erkrystof]

Looks like you're checking amperage, not voltage here, but it's hard to tell with it being a bit dark.

[cednicek]

Thank you for response, by the way your videos are superb :) I have another one multimeter from another brand, but same results. I want to know, what is output unit. Because I want to measure battery voltage under load, it is supposed to do it.

In the description is link with large image... Thank you for help

[dying2l]

@cednicek Hey I'm getting the same results from my multimeter.