Spector NS5 RD Posted September 15, 2016 Report Share Posted September 15, 2016 mfj said:It's definitely not the power supply. I've tried several. definiely contact evolv. this is the same behavior the VS dna 200's were displaying with the first SP1 update. they had to tweak the FW for a fix. open a ticket and see what they say then report back. to rule out anything on your end, make sure the usb cable you are using is capable of carrying the 2 amps the 250 is requiring for the charge. make sure the wall wart is 2.1 amps or above.you can open a help ticket here........https://helpdesk.evolvapor.com/index.php?a=add Link to comment Share on other sites More sharing options...
antyac2108 Posted September 16, 2016 Report Share Posted September 16, 2016 I asked about that when i first built my DNA250 and i was told by evolv thisHi Anthony,The behavior with temp control should be accurate, however we will look into it on our end.The charging resetting and ramping back is a known firmware/software issue we are working to resolve at the moment.Thanks,Nick CoutrisEvolv, Inc Link to comment Share on other sites More sharing options...
antyac2108 Posted September 16, 2016 Report Share Posted September 16, 2016 The temp control is working fine it was my coils causing the delay. I had a loose connection Link to comment Share on other sites More sharing options...
mfj Posted September 16, 2016 Report Share Posted September 16, 2016 antyac2108 said:I asked about that when i first built my DNA250 and i was told by evolv thisHi Anthony,The behavior with temp control should be accurate, however we will look into it on our end.The charging resetting and ramping back is a known firmware/software issue we are working to resolve at the moment.Thanks,Nick CoutrisEvolv, Inc Thank you! That is very helpful! Just waiting patiently for the fix lol Link to comment Share on other sites More sharing options...
antyac2108 Posted September 16, 2016 Report Share Posted September 16, 2016 No problem I thought I did something wrong when I built it so I went directly to evolv about it Link to comment Share on other sites More sharing options...
retird Posted September 16, 2016 Report Share Posted September 16, 2016 mfj said: Thank you! That is very helpful! Just waiting patiently for the fix lol Curious.... could you post screenshots from Device Monitor of it (while charging). Link to comment Share on other sites More sharing options...
antyac2108 Posted September 16, 2016 Report Share Posted September 16, 2016 I might be able to do something like that this weekend but I'm at work right now I don't have the time sorry Link to comment Share on other sites More sharing options...
antyac2108 Posted September 16, 2016 Report Share Posted September 16, 2016 Also how would I do that when the computer doesn't charge at 2 amps Link to comment Share on other sites More sharing options...
retird Posted September 16, 2016 Report Share Posted September 16, 2016 Good point.... my bad..... but would still like a screen shot while charging from computer....will edit my previous post.... thx Link to comment Share on other sites More sharing options...
antyac2108 Posted September 16, 2016 Report Share Posted September 16, 2016 Lol no problem I'll post asap Link to comment Share on other sites More sharing options...
retird Posted September 16, 2016 Report Share Posted September 16, 2016 antyac2108 said:Lol no problem I'll post asapLOL.... now I have my first cup of coffee... LOLDoing a quick search for amperage rating of usb cables..... looks like the lay person's answer is that "most USB cables should be able to handle 2.1 Amps".Ran across this comment made about the subject (I have no idea if this statement is valid but here it is):Data cables that allow the device to sync to the computer and transfer files also cause slow charging speed. if you get a cable that's wired just to charge, it will solve this problem. Link to comment Share on other sites More sharing options...
Spector NS5 RD Posted September 16, 2016 Report Share Posted September 16, 2016 retird said:LOL.... now I have my first cup of coffee... LOLDoing a quick search for amperage rating of usb cables..... looks like the lay person's answer is that "most USB cables should be able to handle 2.1 Amps".Ran across this comment made about the subject (I have no idea if this statement is valid but here it is):Data cables that allow the device to sync to the computer and transfer files also cause slow charging speed. if you get a cable that's wired just to charge, it will solve this problem. here's what i use, STRICTLY for charging......https://www.amazon.com/PortaPow-Specialised-Blackberry-Transformer-Charging/dp/B00RL68RNS/ref=pd_sim_107_1?ie=UTF8&psc=1&refRID=5ST2VMHAYCW9DJSG0E7Vi have four of the 3'.3" ones. they work very well and 2 are about 1 year old and the micro usb end portions of them are holding up nicely, still a nice snug fit. Link to comment Share on other sites More sharing options...
retird Posted September 17, 2016 Report Share Posted September 17, 2016 Nice charge cable.... 20 guage wire..... gonna grab a few.... thx for the first hand user experience.... Link to comment Share on other sites More sharing options...
dwcraig1 Posted September 17, 2016 Report Share Posted September 17, 2016 Here also, depending on shipping charges they may be a bit less than Amazon.http://www.ebay.com/itm/PortaPow-Specialised-3-3ft-20AWG-Charge-Only-Micro-USB-Cable-2-Pack-New-/282068762006?hash=item41ac9bbd96:g~oAAOSwepJXYQK7 Link to comment Share on other sites More sharing options...
retird Posted September 17, 2016 Report Share Posted September 17, 2016 dwcraig1 said:Here also, depending on shipping charges they may be a bit less than Amazon.http://www.ebay.com/itm/PortaPow-Specialised-3-3ft-20AWG-Charge-Only-Micro-USB-Cable-2-Pack-New-/282068762006?hash=item41ac9bbd96:g~oAAOSwepJXYQK7THX for that.... I love PayPal and free shipping...... off to ebay I go...... 2 for 15 bucks ain't bad.... Link to comment Share on other sites More sharing options...
Synoptex Posted September 19, 2016 Report Share Posted September 19, 2016 Good day, gentleman. Could you please clarify to me what does the new feature "Onboard reverse voltage protection" means? Does that mean that if I place my 18650 batteries upside down my fuse will not blow like on DNA200? Like the other cheap "Chinese chips" do, they just do nothing untill I place the batteries in correct way... If that's so, that's a good news combined with 2A charging that will definitely make me switch to DNA 250 board. Link to comment Share on other sites More sharing options...
retird Posted September 19, 2016 Report Share Posted September 19, 2016 I've not seen a 250 (just pictures of it) nor seen much info on it yet..... not much discussion either yet.....From the Data sheet:Fuse Because of the energy and power stored in the battery, the DNA 250 includes an onboard 30 amp SMT fuse. The fuse is located on the underside of the PCB near the B+ battery terminal, and is labelled âFuseâ In normal operation the fuse should never blow. However, in the event of an error or short circuit on the board, the fuse will protect the battery. Should it need to be replaced, the fuse is manufactured by Bel Power Solutions, part number C1H30. If you suspect your fuse is blown, check continuity across the fuse to verify using a Multimeter. Replacement is accomplished by de-soldering the blown fuse from the board and soldering on a new fuse. DNA 250 is designed for battery packs that are permanently installed into the device, or battery packs that install using an insulated, polarized connector rated for at least 30 amps. If the battery pack is installed with the polarity reversed, the fuse will blow to protect the battery pack, board and user. If you are manufacturing a device that is designed to be used with three individual replaceable 18650 cells, the DNA250 now offers reverse polarity protection. Link to comment Share on other sites More sharing options...
Synoptex Posted September 19, 2016 Report Share Posted September 19, 2016 <span>retird</span> said:If the battery pack is installed with the polarity reversed, the fuse will blow to protect the battery pack, board and user. Thank you.But thats what I read from Data Sheet and I hope to presume this as a mistake copy/pasted from DNA 200 Data Sheet. Why there was Nick posting here in firs post about NEW features of DNA 250:Nick said:...with the addition of a few exciting features.-Onboard reverse voltage protectionAs I understand, he tried to point out the NEW features, that were not present in DNA 200 board. Link to comment Share on other sites More sharing options...
Spector NS5 RD Posted September 20, 2016 Report Share Posted September 20, 2016 Synoptex said:Thank you.But thats what I read from Data Sheet and I hope to presume this as a mistake copy/pasted from DNA 200 Data Sheet. Why there was Nick posting here in firs post about NEW features of DNA 250:As I understand, he tried to point out the NEW features, that were not present in DNA 200 board.if you look at the DNA 250 board (back side), you can see the fuse is the first component then followed by the reverse battery protection mosfet. sso if the polarity was reversed the mosfet wouldn't close the circuit which SHOULD protect the fuse from popping. that's how i see it.edit......as for the balance tap connection, i'm not entirely sure what would happen if the polarity was reversed. Link to comment Share on other sites More sharing options...
Seigfried Posted September 23, 2016 Report Share Posted September 23, 2016 250 watts...meh 2 amp charging now I'm interested. Link to comment Share on other sites More sharing options...
Kohjul Posted September 23, 2016 Report Share Posted September 23, 2016 Will the 2A charging damage or lower the battety life cycle? Compare to charging using the external lipo charger? Link to comment Share on other sites More sharing options...
Synoptex Posted September 23, 2016 Report Share Posted September 23, 2016 Kohjul said:Will the 2A charging damage or lower the battety life cycle? Compare to charging using the external lipo charger? Nope. Even 3A charge should be ok for your 3000 mAh batteries. Link to comment Share on other sites More sharing options...
VapingBad Posted September 23, 2016 Report Share Posted September 23, 2016 The single cells will not get 2 A, the 2 A is at USB voltage 5V and will be converted upward, if you think in Watts 2 A x 5 V = 10 W. Then if the batteries are low, say 3.2 V, it charges then in series so 9.6 V, then ignoring efficiency loss and voltage sag on the USB supply 9.6 V / 10 W <= 0.96 A to the cells. I have mostly charges 25R and VTC4s at 2 A and don't think it has shortened their life by much. Link to comment Share on other sites More sharing options...
BobC Posted October 18, 2016 Report Share Posted October 18, 2016 Just got the DNA250, and like all DNAs, first thing I do is put the screen on (no batteries), plug it into the USB, and test display and eScribe connection.The board connects to eScribe fine, but no display.I have a few DNA200s so I swapped the screens, and it works in the 200, but not the 250. I can change the power up and down and it registers on the device monitor, so I think the board is fine Is the DNA250 different then the 75, 200 and 60, requiring batteries to power the screen or do I have a defective board? Link to comment Share on other sites More sharing options...
dwcraig1 Posted October 18, 2016 Report Share Posted October 18, 2016 The DNA250 will not power the screen without battery power as it's siblings does. Link to comment Share on other sites More sharing options...
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