Ego-t/C and multimeter measuring volts and ohms

[LycanFury]

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Hi Guys
i just tried to take the volts on my Ego-T 650 Mah battery fresh from the charging. using a MuItimeter a M830BZ. For a 3.7 Volt battery , got 3.9 volts, which I think is acceptable. My issue is with a Ego-c Variable Volt 1000 mah battery at 3.2 Setting It gives 3.2 in the meter and 4.8 gives 4.8 volt reading but from 3.8 to 4.2 its always 4.1 is It normal?
Apart from that When checking for ohms. The SR atomizers are 3.0 ohms and the L-R which has 2.0 engraved on the connector are all 2.4 ohms. My Question is again is it normal , I know we are not looking too Exact readings but what should be Considered as the margin of error.
also i think i spoiled one battery while checking for volts instead of keeping it on DC, i kept it on Amps settings it just keeps blinking when i put on an atomizer. can something be done or its a goner.


Thanks
LF

 

[jazzbo]

I doubt you ruined the battery by using the multimeter incorrectly. What you probably did was pushed the center pin of the battery down too far so that it no longer makes contact with the charger or the atty. Take a small jeweler's screwdriver or tweezers and gentle pull it back up a fraction of an inch. If that doesn't fix it, then yep, you might have a new paperweight.

 

[Black Strat]

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Hi Guys
i just tried to take the volts on my Ego-T 650 Mah battery fresh from the charging. using a MuItimeter a M830BZ. For a 3.7 Volt battery , got 3.9 volts, which I think is acceptable. My issue is with a Ego-c Variable Volt 1000 mah battery at 3.2 Setting It gives 3.2 in the meter and 4.8 gives 4.8 volt reading but from 3.8 to 4.2 its always 4.1 is It normal?
Apart from that When checking for ohms. The SR atomizers are 3.0 ohms and the L-R which has 2.0 engraved on the connector are all 2.4 ohms. My Question is again is it normal , I know we are not looking too Exact readings but what should be Considered as the margin of error.
also i think i spoiled one battery while checking for volts instead of keeping it on DC, i kept it on Amps settings it just keeps blinking when i put on an atomizer. can something be done or its a goner.


Thanks
LF

I have found that measuring voltage on the standard Joye eGo is difficult to its style of voltage regulation. Also have to be very careful not to short the battery while measuring. I did this once and got the flashing light business. Put the battery back on the charger for a few minutes and hold the button down for a bit after taking it off the charger. Then do the 5 click on and off. I think they have a mode they go into when shorted for protection. Putting the battery on the charger seemed to reset this.

If that doesn't work, the battery may be toast.

PS: I use electrical tape now to completely cover the probe except for a a tiny bit of the tip to avoid doing that again.

 

[LycanFury]

Thanks guys, tried both the ideas. I think I am a not so proud owner of a new paper weight.

LF

 

[spider362]

When measuring resistance with a DMM you need to subtract the resistance of the test leads from the reading.

First, short the test leads together and make a note of the reading; example: 0.3 ohms.

Subtract this from your actual reading; example: 3.0 ohms - 0.3 ohms = 2.7 ohms which is closer to the 2.5 ohms of a SR atomizer. And 2.4 - 0.3 = 2.1 which is very close to the 2.0 ohms of your LR atomizer.

Your DMM also probably has an error of plus or minus 1 digit, too, so your 2.7 could be 2.6 or 2.8 and your 2.1 could be 2.0 or 2.2.

 

[LycanFury]

Thanks spider for this advice. It sorts out a lot of things. My leads ohms is .5 so that puts things in perspective.
One question though. What about volts?

LF

 

[spider362]

Voltage should be accurate as long as the battery outputs pure DC.

If the out put is PWM (Pulse Width Modulation) or RMS (Root Mean Squared) then your readings will be off. These are very complex voltage outputs and only equipment designed to read this type will be accurate. If you're not sure what yours outputs just post the brand and model of your battery and someone should be able to tell you.

 

[LycanFury]

Voltage should be accurate as long as the battery outputs pure DC.

If the out put is PWM (Pulse Width Modulation) or RMS (Root Mean Squared) then your readings will be off. These are very complex voltage outputs and only equipment designed to read this type will be accurate. If you're not sure what yours outputs just post the brand and model of your battery and someone should be able to tell you.

Nothing fancy just few Ego-t 650 Mahand a Ego-C twist 1000 Mah.

 

[spider362]

I think those use PWM, or something similar, so you'll probably see the voltage readings fluctuating and the it will never settle down. You'll just have to guess that the actual voltage is somewhere between the highest and lowest readings.