Using sync and charge cable connected to usb port the orange light would not go on and the battery looks to be discharging.
I tested three different cables from two brands Belkin/Brando. It looks like they discharge the battery when connected.
PC Usb port working properly with all kind of devices. Sync is ok with all cables.
Any similar experience anybody?
Thanks
Vang123
Two potential difficulties with these kinda cables....one is that if your battery is already low it will not work properly and just discharges the battery further
Also your usb port may not have sufficient power to charge...
.
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USB ports do not supply enough Voltage or Amperage to fulfill an Axim's power requirements, which is 5.4 V & 2410MaH. A USB Port does not put out anywhere near that amount, there are some Car Chargers with USB Configured outputs that may put out enough to deliver.....but still more slowly than a Dell AC Adapter.
If you try to charge a battery that is at 70-80%, or below, basically what happens is the Axim finds the USB Port is not fulfilling it's needs, so it looks for the next available power supply to boost the USB. That Next Available Power Supply is it's own battery. It don't care..........so it tries to "Charge Itself", this is a negative charging cycle. So what happens?
The battery starts to discharge (in an astonishingly rapid manner!). No problem you may think, there's always the backup battery.......
Well, when the main battery goes dead (probably in less than a minute), it calls up the next power source.....the backup battery! (Which, I imagine, lasts a whole whoppin' 3 or 4 seconds)!
And when both the main & backup are sucked dry............ba-da-BING!!!.............Hard Reset.
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Thanks Mr K...
Your reply is very good. I wander how dell-belkin and brando do not know it.
Since it is happening sometime and not happening some other time, would it be proper to say.
"if orange light does not light up disconect !"
How we may connect with those cables without discharging the battery?
Dell knows about it, that's why the description of their Sync Cable says nothing about using it as a charging cable.
The way to know if it's safe to attempt is to check your Battery Level first. if it's below about 75%.....don't try it. And anytime you do try, keep a watch on your battery level meter, if it starts dropping.........pull the cable out and charge with an AC Adapter first.
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I'm still a little confused. I have the Belkin sync/charge cable. I understand what you say with regards to insufficient power via the USB port,. But, are you saying you can never get a full charge via the USB port with a sync/charge cable?
For instance, if my X3i is connected via USB, and if my charge is above 70% or 80%, and if my battery meter eventually shows 100% and the power light is green, has my Axim fully charged? Or, is this actually not a full charge, and am I not getting the benefit of a full charge which I would get with my Dell wall charger?
I ask this becuase I usually keep my Axim connected to my notebook via the Belkin sync/charger until and after I see the green light, and I keep it plugged in overnight by my bedside with the Bell wall charger.
If the battery is over the 75-80% level, it will probably charge, however, the Green Light on the Axim or the Cradle doesn't necessiarily indicate a Full Charge, immefdiately.....read on, paying particular attention to the technobabble in the quote from the First Link:
All Consumer LiIon batteries (other than coin-type) have circuitry in the battery itself, to prevent overcharging under any circumstances.
LiIon batteries are actually quite dangerous commodoties and the only way they were allowed into the Consumer market was to include this circuitry.
Quote:
From First Link: The charge cannot be terminated on a voltage(Which is what the Axim's green light is indicating).The capacity reached at 4.2 Volts per cell is only 40 to 70% of full capacity. For this reason you need to continue to charge until the current drops, and to terminate on the low current. (Which is what the Battery's Sensing Circuitry is sensing, and then doing).
It is important to note that trickle charging is not acceptable for lithium batteries. The Li-ion chemistry cannot accept an overcharge without causing damage to the cell, possibly plating out lithium metal and becoming hazardous.
Thanks for the reply. But, I still am a bit confused.
QUOTE:
[For this reason you need to continue to charge until the current drops, and to terminate on the low current. (Which is what the Battery's Sensing Circuitry is sensing, and then doing).]
How do I know when "the current drops, and to terminate on the low current?"
I think what you've explained is essentially that the best way to charge my Axim is via the wall charger, rather than the USB port, although the USB port can provide some charging capability.
So, perhaps it makes sense to do my real charging via the wall outlet/or sync-cradle, and to attach the USB connector when the other options are not available (i.e., on the road with just the notebook computer) or when I just need a quick sync.
Originally posted by xdalaw "For this reason you need to continue to charge until the current drops, and to terminate on the low current. (Which is what the Battery's Sensing Circuitry is sensing, and then doing)."
How do I know when "the current drops, and to terminate on the low current?"
Unless you're real handy with a multitester and know just where to go poking it, you don't. But the Battery Circuitry does.
Quote:
I think what you've explained is essentially that the best way to charge my Axim is via the wall charger, rather than the USB port, although the USB port can provide some charging capability.
So, perhaps it makes sense to do my real charging via the wall outlet/or sync-cradle, and to attach the USB connector when the other options are not available (i.e., on the road with just the notebook computer) or when I just need a quick sync.
Does that sound right?
that's the way you do it,
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Custom kitchen deliveries.
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Sync and charge cable
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