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Other › Align charger problem with Align battery and T Rex​600?
09-15-2007 07:00 PM  10 years agoPost 1
Egor_1066

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Devon - UK

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Using a totally standard Align setup (T Rex 600, 600L motor, 75Amp ESC, Align 4200mAh battery) I have noticed a problem which occurs intermittently when attempting to charge the batteries.

If the model is run until the low-power warning on the Align ESC gives its warning indication (set to highest level), the charger sometimes detects the battery as a 5-cell not as a 6-cell.

If the charger is set to AUTO detect on the voltage, it attempts to charge as a 5-cell, hits maximum charge level, detects that the voltage is already at the 5-cell maximum and immediately shuts down.

If the charger is set to 22.2V, the error “Vol select Err” is reported and the charger will not charge.

A Graupner charger will succesfully charge the battery (when told that it's 6-cell not 5!) and at the club we have discovered a work-around that I'm not prepared to divulge in public....however...

I believe that it is likely that this problem is caused by the voltage detection threshold being set slightly too high (not in line with the other Align products) – has anyone got a way to reset this level or manually “force” the charger to give a charge – or is this a batch problem with the charger (I have seen the identical error on another similar setup).

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09-15-2007 07:12 PM  10 years agoPost 2
dazzaster

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right next door to​hell

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is this with the balancer conected at the same time?

A.K.A 509

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09-15-2007 07:13 PM  10 years agoPost 3
Egor_1066

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Devon - UK

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The same problem occurs both with AND without the balancer. This is why I believe this to be a software issue within the charger firmware.

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09-15-2007 07:45 PM  10 years agoPost 4
docjoe

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Stockton, CA United​States

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I think the important thing is that you are discharging your batteries too much. If you're discharging it to a low enough voltage, certain chargers will not recognize it as a 6s battery, as you've been seeing. I recommend you time your flights and just land the heli when it comes down. Start at 5 minutes and then recharge. See how much amps your putting back into the battery and make sure you're not putting in more than 80% of the capacity, ie if you have a 5000mAH battery, don't discharge it over 4000. on a 5000, i'll be extra cautious and have my timer set so that I put back about 3600-3800.

How much you put in depends on your flying style. The more sedate your flying style, the longer you'll probably be able to fly to 80%.

Joe
We haven't seen Colonel Angus around these parts for years!

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09-15-2007 07:51 PM  10 years agoPost 5
Egor_1066

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Devon - UK

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I agree that (according to the charger) I am possibly discherging the battery too far, and also that the best way to get over the problem might be to use timers to set discharge level. What that doesn't address, however, is the fact that the Align setup in the ESC is supposed to give an advance warning of low charge (ie before it gets to the point where the battery is over-discharged. Relying on this warning SHOULD therefore still allow the charger to cope, which it doesn't appear to be doing.

My flying style consists mainly of trying to land in one piece - unlike last week.....

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09-15-2007 08:04 PM  10 years agoPost 6
docjoe

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Stockton, CA United​States

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You shouldn't rely on the ESC. It's best to do as I instructed timing your flights. It's really the only way, unless you get a lipo monitor. It's easier just to time it. I'd recommend not flying it to the point where the ESC starts to cut out. That's not good.

Joe
We haven't seen Colonel Angus around these parts for years!

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09-16-2007 02:54 PM  10 years agoPost 7
TURBINE MASTER

rrApprentice

SW ENGLAND

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Align "Intelligent" charger

Hi egor 1066
Tried another align charger today (darren's) still no joy, we even took the six cell pack down to only 3.2 volt per cell but still the align charger would not recognise the pack as a six cell.
Went back to my tried, tested and intelligent graupner duo 30 and it worked fine
( Sorry pat.darren,Alistair )
Let us know how you get on with the e mail to align
Turbine Master

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09-16-2007 04:43 PM  10 years agoPost 8
dazzaster

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right next door to​hell

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ive emailed the place where i got mine from for info on how to return it. not sure if it has anything to do with it but aparently it has a 3.3v cut off when to prevent over dischargeing!!!
Darren

A.K.A 509

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09-16-2007 08:21 PM  10 years agoPost 9
ba board

rrVeteran

England

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This is obviously a software fault then? Any thoughts on the Graupner charger as an alternative.

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09-16-2007 08:29 PM  10 years agoPost 10
dazzaster

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right next door to​hell

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ive just had a reply from where i got mine from.
they say The voltage is sensitive on this charger which is overall a good thing, the pack is certainly a little low voltage (which it isnt), charge it as a Nicad pack just for a couple of mins while closely watching it and once voltage is ok switch to Li-Poly setting and everything is fine.
my reply to this was basicly yes we have tried a short charge as a nicad to boost the voltage up so the charger recongnises the pack as a 6 cell but we shouldnt have to do it ,as its an automatic charger if you where supposed to do this it would tell you in the instructions
Darren

A.K.A 509

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09-16-2007 08:30 PM  10 years agoPost 11
dazzaster

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right next door to​hell

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p.s i have requested an exchange for the graupner automat 30 or a refund as i know the graupner one works.

A.K.A 509

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09-16-2007 10:30 PM  10 years agoPost 12
ba board

rrVeteran

England

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If you charge a lipo as a nicad(irrespective as to how long) doesn't that invalidate any warranty should a fault develop with the pack. I would have thought that with the alleged problems perceived with the charging of lipos that any deviation from the instructions might cause some problems.

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09-18-2007 11:57 AM  10 years agoPost 13
dazzaster

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right next door to​hell

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acording to the place where i got mine they said you shouldnt be dishargeing it bellow 3.3v per cell, i told them that its ok to pull them down too 3.0 . they said fine send it back and we will test it,
and they will prove it charges a 6 cell i said of course it will charge 6 cells if the cells are on or above 3.3v they said well i shouldnt pull them below that. i explained that the align speed controller is set at its safest setting.
basicly i can send it to them for testing but there saying its not faulty as it works to its specs so there going to say its ok anyway and im wasteing my time
or i can send it to them and they will give me a part refund based on it condition, (which is brand new)or partrefund me.
every time i mentioned it would not charge six cells hey said i didnt have six cells to charge. i explained more than a few times that we had tried 3 pack on it none of which would charge
neddless to say im not sending it back as i wasnt happy with the tone of voice on the phone and the fact they werent intrested in what i was saying or beng helpfull. i know if i bought this from my local retailer he would have taken it back without a problem.
so i wont be useing this well known mail order company again.
darren

A.K.A 509

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09-18-2007 06:24 PM  10 years agoPost 14
Egor_1066

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Devon - UK

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Just a quick update to say that as yet no reply from Align at all. So no further on.

A.

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