Battery percentage issue

[Dragonlore]

I just got the Lost Vape Paranormal. the issue is that the battey never shows 100%. fresh fully charged batteries (vtc 5, 6, lg hg2, sammy 30Q) that show 4.2 on the charger (D4) only register 98% in mod. 

[Francescorpione]

1 ora fa, Dragoonlore ha scritto:

I just got the Lost Vape Paranormal. the issue is that the battey never shows 100%. fresh fully charged batteries (vtc 5, 6, lg hg2, sammy 30Q) that show 4.2 on the charger (D4) only register 98% in mod. 

Also for my new Therion bf is the same. I charge the battery directly on the box..

[embe71]

Well, then it's just not 100% in reality: 4.2 V is rounded up anyway and there  in most cases there is a certain amount of discharge/not completely charged when charging because you don't hit the perfect spot to stop. I get "99%" from time to time and think it's pretty accurate using a curve for my LGs.

 

Edited September 18, 2017 by embe71

[Dragonlore]

I disagree. The DNA 75c,  is the only thing that has that issue, every other device and even check with a millimeter that is extremely accurate (.1 %) and the batteries are at 4.21-4.23 on all batteries tried. in the mod nothing ever goes above 98%, ever. 

[giz_60]

The % level you see on the device & in Escribe is an estimate & it is calculated using the battery discharge profile (.csv), which is generated by running the 'Battery Analyzer' in Escribe. If you are using the default .csv or a .csv file you acquired from someone else, then the % level will probably be off a bit...

[Dragonlore]

It seems to me that 2 things a device would have to be able to do before a discharge curve would even matter is to accurately read voltage. It also seems that a high end board should be able to do so closer than 2%. Even without running the battery analyzer, the device should know that 4.2 is 100%, and that 2.75 is 0% (default in escribe) everything in between should be the estimated %, and where the discharge curve would be beneficial for the specific battery. Different batteries discharge at different rates but 4.2 is 100% for all of them. Just trying to understand.

 

[giz_60]

I can manually adjust the .csv file to reflect 50% level even though the cells are fully charged. The board uses the .csv file to estimate the % level from 100% on down, not the voltage level...so if the .csv file is not correct for your cells, you will get an inaccurate % level...

[Dragonlore]

I just seems to me it should still be smart enough to know that 4.2 is 100% on it's own without any other input. I understand it gets it's info from a csv file. but if the csv is set to 4.19 as being 100% then  shouldn't it show 100% charge at 4.2? In order for the device to show 100% charge I would have to set the csv to 4.08 to be 100%.  That seems weird to me. I still seems to me a high end board should be more accurate out of the box without all the extra fiddling. I'm only talking about 100%/ full charge. The device reads a fully charged 4.21 battery as 4.11 (shown in sys diag). so even taking the % out of the equation it doesn't seem accurate.

[giz_60]

I own 4 different external charges & a small army of DNA devices...I can take the same battery & get a different voltage/percentage level reading on every charger compared to any of the DNA devices. I can run a cell down to say 10-15%, according to the mod, put it in one charger & get 0% reading...and another maybe 2 or 3%. I personally trust the DNA board myself because of the fact that every external charger gives me a different reading, where as the DNA's are pretty consistent when using the same .csv file on them.

The % on the device is intended to give you an idea of battery level left, but has absolutely no effect on the operation/functionality of the device...until your cell starts running low & hitting the CSC...

[Dragonlore]

leaving % out. I've mainly been interested in it's voltage read. the voltmeter I have is accurate within +/-  .1%. and the battery reads 4.21, the dna board reads as 4.11. so even at -.1% (approx. 4.19) would mean the device has an accuracy of +/-  2 % (approx. 4.11) that seems like a lot to me.  As you said you can set anything manually to be 100% (as well as any point in the curve), but the device still bases that % on the voltage. the curve just says  blank %= blank volts. So even though I can tell it 4.06 volts = 20%, it still needs to be able to accurately read the 4.06v within a reasonable tolerance. I guess I had maybe expected too much?  just seems like a voltage leak somewhere. Thanks for the help giz_60, I appreciate your efforts to calm my busy mind.