You could just wire up the battery and 510 outside a box and test it. Probably the only way to know if it's kaputt.
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Actually did that with this board and now it is acting up. Hate to wire up and realize it's bad after I get it done.
Even if you did email them they wouldn't give u an update... I've emailed them three times
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Guys and Girls,
I want to make you aware of my Vapor Flask V2.5 DNA40 fiasco.
I made a rookie mistake by placing one of the batteries in - upside down (Woops)
Doesn't it suppose to have reverse battery protection?
It fried! A lot of SMOKE came out of it, one of the VTC4 batteries started to vent and the unit is now DEAD
Based on that experience, I can say: Vapor Flask V2.5 Does NOT have Reverse Battery Protection
It's going back to Vapor Flask for RMA. But it was having some intermittent screen issues any way.
I want to make you aware of my Vapor Flask V2.5 DNA40 fiasco.
I made a rookie mistake by placing one of the batteries in - upside down (Woops)
Doesn't it suppose to have reverse battery protection?
It fried! A lot of SMOKE came out of it, one of the VTC4 batteries started to vent and the unit is now DEAD
Based on that experience, I can say: Vapor Flask V2.5 Does NOT have Reverse Battery Protection
It's going back to Vapor Flask for RMA. But it was having some intermittent screen issues any way.
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Guys and Girls,
I want to make you aware of my Vapor Flask V2.5 DNA40 fiasco.
I made a rookie mistake by placing one of the batteries in - upside down (Woops)
Doesn't it suppose to have reverse battery protection?
It fried! A lot of SMOKE came out of it, one of the VTC4 batteries started to vent and the unit is now DEAD
Based on that experience, I can say: Vapor Flask V2.5 Does NOT have Reverse Battery Protection
It's going back to Vapor Flask for RMA. But it was having some intermittent screen issues any way.
I'm sorry to hear this. Let's make sure I have both oars in the water. The DNA 40 board is advertised as having reverse battery protection. I don't doubt it but have never tested it. Anyone? This leaves me to conclude ??? from your post that VF messed up the wiring somehow? I'm not an EE so don't hesitate to correct me.
Guys and Girls,
I want to make you aware of my Vapor Flask V2.5 DNA40 fiasco.
I made a rookie mistake by placing one of the batteries in - upside down (Woops)
Doesn't it suppose to have reverse battery protection?
It fried! A lot of SMOKE came out of it, one of the VTC4 batteries started to vent and the unit is now DEAD
Based on that experience, I can say: Vapor Flask V2.5 Does NOT have Reverse Battery Protection
It's going back to Vapor Flask for RMA. But it was having some intermittent screen issues any way.
Okay here is your answer... The board does have battery protection but what you did has nothing to do with the board... U created a direct battery short... Thus the venting and the excessive heat caused the destruction of the board
It is by no fault of the chip or the mod... but user error... Either was, Sorry it happened to u buddy... Had you put both batteries in upside down the reverse battery protection would kick in
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Parallel wiring is different from serial so when you put that battery upside down, you effectively shorted the two batteries between each other. If the board is dead it's probably from the heat generated by the batteries themselves.
Regards
Tony
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Regards
Tony
Sent from my GT-I9195 through Tapatalk
So reverse battery protection only works if you put them BOTH in the wrong way?! Wow.
I guess, if I would have reversed both batteries accidentally, the Reverse Battery Protection would have saved it
Basically, if I buy a DNA 40 device today I run the risk of getting a device with a bad chip and would have to send back to the vendor, who would either fix it or send me a new device, or send it to evolv, who would fix it, and then be sent back to me. Is this pretty much what COULD happen? I really want one, hassle free, and It wouldn't be a huge deal if I got a bad chip, I just want to make sure I understand the risks.
Most mods are single battery, and there is protection for putting that in wrong. The only way to protect dual batteries from just one upside down is with fuses or diodes. Those wouldn't be on or for the board. There can also be physical protection with contacts that will make up to the - but not the +.
Were I AMD, I'd ask for a replacement, anyway, because I bet most folks don't know what he just found out. Battery shorts like that are dangerous. Dual battery mod owners must pay attention and really should use the internal charger so they limit the opportunities to mess up.
Were I AMD, I'd ask for a replacement, anyway, because I bet most folks don't know what he just found out. Battery shorts like that are dangerous. Dual battery mod owners must pay attention and really should use the internal charger so they limit the opportunities to mess up.
I guess, if I would have reversed both batteries accidentally, the Reverse Battery Protection would have saved it
AMD,
You did try it with two new batteries - one of both of the batteries that were Bucking each other are probably wacked but the board may still be OK. Although you did say the display was acting up before the unexpected event.
Just curious.
I'd say, the best reverse battery protection in the World is a century old idea to have the positive end nipple tipped. But Vapor Flask should at least, have installed a diode that would allow the current flow in only one direction between two batteries. IMHO
I don't think people under stand it's reverse polarity protection not battery... If you put in the batteries one up or one down then you cause a direct short almost as it you connected the positive and negative terminal together with a wire... It's not an error with the board but user error/stupidity
80% of the mods out there have only one battery that's why so many refer it as reverse battery. also there is no room in the VF to put a diode ... That's why u need to pay attention when putting in batteries
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The diode trick works and so does using a diode bridge then you can plug the batteries in any direction and the unit will still work. The problem here is we are trying to get all the voltage and current that the battery can provide. adding a single diode drops the voltage supplied by one bat by 0.7 volts and the bridge circuit drops the total voltage by 1.4 volts.
Anyway your board may still be OK just dead-ish batteries.
With a diode having a 0.7 volt drop if you are drawing 20amps you dissipate 14 watts in the diode while firing. This would require a large, heat sunk diode. It would also greatly decrease battery life. They could have installed some fuses. They would work much better. Mamu has some excellent suggestions on installing them in parallel mods. They could have required using nipple top batteries but then people would complain that they couldn't use their VTC5s. Folks complain lots about that with the provari and other mods that require nipple tops. Really, resettable, self healing fuses are the best way but they do increase the complexity of the mod and give another possible failure mode. Avoiding putting batteries in backwards is really the best solution. It is hard to prevent thermal runaway when batteries are connected + to -. You could only buy DNA40s with single batteries so the reverse protection will prevent problems. Or an XPV without easily user replaceable batteries.
Guys and Girls,
I want to make you aware of my Vapor Flask V2.5 DNA40 fiasco.
I made a rookie mistake by placing one of the batteries in - upside down (Woops)
Doesn't it suppose to have reverse battery protection?
It fried! A lot of SMOKE came out of it, one of the VTC4 batteries started to vent and the unit is now DEAD
Based on that experience, I can say: Vapor Flask V2.5 Does NOT have Reverse Battery Protection
It's going back to Vapor Flask for RMA. But it was having some intermittent screen issues any way.
AMD,
I would consider myself lucky to find out there is no protection from battery failure... Have you notice the shadows on the two screws at the top of your unit. I would return it just because they are not properly counter-sinked. It would really drive me nutz.
Also I read an article about the guy that did the machine work on the flask and he was so prod of how the battery screw plug slots line up. I remember thinking it he paid that much attention to detail the rest of the flask must be a master piece - NOT.
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Lol. The flask is anything but a manufacturing masterpiece. Quite the contrary in fact.
In any case the reverse battery does work. Just tried it on my rDNA. Like what's been mentioned, it's only because the 2 batteries were put in diff directions for a dual mod.
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In any case the reverse battery does work. Just tried it on my rDNA. Like what's been mentioned, it's only because the 2 batteries were put in diff directions for a dual mod.
Burping out loud using Tapatalk
drmarble,
The 0.7 volt drop doesn't work that way. It is more of a forward conduction threshold that subtracts from the applied voltage i.e. 4.2 - 0.7 = 3.5 volts supplied from the battery. The only thing that dissipates heat in the forward direction it the conducting resistance of the diode which is generally pretty low. I am being too lazy to look it up right now but it would not be anywhere near 14 watts with a good quality diode which after you exceed the 0.7 volt threshold would have a resistance in the milli-ohm range.
That said the loss of 0.7 volts from your batter is substantial.
PS - Madvapes sells nipple add-ons to us with flat top batteries.
Boy oh boy - Kiwi, You must have brass Gazongas to give the reverse bat protection a try after all the problems you had with your first VF.
By the way if you put the batteries in one at a time and look at the display before putting in the second battery you should also be OK even with the V.F. Then you are only testing the reverse polarity protection of the DNA40 and not the max current flow between to 35 amp batteries.
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