Discontinued The RBT Milaana (unregulated single 18650)

[KeroZen]

1A at 60V would produce the same power as 14.3A at 4.2V given the same resistance (I based on the reported 60W figure)... or 2A at 30V etc...

 

[ZC]

1A at 60V would produce the same power as 14.3A at 4.2V given the same resistance (I based on the reported 60W figure)... or 2A at 30V etc...

Yeah that's exactly what I started thinking about when I started looking at DC-DC modules. No need to have the same voltage, just the same wattage. (Which is much easier to find the appropriate power source for.)

 

[mrbonsai420]

Sad day in my house. I don't know what happened to my fantastic 3 second heat up Milaana but now it takes about 10 seconds to get to a wispy hit. Before 5 seconds would combust. I have 7 different batteries and 3 chargers so the power supply isn't the problem. It just never seems to get to temp, almost like part of the heating element went out? Either way I know @RastaBuddhaTao is going to get her back running fine. I am just so spoiled by this thing I hate to lose her during repair.
Oh well, it happens.
I'll let you know how the repair process goes. I have vapes to get me by in the mean time so no big deal.

 

[murf2010]

Sad day in my house. I don't know what happened to my fantastic 3 second heat up Milaana but now it takes about 10 seconds to get to a wispy hit. Before 5 seconds would combust. I have 7 different batteries and 3 chargers so the power supply isn't the problem. It just never seems to get to temp, almost like part of the heating element went out? Either way I know @RastaBuddhaTao is going to get her back running fine. I am just so spoiled by this thing I hate to lose her during repair.
Oh well, it happens.
I'll let you know how the repair process goes. I have vapes to get me by in the mean time so no big deal.

When did you get yours?

 

[KeroZen]

@mrbonsai420 : like you woke up and now it's just... kaput? For no apparent reason?

 

[Bravesst]

Repair turn around has been quick, the sooner you get into RBT, the sooner you get it back.
@mrbonsai420
I've had same issue 2x. Once bad heater, once a kinda crushed battery connector (bottom). Needed to pull back up and make sure it stay centered, lots of contact. Before you send in, check battery connection.

@ZC
I think you have just turned Mi into mini Zion

 

[lazylathe]

@ZC. Have you seen the new magic flight power adapter??
That might works as well since the new one is adjustable!!

@GTAVaper i have a 0-32V 0-5A power supply that is fully adjustable. Picked it up off kijiji for $20. Will be trying it once I have the voltage and amperage figured out. Start low and work my way up.

What would be a safe voltage and amperage to start testing with?

This will be a game changer for me as I really dislike removable batteries for some reason...

 

[PDwasmy1st]

I had a MFLB for 3 years and loved it...until I tried a desktop. This thing is like the MFLB (in the most primitive sense) mixed with one of he highest powered desktops on the market. When we say clouds, we don't mean just some visible vapor. We mean full on bong milking, flavor tastin, lung bustin goodness that becomes extremely intuitive after a few days (almost instantly for some of us), and if you aren't getting the results we are, many of us would happily assist you individually until you get it perfectly (you'll get it though, it really isn't difficult at all with a few basic principles). And I'm sure if you didn't like it, someone here would happily buy it off you, they're pretty hot at the moment.

That's fine but it's not as easy as that when your not from USA, got to watch the postage, and need assurance i don't have to fork out for postage if it goes wrong, was told from PlanetVape to find a uk supplier because the plugs are all american i have a us to uk ac/dc adaptor surely he means that? [for the charger]

 

[friedrich]

What would be a safe voltage and amperage to start testing with?

If I'm not mistaken, the resistance of the heating element should be relatively constant.

If Milaana runs 45W at 4V, that means its resistance is (4V)²/45W = about 0.356Ω.

My understanding is that under a higher voltage, it would try to draw more current: let's say 20V / 0.356Ω = over 56A! (112W)

So I'd recommend staying in the ~4V range with a power supply that can handle over 15A.

Hopefully trying to run at a higher voltage will just trip your power supply's protection!

 

[hweezi]

I've got to go pick it up later 'round noon today. I guess it's for the best. Gives me time to charge up these NCR18650s that I already have from my Air.

I've only got a Intellicharger 2 so I wont know the exact volts, I hope it will suffice.


Was also wondering how long of a male joint would be too long. I've got some adapters from Planet Vape so I assume I'm okay on those but I've got random ones I've collected over the years I'm not sure about, would the PV ones be a good reference?

 

[Philreal187]

@cwheezy I believe the length you want is 22mm

I was using the haze battery charger and wasn't sure if it was getting the batteries up the whole way. I picked up a digital 4 port charger of ebay for $25 and found my haze charger was doing a great job getting the batteries to 4.2v. The new charger has zero sound and is faster so I'm extremely happy with it.

Not sure if.I expressed this yet but..


I FUCKING LOVE THIS VAPORIZER!!!

The more time I spend with it the more it molds in perfect to be my daily driver.

It has yet to dethrone my vapman. But that is a spiritual connection I doubt anything can come between.
How I see it is the vapman is Gandalf of vapes and milaana is the aragorn.

 

[ZC]

Gives me time to charge up these NCR18650s that I already have from my Air.

I don't know if the batteries you have for your air are OK for the milaaana. RBT has stressed that you need high drain 18650 batteries, rated at 20A for the milaana as it is an unregulated device and pulls a lot of power.

If your NCR batteries are rated at 6A or something along those lines I'd keep them out of the Mi.

 

[hweezi]

I dropped the b in NCR18650"b" but I am not sure if that makes it different, I used these for my Air.

These are the ones

http://www.planetvape.ca/ncr18650b-batteries.html

• Nominal Voltage : 3.7V

• Capacity : 3400mAh

• Cycle Life : > 1000 cycles

• Maximum Continuous Discharge Rate : 5A

• Dimensions : 18.15 x 649.82 (+/-0.05)mm

What's the precaution in using lower amperage...

I'm not well versed on this side of the table.

Either way I should be getting 3 with my order... or 2... I'm not really sure since I got two responses from both Ryan and Sheila saying completely different things and while I replied back I got no reply in return.

Hell, maybe they'll send me 2 by accident wouldn't that be funny.

 

[friedrich]

• Maximum Continuous Discharge Rate : 5A

What's the precaution in using lower amperage

Assuming the Milaana element is about 0.356Ω (see my above post), from a fully-charged battery it'll draw 4.2V/0.356Ω = ~12A. A battery rated for only 5A may protest violently under such a load.

 

[Dramma Lamma]

I dropped the b in NCR18650"b" but I am not sure if that makes it different, I used these for my Air.

These are the ones

http://www.planetvape.ca/ncr18650b-batteries.html

• Nominal Voltage : 3.7V

• Capacity : 3400mAh

• Cycle Life : > 1000 cycles

• Maximum Continuous Discharge Rate : 5A

• Dimensions : 18.15 x 649.82 (+/-0.05)mm

What's the precaution in using lower amperage, I remember it was a little more important with the Zion since you had a pair and regulation while I thought the Mi didn't really matter too much because it's unregulated. I thought high drain would suffice.

I'm not well versed on this side of the table.

Don't use those in the Mil, you could cause the battery to build heat (not the vape) eventually it could vent the battery and you don't want this.

The stuff you need to know/learn starts @ around 3 min.

But just watch the full 8 min vid, its all good stuff to understand.

When you see stuff on the news like "a kid in a e-cig compettion blew up his device in his face."

This is the type of thing they never tried to learn or choose to ignore.

 

[mrbonsai420]

When did you get yours?

I was a February pre-order. Got it when all of the first US pre-orders shipped.

@mrbonsai420 : like you woke up and now it's just... kaput? For no apparent reason?

Pretty much, yeah. I used it yesterday morning and it was blasting my head in 3 seconds. Come last night and a 10 second pre-heat wouldn't give me a good hit anymore. Batteries are solid.
I wanted to test further so I brought it to my buddies house who also uses a Milaana as his daily driver (Because I bought it for him). I didn't say anything and just handed him my Milaana to hit in his FC-UFO. He gave it a few seconds and gave it a go, looked up at me and said my battery was dead. I said try one of yours. He put one of his brown LG's fresh off the charger and same thing. After a 15 second wispy ass hit with the button held the whole time He then said "I think your Milaana is broken"? I told him that my test was complete and he had confirmed my suspicions.
He offered to give me his until I get mine back which was really nice but it's his only vape, I have 20 so I declined.
Sending it back in today. This is an early unit and I am a pre-order so I'm not upset about it. In fact the more issues like this RBT runs into and learns from the more consistent our Zions and future RBT vapes will be when the time comes. I will still recommend this vape to anyone.

 

[thekarmawhore]

I dropped the b in NCR18650"b" but I am not sure if that makes it different, I used these for my Air.

These are the ones

http://www.planetvape.ca/ncr18650b-batteries.html

• Nominal Voltage : 3.7V

• Capacity : 3400mAh

• Cycle Life : > 1000 cycles

• Maximum Continuous Discharge Rate : 5A

• Dimensions : 18.15 x 649.82 (+/-0.05)mm

What's the precaution in using lower amperage...

I'm not well versed on this side of the table.

Either way I should be getting 3 with my order... or 2... I'm not really sure since I got two responses from both Ryan and Sheila saying completely different things and while I replied back I got no reply in return.

Hell, maybe they'll send me 2 by accident wouldn't that be funny.

DANGER WILL ROBINSON!!


You need to use batts with 20A min. continuous discharge rate, or risk 'splodey head'

 

[killick]

'splodey head'

Splodey Head - now I wanna change my nick

 

[KeroZen]

@mrbonsai420 : please check the internal battery tab as suggested above, it could be bent and making bad contact. Otherwise I have no idea how the heater could develop such an issue without receiving a physical shock or something... or maybe it did overheat and the metal changed shape inside, lowering the amount of strands carrying the current in parallel?

--

EDIT: removed part that was full of shit

 

[GTAVaper]

Yeah that's exactly what I started thinking about when I started looking at DC-DC modules. No need to have the same voltage, just the same wattage. (Which is much easier to find the appropriate power source for.)

If anyone finds a DC-DC converter that takes a higher voltage (less than 60v) and less than 5A and converts to about 4v and up to 20a....then please let me know

 

[friedrich]

For the power supply, my remark was of course valid only if you have a device able to regulate BOTH voltage and amps at the same time. If you can only set the voltage and it supports up to 5A (but with no amp control) it's dead, do not try it, the heater will glow like a lamp in no time and your power supply will hopefully cut under the too heavy load.

Wouldn't limiting the current to 5A just be equivalent to driving with 5A×0.356Ω* = ~1.8V (9W)? Except the power supply's current limiter would be tripping (at any voltage over that ~1.8V).

* keeping in mind this is a total guess

 

[Bravesst]

Dave mods, Alan's mods, ed stem, PV flavor savers, joda on way. Things are gonna get fun around here.

I'm "Mod Guy!" Lots of pics, vids, reports to follow...

Pic 1: TABLETOP MILAANA KIT - don't leave home without it
Really starting to dig long stem

 

[hweezi]

Well, I'm off to bed then. Thank fuck I work nights, I can sleep while these charge.

Thanks for the info.

 

[KeroZen]

@friedrich : yes, I'm full of shit, for some reason I thought it could be both constant current and constant power at the same time but it's not possible. So disregard my last two posts they don't make sense, there's only two degrees of freedom.

If power and resistance are fixed, there's only a single possible voltage. And if using a constant current power supply with a given resistance, it would yield a low voltage like in your computation.

Now I can crawl back into my cave to hide my shame...

 

[hweezi]

Alright, so I lied, I've been prepping still for later, cleaning my stems and all. I must say though I do notice a glue smell quite a bit. I wouldn't say you can taste it from drawing though.

Could you not have a titanium heater cover instead of glass?