problem with 5 volt device

[vermeer]

I haven't heard of anyone having this issue. My 5 volt device--the Big Kazoo--cuts out after a one or two second draw. I've used 510 attys and dual coil cartomizers--same thing---I get about 15 minutes of great vaping and then I need to shut off the device between hits because the device stops working--which need to be only 2 second hits. Any suggestions about which cartomizers might bwork better? I'm guessing that the resistance of the 1.5 carts is too low for 5 volts but that is what was recommended by the seller
--and as I said, the same thing happens with standard 510 attys. I'm getting a bit frustrated with finding a cartomizer that will work. Suggestions?

 

[JC Okie]

I think 1.5 ohm is way too low for 5volts. Have you tried an HV atty....say 3.0 ohm? That's what I'd suggest.

 

[haft2doit]

I think those dual coils are drawing too much juice. My provari won't let me go past 4v with a dual coil on it due to protection. I think you're tripping the battery's protection, or the 5v regulator. Dual coils work well at 6v with 2 rcr123 lifepo batts. lifepo batts have higher discharge rates than li ion. Just looked up the big kazoo and it uses 14500 bats. Those batts can't dish out enough juice for the dual coils. The only batts that should be used with them are high mah 18650's. I bet you could use IMR 14500s with them but they would have a short run time as well. I use IMR just to be safe. I'm betting after 15 min you have discharged the batts too much. Daul coils really suck up the power.

you can get some IMR 14500's HERE

Although if you can't use standard atty's that are regular resistance I would contact the seller.

 

[vermeer]

Thanks, I appreciate the help. Is it that the protected 14500 batteries are not going to be my best bet? Would anyone have a suggestion for a cartomizer? I still find it strange that more people are not having this issue.

 

[OldDragon]

You could try a 5volt passthru, one without a battery and threre for no cutoff.

 

[markfm]

Standard resistance cartomizers, somewhere in the 2.5+ ohm region, should be fine. Try some Boge cartos (standard, not the LR 2 ohm ones), they're pretty good, sold by many shops.

 

[AttyPops]

Standard (3.0 ohms) atties at 5 volt.

HV atties if you want cooler vape (3.3 + ohms)

LR atties (< 2.8 ohms) should generally not be used ... too hot. Dual coils may be an exception since they are 2 3.0 coils, for example (net 1.5 ohms).

The voltage regulator in your device probably thinks 1.5 ohms is a short. If not that, then you may need IMR batteries since they may be cutting out (protection trips). Since it is working for 15 minutes, then cutting out... could be a heat issue too.

 

[vermeer]

Thanks again--the strange thing is that the dual coil carts work fine for about 15 min.--as do the 510 attys--then only work (moderately) if I shut the device off for a split second--probably resetting. I'm going with the Boge standard 510 cartomizers--I've been assured these will work.

 

[simeon530]

I think your issue must be device specific. My current every day vape is a 5V GLV2 with a 2.5 dual coil carto. I don't get any cut out at all. Sounds frustrating though. I hope the boge 510's work for you.

 

[AttyPops]

There's a "device" in the batteries ... the protection circuit. Then there's the device itself (the mod). Either can have issues.

The device(s) don't know dual coil, from single coil, nor atty from carto. They only know (or react to) the ohm rating. The ohm rating determines the current draw, or energy consumption, of the atty/carto. If the change to IMR batteries doesn't work, use higher ohm whatevers.

IDK what regulator they put in the box mod. I haven't used 1.5 ohm stuff at 5 volts yet... regulators can trip. So can batteries. Like you say, power off/on to reset. Most regulators (and ?some? protected batteries) have a thermal trip too. Heat builds up... after 15 min.... trip.

Remember dual coils are new. Usually you would use std ohms (3.0) for 5 volts. Not 1.5 ohms.

3.0 ohms @ 5v = 8.33 watts heat, 1.5 ohms @ 5v = 16.66 watts heat... so twice the heat. This holds true for the electronics too (since they have some internal resistance).

 

[mgaruccio]

Are you using protected batteries or AW IMR's its very possible that the protection circuit in the battery is causing the issue as with a 1.5 ohm atty at 5v you are drawing over 3 amps which is more than most protected batteries are rated for. The carts are able to handle it as each coil is actually 3.2 ohms and is separated from the other so they do not produce too much heat and burn but the battery may not be able to put out enough current to keep up, which can possibly cause the protection circuits to trip to avoid the battery exploding.