dwcraig1

Example:

Escribe will show what the voltage of the cells are under load. It sounds as if the board is not getting good power. Might be the batteries, might be bad connection(ect.) of battery contacts to battery. Might be bad solder joint somewhere between batteries and board.

The curve only makes the battery gauge more accurate, it doesn't change battery performance

Have you tried logging off then back on?

Where you bought it if new, Lost Vape service center or a ticket with Evolv. 4.2 volts is full charge for most Li-on cells, there are some that are 4.35 volts.

See that cell #2 reading 5.05 volts, the board is the problem.

Bridge ground to B -, bridge 3 to B + to eliminate using wires. That leaves 1 & 2. Starting from left 3 (red),2,1, gnd.

Maybe uninstall and re-install Escribe, might try a different cable too.

LOL, comes out the same.

Well SP5 is fine but for the 75 it is the same firmware. So your good there.

Escribe/tools /apply service pack. Steer it to the latest date of DNA75. Start with Escribe 1.2 SP3

Did you re-flash the firmware by chance also? You might give that a try, can't hurt.

The curve can probably be found on this forum. I calculate 12.5% less than stated mah for 18650's ( on a 200 board) Keep in mind that only the "fuel gauge" is effected not battery performance with the csv

It depends on the speed that they are going South, a little is normal.

Agree. As cells age capacity drops, abused drops even more.

If it were mine I'd lower the watt hours by 15 - 20% and see how that goes, battery performance won't be affected.

If it's the same hardware cutoff as the 200 it won't make much difference if set below 28.5 volts. I don't know what the hardware cutoff for the 250 is though.

The replacement batteries are said to be better than the originals...just what I read, no experience with them.

You need to RMA the board, it appears there is a problem with the battery management section of the board. https://helpdesk.evolvapor.com/index.php?a=add&category=1

I would think that you will be asked to send them your bad board and they send you a new one.....that's usually what happens. They're pretty good that way.

Try here: https://helpdesk.evolvapor.com/index.php?a=add&category=1

If you can determine pack is present at B+ and B- using a meter then you need to check for pack voltage between B- and the upper (towards center) end of the fuse. Keep in mind that the board is coated so it may be difficult to make a connection at the fuse. Or without battery connected check for continuity between B+ and upper end of fuse.

Have you tried using a different USB cable?

Gee, maybe open a ticket with Evolv and link to your posts in this thread. https://helpdesk.evolvapor.com/index.php?a=add&category=1

Sounds hopeful then