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Using only 2 balance wires is not that bad, IIRC Evolv recommend keeping them the same length, but they form the same circuit and provide the same inputs to the board so it is no biggie. I only posted to give a possible explanation of how it could be wired with 2 thin and one thick wire. The pics are all consistent with my picture and the board does have a ground screw.

So it is just using the center 2 taps, thanks dwcraig I had just ladled the picture to try and help jaquith, did you measure the thicker wire conductor diameter?

They are not "negative" Jaquith, well the lowest one is, but the other taps are at the voltages between the cells so the outside 2 are the same voltage as the main battery leads. So for a balanced 3S @ 12 V they would be: 0 V, 4 V, 8 V & 12 V and each adjacent pair would be 4 V the cell voltage. Edit I just noticed the numbers you added, but they are still not negative except the lowest one, or maybe you mean the negative terminal on the cell again these points also contact the positive of the lower cell in the series.

draw me up a diagram kid. im pickin up what yer layin down, but a diagram would make my night. thanks.[/QUOTE] Not very good, just lashed up in M$paint This is not a recommendation, but it could be how the Reueaux is wired, just saying don't shot the messenger.[/QUOTE] In your 'drawing' you'd take the 3rd negative off your 'ground.' [/QUOTE] I don't follow there are only 2 negatives the negative pad which is shown grounded and the negative balance connection shown connected to the negative pad. No extra wiring needed to complete the circuits all 4 balance connections are connected.

draw me up a diagram kid. im pickin up what yer layin down, but a diagram would make my night. thanks.[/QUOTE] Not very good, just lashed up in M$paint This is not a recommendation, but it could be how the Reueaux is wired, just saying don't shot the messenger.

Escribe takes the settings from the device, so no mater how many you plug in Escribe will not mix them up. You can load settings, profiles, themes etc from a file after you attach the device then save them to the device if you want to copy from one device to another, just be carfull not to copy the mod settings (res, thermals & battery).

It only needs 2 balance wires, 4 is better but if they take 0 & 3 from the battery pads, need better photos, but you would expect to see a thin wire from each battery pad to the nearest balance pad and the 2 centre balance pads connected to the battery cradle. I suspect that is what they have done plus taking the negative from the cradle to one of the screw points and common grounding to the chassis, but it is all conjecture from the photos.

As Flavoured pointed out on ECF the negative should be from the other end of the battery pack, maybe they are using the chassis.

If you look carefully the b- wire is not the same as the b+.. They're using the same wire for b- as they are for balancing..[/QUOTE] I thought that they had disconnected the main -ve wire, but as you say the pics on photobucket show some skinnier wire for the -ve while the battery tray is being removed.

A feature I think, so charging does not skew the data plots and it has always been there.

Has anyone measured them? The min spec is PVC 18 AWG 1.29 mm diam conductor Silicone 20 AWG 1.02 mm diam conductor

Good to see you m8, I was gutted when you left AAE-C hope you are keeping well.

I agree the cable does matter also some USB sockets are very sensitive to how far the cable is inserted, I always have USB current as one of the charging display fields so I can see if I am not getting >0.99 A.

Could part of that just be that LiPos have no charge left below 3 V? Did you run battery analyser to determin they were not going below 3V? I have not done the tests, but would expect some 18650s and maybe LiFePos (not sure not used them) to go down that far. Maybe they did change the 2.85 V. When the feature request was made for 2S it was implemented very quickly and I really can't see that there would have been separate algorithms for the cell limits. It would not be the way they would do things, they don't have a different mode for temp sensing and non-temp sensing and 2S vs 3S would make far less sense. I am not saying you are not seeing different results, just that I don't think it is firmware causing it, I suppose there could be some different default limits loaded but doubt it. The battery meter can only be so accurate anyway as they are chemical devices that degrade over time and are affected by temperature and even dirty or corded contacts.

I think I understand you now, if I read you right (I'm dyslexic so can misread all to easily) you mean something along the lines of more hidden advances options that casual users would not be tempted to alter and all mod makers getting it right before shipping? (I originally thought you suggested they were wrong not to put 18650 as a battery choice)

You do like to argue don't you jaquith, I am not Evolv and have no connection with them. If you bother to look at the link I posted you will see that Evolv have stated the hard cut-off is 2.85 V and I have not said anywhere that it is 3.1 V as far as I can recall. Yes the default battery curve is dead on for a Fullymax as it is a representative LiPo curve so a ideal default setting and can see no reason to complain about that. LiPos are the battery this is designed for, the most common and are far more similar than 18650s.

Let me try and reassure you a bit, the important setting from a safety point of view is the battery type, this should always be LiPo unless you know you have a LiFePo and I don't think anyone is selling mode with these in. If you choose LiFePo when it was another Lithium battery I think that it would only result in under-charging it and can't see any safety implications there, but am no expert. The opposite would be bad, but LiFePos are lot less violent than normal Li batteries if the go bad, but as I said I don't think anyone is shipping DNA200 with LifePos fitted. Essentially LiPos & 18650s are treated the same way & LiFePo operate a lower voltages. The power supply setting should not be used with batteries unless you do it at your own risk as it prevents most of the battery monitoring. I am not sure of the implications of choosing the wrong number of cells, but that setting would mainly be to turn off battery monitoring for the non-existent cell in a 2 cell set up, but I think it is very unlikely this would be set wrong. The battery capacity and curve are ther to make the battery bar more accurate and do not affect any of the battery safety features, so getting this wrong is only a usability issue IMO. I could be wrong on the small details, but I am pretty sure that what I have just typed is essentially correct. You have probably the best board in the business for battery monitoring and safety.

It is a pity that this is concerning users when it shouldn't be, maybe it is because a few manufactures didn't set the capacity that people are worried some may incorrectly set the battery chemistry and cell count, I think that is extremely unlikely to happen and have not read that it has so far.

I don't understand why the text in red on your reply Jaquith, I did not comment on that at all and was not arguing with you. You are wrong about the curve being specific to the Fullymax and the curve having anything at all to do with a finite capacity either in Wh or mAh or the cut-off they are separate settings. IIRC they translate the default curve from the fullymax to the capacity entered in Escribe because it is representative of 3S LiPos the class of battery the board was developed to use. It is just a default curve, you can use the analyser to creat one that is more accurate for your batteries and mod makers should all be doing this. As I posted they do support lower than 3 V cut-off , the last time I saw Evolv post it it was 2.85 v and I even posted the link for you. You may have a point about a lower hard cut-off benefiting some 18650 users, but I don't think Evolv will change it because of possible problems if used incorrectly, they rejected supporting 4.3 V max LiPo charge for that reason and I think they were right to do so.

The default is just for a typical LiPo not for the Fullymax and I don't think there is any point setting the soft cut-off to 2.5 V when the hard cut-off is 2.85 V, unless it's changed since July /topic/67884-topic/?do=findComment&comment=911120 I would probably set it low for most IMR 18650s and can't understand where these cut off values over 3.1 V are coming from, unless there know there is a problem with a particular battery that some reseller has used and introduced it. But I would run the analyser to see the curve before making my mind up.

What 2 cell or 3 cell, is it really that hard? The only change I can possibly see to fit in with this is to change the text LiPo to Li-Ion to broaden the scope or maybe some explanatory text. Sorry if that comes over a bit unsympathetic, I do not mean to be so and understand that maybe some people get anxious about it, but it defaults to the settings for 3 18650s, changing to 2 is just changing the cell count and that's it. Either people need to change this because the mod maker has not set it correctly, which would be a problem or they made the mod themselves and then they should understand the settings, they are not there to play with.

It is not needed, they use all the same settings as 3 cell LiPo.

Return it for repair.

There are still boards about just not separate screens, in Ireland and the UK http://www.bargainvapour.com/p1274299_14306612.aspx http://www.cremedevape.com/epages/yxve46fvrnud.sf/en_GB/?ObjectPath=/Shops/yxve46fvrnud/Products/EVOLV-09