Problems with Vamo - Low Voltage shown on fully charged battery

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Brainspackle

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Oct 31, 2012
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I received my Vamo from Health Cabin yesterday. I immediately popped in a fully charged button top AW IMR 2000mah 18650. It worked for all of about 15 minutes before I started getting a low voltage error when pressing the fire button. I put the battery in my Zmax and it works great - reads 4.1 volts (exactly like I would expect a fully charged battery to do.

I think the issue with the Vamo may be in not enough spring tension to provide good contact, resulting in enough resistance in the battery connections to make the Vamo's circuits think the battery is low.

Is this a known issue? Any thoughts or suggestions? Is my guess on the issue even a remote possibility? Or did I just get a bad circuit board and need to send the Vamo back?

Did you ever get this resolved? I'm having the same issue with mine
 

graybuck

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I just got a new Vamo from Smok tek. I get Lo v showing as well. Tryed to extend the sping but it does not help. Tried three different fully charged batteries, multiple carts. Mine won't even fire. It comes on, then shows Lo v as soon as I try to fire. I am guessing this is a real problem as nothing I am doing is fixing this probem. First mod I have ever purchased that was DOA. Did anyone ever figure this out or send it back?
 

AnsonJames

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I just got a new Vamo from Smok tek. I get Lo v showing as well. Tryed to extend the sping but it does not help. Tried three different fully charged batteries, multiple carts. Mine won't even fire. It comes on, then shows Lo v as soon as I try to fire. I am guessing this is a real problem as nothing I am doing is fixing this probem. First mod I have ever purchased that was DOA. Did anyone ever figure this out or send it back?

What battery are you using?
 

cghildreth

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Still having the issue here - I've got a ticket out with Health Cabin and they've asked for pictures of the Lo v error message. The problem is intermittent enough that every time I pull out my phone to take a pic, it starts working properly again. Argh.

I have verified that its not a spring/connection issue - I put in a stronger spring, but there wasn't any difference.

FYI, the batteries I've tried are 2200 mah e-fest flat top 18650s and 2000 mah aw IMR button top 18650's. Both show same symptoms.
 

spooty

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Sep 9, 2012
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For the OP, I've always had a good connection but my AW 18650 did move inside the casing a bit. I could feel it sort of flop over. I have the long spring that comes with the version 2. Today I stretched it up more and now the rattle is gone. So maybe pull the spring up more?

This worked for me, Thanks.

Edit: Or not, problem returned.
 
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cghildreth

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The only time I get a Lo error is when I have a short or I'm trying to use a device at 1.2 ohms or lower.

Even though it wont fire can you check the battery voltage with the vamo? Resistance?

Yes - I can check the voltage when it happens - typically reads between 1.7 and 2.2 volts - the same fully charged battery will read approx 4.17 volts on multimeter and 4.2 volts on my zmax.
 
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