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Old Jul 09, 2009, 07:17 AM
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rizky_p's Avatar
Indonesia, Jakarta Capital Region, Djakarta
Joined Apr 2007
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Update: found the answer on page 14 1010/106 manual.

i have the old 106 charger. Does the information from the balance taps is used in discharge function?

thanks.
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Old Jul 09, 2009, 10:34 AM
Southern Pride
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Haralson County GA. USA
Joined Oct 2004
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iCharger 208b efficiency

Next post to fix server error
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Last edited by everydayflyer; Jul 09, 2009 at 10:55 AM. Reason: Deleted dup post that left thread in error had to repost.
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Old Jul 09, 2009, 10:51 AM
Southern Pride
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Haralson County GA. USA
Joined Oct 2004
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i Charger 208B effeciency.

Just returned from field where I used 208B to charge several 3S 3300 LiPolys.

One charge @ 15A in 9 min. 2275 mAh in and charge rate started to taper down. 12:48 Done , 2,539 mAh in. Charge set Balance Storage / Normal Speed.

Another charge with Inspector watt meter checking power to charger.
Same charge settings and same battery( hyperion G3 3S 3300).

PS two 125AH deep cycles in parallel .
No load 12.56 volts
1 min. into charger 12.0 V and 15.9A to charger.
7 min. 11.93V and 17.25 A to charger
12:31 Charge Done
Mininum V under load deep cyles 11.9 , 2,729 mAh pulled from them.
2,521 mAh delivered to 3S LiPoly.
MAx charge rate reached in watts 211.

2,521 / 2729=92.3% effeciency.

Some say that is not correct way to calculate effeciency but in my opion it is as it shows how many Ahs are uses per Ahs delivered to battey being charged.

I am duly impressed.


Charles
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Old Jul 09, 2009, 11:49 AM
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USA
Joined Jan 2002
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Quote:
Originally Posted by everydayflyer
Just returned from field where I used 208B to charge several 3S 3300 LiPolys.

One charge @ 15A in 9 min. 2275 mAh in and charge rate started to taper down. 12:48 Done , 2,539 mAh in. Charge set Balance Storage / Normal Speed.

Another charge with Inspector watt meter checking power to charger.
Same charge settings and same battery( hyperion G3 3S 3300).

PS two 125AH deep cycles in parallel .
No load 12.56 volts
1 min. into charger 12.0 V and 15.9A to charger.
7 min. 11.93V and 17.25 A to charger
12:31 Charge Done
Mininum V under load deep cyles 11.9 , 2,729 mAh pulled from them.
2,521 mAh delivered to 3S LiPoly.
MAx charge rate reached in watts 211.

2,521 / 2729=92.3% effeciency.

Some say that is not correct way to calculate effeciency but in my opion it is as it shows how many Ahs are uses per Ahs delivered to battey being charged.

I am duly impressed.


Charles
How does this compare to your Hyperion 720I NET3?
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Old Jul 09, 2009, 12:05 PM
Southern Pride
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Haralson County GA. USA
Joined Oct 2004
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Hyp. Net3 TP PP 40C charged at 16.5A (5C)
14:41 / 2,804 mAh

I seem to remember 720 effeciency being closer to 80-85% but could be wrong.

I started a tread months ago listing some charging effeciency numbers based on consumed versues delivered but noone really seemd interested for whatever reason so ........................

To me it is obvious that 208B is more effecient than most if not all other chargers just based on mininum amount of heat generated in it's circuits. Super small case ,small single fan, no massive heat sinks yet fan runs a mininum amount and I have yet to see internal temp. over 120F.

Lnk to referenced post

http://www.rcgroups.com/forums/showp...46&postcount=1


I will be testing addational new LiPolys and will try to update post there with charge data from iCharger 208B and Hyp. 720i Net3.
Charles
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Old Jul 09, 2009, 12:07 PM
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Joined May 2009
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Quote:
Originally Posted by everydayflyer
Hyp. Net3 TP PP 40C charged at 16.5A (5C)
14:41 / 2,804 mAh

I seem to remember 720 effeciency being closer to 80-85% but could be wrong.

I started a tread months ago listing some charging effeciency numbers based on consumed versues delivered but noone really seemd interested for whatever reason so ........................

To me it is obvious that 208B is more effecient than most if not all other chargers just based on mininum amount of heat generated in it's circuits. Super small case ,small single fan, no massive heat sinks yet fan runs a mininum amount and I have yet to see internal temp. over 120F.

Charles
Your "numbers" pretty much match mine.

I seldom use my Duo 2, anymore.
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Old Jul 09, 2009, 03:09 PM
Southern Pride
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Haralson County GA. USA
Joined Oct 2004
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Monitoring with 208B ?

So page 18 of maual states 208B can be used to monitor cells when using other devices to charge or discharge Lithium pack.

How?

If I go into Monitor mode I have to connect main power leads to get any cell voltage readings and as soon as power lead is disconnected alarm sounds.

Charles
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Old Jul 09, 2009, 03:36 PM
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thomanie's Avatar
Trondheim, Norway
Joined Jun 2003
2,807 Posts
Quote:
Originally Posted by PeteB
I'm curious, how many iCharger firmware updates have there been?
My (highly likely early production) 1010B non-plus was received with v2.6, and there seem to have been a v2.4 too according to early posts.

Since then there's been, IIRC:
- 2.7
- 2.8
- 2.9
- 3.01 (enter the plus-versions with USB)
- those listed in Release Notes (http://www.hillrc.com/UploadFiles/Re...s-iCharger.txt) 3.02 through 3.10.

That makes 15 in total. I'm sure someone will correct me if I'm wrong

T
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Old Jul 09, 2009, 03:50 PM
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USA, IL, Champaign
Joined Jul 2005
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Forming charge NIMH issue

I fail to understand why the forming charge is setup to initially charge all sizes of NIMH at 1C by default. There are high capactiy small cells that will melt down at that rate. IMHO the initial rate should be user selectable when setting up the forming charge. I have not upgraded to the latest firmware, but adjusting the charge rate while charging in the forming mode did not work on my 106B chargers.
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Old Jul 09, 2009, 04:12 PM
Southern Pride
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Haralson County GA. USA
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IMO a forming charge should be at C/10 for 14 hours at CC (non peak) and should be preceeded by a discharge to 0.9V per cell.

The option to charge charge rate during te charge was just added with last update.

Charles
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Old Jul 10, 2009, 06:54 AM
Southern Pride
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Haralson County GA. USA
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I desire an answer please!

http://www.rcgroups.com/forums/showp...postcount=4132


Charles
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Old Jul 10, 2009, 07:17 AM
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USA, IL, Champaign
Joined Jul 2005
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Quote:
Originally Posted by everydayflyer
IMO a forming charge should be at C/10 for 14 hours at CC (non peak) and should be preceeded by a discharge to 0.9V per cell.

The option to charge charge rate during te charge was just added with last update.

Charles
Thanks for the information for manual forming charge. I will install the latest updates soon.

I would still like to see an update to the firmware for automatic forming charge to allow user selectable initial charging rate. I would like to know what others think about this as well?
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Old Jul 10, 2009, 10:24 AM
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So. Cal.
Joined Oct 2004
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Quote:
Originally Posted by everydayflyer
Perhaps a splitter on the main output lead? One for intended device and one for the monitoring circuitry in the iCharger. Haven't tried it myself but it seems plausible. Agreed that it's less desirable this way as you have additional voltage drop of extra connector and wire of splitter and perhaps miniscule current draw of iCharger but it seemingly should work.

Mark
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Old Jul 10, 2009, 11:19 AM
Southern Pride
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Haralson County GA. USA
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Mark I considered that but as there is nothing in the manual covering this I was leary to try it. I do not know if the chargers circuite could be damaged by such a paralled circuite. Other chargers such as the TP1010c /210V combo and all of the Hyperion chargers will monitor cell voltages with only the balancing leads connected. I had hoped that iCharger would function the same. I use these others to monitor cell voltage during my discharges with CBA II and CC-400 units all of the time. I also hoped that I could use the 208B's onboard logging function durning my discharge and cycling test.



Charles
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Old Jul 10, 2009, 03:06 PM
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lost's Avatar
USA, FL, Hobe Sound
Joined Dec 2006
156 Posts
Quote:
Originally Posted by Julez
Hi!

I got some suggestions from users of a german forum:

The first thing is a kind of hassle-free capacity check for Lixx cells:
Discharge, charge, discharge to storage voltage automatically.
This way, the capacity can be checked with logview or without, and one does not have to start the 3 runs manually.
##########
My suggestion would be 2 additional automated programs for Nixx cells:
First, a break-in program for Nixx packs:
Forming charge, discharge, charge. Repeat discharge and charge, until the capacity increase between the cycles is less than 10%

Second, a weak-up and check program for Nixx packs:
Forming charge, discharge, charge.
This would be convenient for planes, which are only flown very seldom.
This way, the pack gets a forming charge to bring it back to shape, it gets a discharge, so that I can check whether tha capacity is OK, and it gets charged again, so that I can use it right away for flying.
###########
Finally, Gerd made the suggestion to improve the charger's hardware, so that while discharging, the energy is fed back into the car battery, and not wasted as heat.

Cheers,

Julez
Yes please implement these changes for us Nixxxx users. I am starting to feel that perhaps all the changes done to this charger are mostly for Lixxx users. I understand that Lixxx's are the most used batteries but some of us still also use Nixxx's. In an other post Julez says that perhaps the Nixxx charging function should be similar to Lixxx's, like entering # of cells etc...
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