DNA 200 Watt

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BillW50

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Balancing?
Someone correct me. But from observation, the charging symbol shows and series charges the lipo. Once one cell hits the cutoff (either 4.10v or 4.20v depending on your charging mode), then the charging symbol disappears. Charging current could be showing a little or nothing at all. But it could be balance charging. And it seems to be it doesn't really charge anything. But just drain the high cells down to the lowest cell voltage and then does nothing.

That isn't how most RC balance chargers work. They over charge a bit and drain the high cells and repeat until all cells are right at the cutoff. Although I do like how Evolv does it better. It never overcharges and keeping the voltage a tad lower is always better for the cells.

Being an electronic engineer I would do it this way. Treat each cell individually and charge each one independently. But that means a separate charging circuit for each cell. But it isn't quite that simple. They have to be totally isolated from one another. That is a bit on the pricey side. So I get why RC chargers do what they do and I like how Evolv does it better than they do.
 

Mactavish

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We're talking about the VaporShark DNA200 specifically. It has a different charger (2a vs 1a on stock boards). My other DNA200 mods shows the USB Current fine.

I just checked with my USB current meter and it's not just a display issue. The mod isn't pulling 2a from the power source.

Interesting, I didn't bother with my other USB testers since I know nothing here has changed other then the firmware update. Obviously a NEW BUG!
 

KTMRider

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Interesting, I didn't bother with my other USB testers since I know nothing here has changed other then the firmware update. Obviously a NEW BUG!
Definitely a bug. Rolling back to 2.23.16 firmware doesn't fix it. Same issue but only goes up to 0.77a now. Charging from the computer will give a fairly steady .5a though so I don't think there's physical damage.

I have not updated my VS200 yet & now that I'm hearing this I will not rush to do so.
Don't do it. I upgraded all my DNA75 and DNA200 mods last night. The VS DNA200 is the only one showing this behavior. The only difference is the VS has 2a charging.

Time to head over to Evolv's site to see what's going on.
 
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Mactavish

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If anyone wants to test this new bug. Update Escribe to 1.2. While your DNA200 is connected, update the firmware to 1.2.
Choose to make one of the three on screen settings "WHILE CHARGING", to "USB CURRENT". Make sure to upload your settings to mod.

Plug your mod into a USB charger that can deliver a 2 amp charge, and NOT all USB cables can deliver a 2 amp charge, so you should already know this, mine has and does.

After a minute your DNA200 will display the amps being delivered to the mod.

Now you can intelligently participate in this topic with your results.
 

Spirometry

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Definitely a bug. Rolling back to 2.23.16 firmware doesn't fix it. Same issue but only goes up to 0.77a now. Charging from the computer will give a fairly steady .5a though so I don't think there's physical damage.


Don't do it. I upgraded all my DNA75 and DNA200 mods last night. The VS DNA200 is the only one showing this behavior. The only difference is the VS has 2a charging.

Time to head over to Evolv's site to see what's going on.

I rolled back to 2.23.16 and my 2 amp charging is back.
One observation: don't put watts mode as a material on your device. escribe will demand that you update your firmware.
 
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retird

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James of Evolv is posting on Evolv's forum so he is aware of what you guys are saying... here is a post from him:

"It worked fine on my VS DNA 200, as well as Nick's. No problems charging at all. What are your cell voltages at, and your USB voltage? Of course if your batteries are nearly full, the charge will not be at 2A. ....Hmm. What kind of chargers are you using?"

Seems he is gathering info... and looking at the issue...
 

KTMRider

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James of Evolv is posting on Evolv's forum so he is aware of what you guys are saying... here is a post from him:

"It worked fine on my VS DNA 200, as well as Nick's. No problems charging at all. What are your cell voltages at, and your USB voltage? Of course if your batteries are nearly full, the charge will not be at 2A. ....Hmm. What kind of chargers are you using?"

Seems he is gathering info... and looking at the issue...
I replied...

I'm using a PowerBot PB5000 with Anker USB cables tested to work at 2a. The 700ma charger was an old LG phone charger.

When I started, my battery was around 89% (950-ish Wh). I fully charged it via computer USB (3.0 port but only put out .5a) When the battery is full, the USB Current value is steady at a lower current (ie. 0.2a) and doesn't ramp up like it did. I will vape it for a while and check again.
 
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retird

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THX KTM.... I can't say what is going on with the VS but it sounds close to what I ran into on my reference DNA200. The charging didn't seem right and was seeing lower rates. After discussion I learned that my default Charge Mode changed to Maximum Recharges which charge the battery to a lower voltage. The battery was almost completely charged at this point. I changed the Mode back to Maximum Puffs and after the battery discharged a bit from vaping the charge circuit worked normally and the charge rate fell off as battery got close to full. This may not be helpful but is just info.
 

Mactavish

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Sounds like it would be much more of a demonstration of intelligence not to perform the update at all and avoid the conversation. Hope you find a speedy resolution and all works out!

How would one know not to perform the update, unless someone did and found a "bug". Your WELCOME!
 
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Spirometry

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Another observation with the Vaporshark
Don't have a VS200 but is the Charge Mode still set to maximum puffs and does it make any difference if it is set to maximum recharges? Anybody able to post a Device Monitor screenshot of what you are seeing?

Not going to be able to get a screen shot because it works fine at 0.5 amps. Its when you plug into a 2amp power source that causes the problem.
 

AtmizrOpin

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THX KTM.... I can't say what is going on with the VS but it sounds close to what I ran into on my reference DNA200. The charging didn't seem right and was seeing lower rates. After discussion I learned that my default Charge Mode changed to Maximum Recharges which charge the battery to a lower voltage. The battery was almost completely charged at this point. I changed the Mode back to Maximum Puffs and after the battery discharged a bit from vaping the charge circuit worked normally and the charge rate fell off as battery got close to full. This may not be helpful but is just info.
good thinking retird, that could be happening. cause if the battery is really close to 4.10 and the update accidentally switched your setting from max puffs to recharges, it makes sense that the board's charger is going to be in constant voltage mode rather than constant current mode if your batt is close to it's max charging voltage of 4.10v. that's if you have "max recharges" selected.
 
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BillW50

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How would one know not to perform the update, unless someone did and found a "bug". Your WELCOME!
Thank you very much, seriously! I don't recall if you are younger or older, but when I was young I was the first to do updates and buy all of the brand new products. Although now I am much older and I don't want to be the guinea pig anymore. So now I wait and see what happens first.
 

Mactavish

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good thinking retird, that could be happening. cause if the battery is really close to 4.10 and the update accidentally switched your setting from max puffs to recharges, it makes sense that the board's charger is going to be in constant voltage mode rather than constant current mode if your batt is close to it's max charging voltage of 4.10v. that's if you have "max recharges" selected.

My settings did not change, still MAX PUFFS, mod is at 74% charge. Mod always showed AMPS being delivered until right near the end of charge cycle.

I know we like to think that problems are USER caused, because most times it is. The ONLY thing new here is the update. For those that don't want to do the update, I understand, but guessing on something you are not experiencing is just that, guessing. I'm on the Evolv board and just responded to James, so I'll continue this there.
 

Wingsfan0310

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Thank you very much, seriously! I don't recall if you are younger or older, but when I was young I was the first to do updates and buy all of the brand new products. Although now I am much older and I don't want to be the guinea pig anymore. So now I wait and see what happens first.
I only updated one of my VT133's to see how the update is. I figured I could always roll it back. Worst case scenario, if the update bricks it, Evolv will fix it. Plus I think I may just have a spare VT133 :D. So far I'm not having any issues and SS TC has smoothed out considerably with 316L. Someone has to test them ;)

Cheers,
Steve
 
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