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Old Dec 16, 2009, 06:15 AM
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Joined Dec 2009
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The conection breakdown issue is solwed, my charger is now working
There is stil a current missreading, but i think Junsi is going to fix that in the
next firmware.
I can not post the firmware becose you need a coresponding lid code to the cid code, witch i reciwed from Junsi.
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Old Dec 16, 2009, 08:19 AM
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Quote:
Originally Posted by GeorgeC View Post
Thank you for your response Junsi. Do you know if the Connection Breakdown is firmware or hardware related? Because if it is firmware, we would have expected 3.12 to fix this. If it is likely to be hardware, consumers need to know so they don't waste time installing firmware updates. I hope you are able to resolve this quickly.

Your users support you because we want you to get this right and deliver the best value charger on the market but it must be bug free.

George
Well said.
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Old Dec 16, 2009, 08:28 AM
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I received my new iCharger 206B two days ago. I upgraded it to firmware v3.12, as I needed to do more than 30 cycles unattended. I connected a 26650 A123 chinese clone cell to it and set it to do 30 charge/discharge cycles. The problem is that it did not stop after 30 cycles and continued cycling it.. But charge/discharge results on LCD ended at 30th cycle.

Waiting for new firmware..
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Last edited by circuit; Dec 16, 2009 at 09:10 AM.
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Old Dec 16, 2009, 09:00 AM
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doublepost.. sorry.
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Old Dec 16, 2009, 12:19 PM
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am I correct understanding this ...
tehnical data - current drain for balancing <300mA (106+)
so when first cell reach CV the remaining max charging current is max and/or less 300mA
example:
balance charging 2 cell Liion (max.vol. set to 4,1V/cell)
charging current 1A
first cell hit 4,1V (the other one is still around 4,0V)
why do I have only 0,08A charging current at this moment(in the moment is just 0,06A it just jump around this values)
so if they claim current drain is 300mA why don't charger keep for example 0,3A or just say at least 0,2A in balance mode until other cell reach 4,1.

try this very pack in the orbit charger at the same time, they charge at 0,6A
it's 10x bigger current as it is in icharger ?!?!

third thing
in storage for example, when battery reach 3,85 V it just dancing around from 3,81 to 3,85 V and current jump from one to other value
the very same pack (1s3p) in orbit it is constant 3,85 and current reduce as it does, when finished in orbit and tested with DVM the pack is 3,85
in icharger is 3,81 when it was finished (icharger is calibrated as it should be)

i think that we should go from fw 3.12 to 4.0 and completely renew the algoritem of icharger.

reagrds, Simon
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Old Dec 16, 2009, 03:00 PM
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in charge the milliamper is wrong
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Old Dec 16, 2009, 03:55 PM
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Hungary, Budapest
Joined Sep 2009
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Hi!

I've an iCharger 208b (fw. 3.12) and I want to use the DCHG+ function.
I've got 3 pcs. 3R3/100W resistor and 4s/2200mAh lipo. According to the "iCharger Expanded Discharge Tool", if I connect those resistors paralell, I can set the discharge current to 13,3A-13,9A.

I connect the dummy load to the + side as it mentioned in the manual.
Set the current to 13,5A and start the discharge.
With a fully charged 4s battery the current rise up slowly to 10A and after few seconds the current slowly fall back to 2,2A (internal 30W discharge power) and stay in this level.
I checked the currents with a clamp meter, and the currents the same what the iCharger shows.

What could be the problem? Why fall back the current to 2,2A?

Thanks
Attila
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Old Dec 16, 2009, 03:57 PM
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Quote:
Originally Posted by galaxy1 View Post
in charge the milliamper is wrong
Is it wrong? Or just different?

Mark
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Old Dec 16, 2009, 04:14 PM
E-Revo BLDC driver
Czech republic
Joined Oct 2009
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Quote:
Originally Posted by laposelemer View Post
Set the current to 13,5A and start the discharge.
With a fully charged 4s battery the current rise up slowly to 10A and after few seconds the current slowly fall back to 2,2A (internal 30W discharge power) and stay in this level.
I checked the currents with a clamp meter, and the currents the same what the iCharger shows.

What could be the problem? Why fall back the current to 2,2A?

Thanks
Attila
I have the same problem. I do not mind, I use current load of its own production.
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Old Dec 16, 2009, 05:43 PM
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USA, KS
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Slightly OT

What is a good clamp meter for checking charge amperage/watts ?
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Old Dec 16, 2009, 06:01 PM
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Perth, Tasmania, Australia
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Quote:
Originally Posted by rkkennard View Post
What is a good clamp meter for checking charge amperage/watts ?
I use a Lutron CM-9940. It has multimeter functionality too so it's versatile

http://www.lutron.com.tw/ugC_Showroo...e=&txtSrhData=

George
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Old Dec 16, 2009, 07:05 PM
E-Revo BLDC driver
Czech republic
Joined Oct 2009
14 Posts
I use HP34401A multimeter with shunt 60mV/30A/120A. Accuracy of shunt is 0.5%.

External discharge is not working, current ramp up after start to set value. a few seconds ramp slow down at 2A(30W)

My external resistor is wounded from resistive wire and has precise value from table here.
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Old Dec 16, 2009, 09:48 PM
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Quote:
Originally Posted by jdr43 View Post
My conclusion is that there's a bug in the V3.12 firmware for the 208B which is leading to the main voltage being displayed too high (individual cell voltages are displayed accurately) and this is leading to the charge terminating early

It's not just the 208B the same thing is happening on my 106B+
Hello Sir,

Actually, this is another revision in V3.12. In the past, for example, Vo=4.2v*nS +0.2V, here 0.2V is line loss. However, if the current is large, 0.2V is not enough.

So we have changed it to Vo=4.2v*nS+ 0.2V+ 0.2* I/10A. That means if current is 20A, Vo will be 0.4V more than the previous. This is helpful for full charging in a short time.

Regards,
Junsi
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Old Dec 16, 2009, 09:52 PM
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Quote:
Originally Posted by circuit View Post
I received my new iCharger 206B two days ago. I upgraded it to firmware v3.12, as I needed to do more than 30 cycles unattended. I connected a 26650 A123 chinese clone cell to it and set it to do 30 charge/discharge cycles. The problem is that it did not stop after 30 cycles and continued cycling it.. But charge/discharge results on LCD ended at 30th cycle.

Waiting for new firmware..
Hello Sir,

Thank you for your feedback.

Our engineer will check the software soon.

Regards,
Junsi
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Old Dec 16, 2009, 09:52 PM
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What does this mean in plain language?
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