awsum140a

You also need to set the number of cells, using eScribe, in the configuration for the mod and save that to the mod.

AlpineTech is another reliable source.

Try disconnecting/removing the batteries and leave it completely unpowered overnight. I had a similar problem with a 100C and doing that cured it. As with everything YMMV.

I want to share this in the hope that it will help someone else. I have two DNA100C's and one got knocked off an end table. It took a hit to the screen that resulted in a black blob in the center of the screen making it impossible to read what was going on. I have replacement color screens, so time for a replacement. Took it apart, de-soldering the negative battery lead first, then positive battery lead and then the 510 lead. Removed the board, cleaned up the pads and installed a new screen. I put it back together in the reverse order, 510 lead, positive lead, negative lead. Pressed the fire button, once, and the screen lit right up. Reassembled the case. Unfortunately when I went to unlock it it wouldn't unlock. All I got was five orange dots on the bottom of the screen. Now what? I posted the problem on another forum and BillW50 suggested disconnecting the battery for a half hour. I also opened a ticket with Evolv and got an response the same day. Evolv asked about shorts from soldering, but there were none, so I de-soldered the negative lead again and let it sit overnight to be sure. The objective being to clear any memory that might be maintained by a small capacitor. The next morning I soldered the negative lead back on and immediately tested for unlock functionality. Success! My DNA100C was working again! Two take aways - 1 - Black blobs on the screen can happen from random impact and are not necessarily liquid or screen problem related.. 2 - Leaving the board unpowered will clear any memory, corrupted or otherwise. Hope this helps someone else cure a problem like this.

I have two 250Cs mounted in N1 cases with 4S/2200mah batteries and have been charging them with USB from day one. Day one was June 6, 2018 when the 250C was only out for about a month. Excellent battery life by the way, say ~30ML of liquid running at ~30 watts/400F.