I've had my V5 for over 10 months now, and it's still going strong even with some serious drops. The fire button can be finicky and not fire or scroll through the menu during hits, but it doesn't happen all the time. Noalox is a must.
Recently I started building coils and wanted to know exactly the lowest ohms the V5 will still fire. I want to say it's 1.5 ohms, but I havent been able to find out for sure.
Hello TractorWill. I agree that Noalox is a must. The symptoms you describe with your button may be the first signs that the button is starting to go bad. This happened to me on all 3 of my Zmax's after for the first couple of months until it got so bad that I had to replace the switches (two V3's and one V5). Hopefully, your button won't get any worse but if it does, this forum thread contains detailed instructions and photo's on how to replace the switch as well as a YouTube video I put together.
If you read the Sigelei V5 product description, it states that 1.2 ohms is the lowest resistance it will accept. However when I've tried anything between 1.2 and 1.3, mine didn't want to play ball (screen showed the low ohm error). The lowest I could go was 1.3, but that may differ with your device. Best of luck to you!
Noalox won't help anything on the button or switch. Noalox can help on the tube and battery cap threads. I have used Noalox on my two V3s but never on the 7 month old V5. I just keep the threads very clean on the V5 and haven't had any trouble.
Haven't post for some time, just a quick update if anyone find it usefull.
My V5 have been dropped numerous times, to the point of the removable top cap wouldn't tighten down anymore, the board shifted up quite a bit and the misfires getting more frequent. It still works if the button is pressed down firmly.
Even though I got other mods to replace it but I still kind of felt attached to it. Obvious way is to fix it. I remembered reading here people like fairmana,Jeremy R,yzer(sorry if I've mistaken) and few others managed to remove the top cap as it is pressed fit.
I used a discarded CE5 clearo to screw down the ego threads on the V5 tightly, then wrapped the knurling portion of the CE5 with masking tape and clamped that part on a vise as tight as I could without breaking.
With batteries removed and telescoping tube all the way up, I tried wigglying it and initially don't seem to budge at all. With more patience, I began to see gap between the top cap and the body of the V5 till it finally popped out. Wires are all intact and the board slides out easily.
Cleaned up all I can then put couple drops of contact cleaner and lubricant into the gaps between the switch and switch body, press the button and rotate a few times. Assemble the board back into the body, then cut a semi-circle 1mm thick cardboard and put it on top of where the half round plastic cover is(opposite the screen) to prevent the board shifting up again.
Since my button is the clear plastic, it's easy to align it to the switch on the board. When I got it aligned, the screen sits a bit too low rather than centered on the window, but it's ok to me coz everything is readable and its straight rather than crooked. Then stuffed a small piece if cardboard between the half round plastic and body wall to make it snug and prevent the alignment from shifting when driving the top cap back on.
Took a 15mm deep socket wrench which clears the 510/ego part and bears on the flat land of the cap. I suppose I can use the vise to press it in, but I just used a small hammer to lightly knock it back in.
Chuck in the 2 x 18350 into it, and button works real good with a lighter effort to boot
Did a test on the max power the V5 can put out. It seems that mine would not fire anything below 1.4ohms.
With a 1.4ohm coil, set to Mean, 6V it fires at 5.85 according to my multimeter, that's like 24W? No wonder it hits harder than my Sig20W at 20W. If not mistaken,Jeremy R also tested it to 24-25W?
I still love this V5, been to a lot of places with me, very reliable,compact and powerful(with 2 x 18350s)
Well I haven't been on the forum for a long while but needed to make sure I could use flat top batteries in my Zmax v3 and I knew I could find the answer here. So I have had my Zmax v3 for 1 year and it still works. Yes I've took the end cap off to re-seat the board 2 times but no big deal. That is until I was cutting the grass. So I'm about done less than 1/4 acre to go when the plastic cover over the blades on the lawn tractor comes off. Now I've fixed the tractor 3-4 times that day and it's the last time I'll be cutting this year so I got lazy and figure I'll just fix everything when I put it up for the year. A little later I drop my Zmax it hits the deck and I watch as it goes through the blades! I kill the tractor and sit there chewing myself out for a long while. When I start looking for the pieces the first piece I find is the top of the RBA a little beat up but not bad. Then I find the bottom of the RBA, top end cap with the circuit card still attached then the rest of the Zmax. Looked for a while but couldn't find the button. So I put everything back together (with a new wick) grab a small stick and bingo it works!! I now call it my magic stick!![]()