K-x Battery Depletion Problem

gut1kor · 06-12-2011, 11:09 PM

I just read in this article that it takes atleast 6 to 8 hours to fully recharge 2700NIMH batteries - Rechargeable battery charging time and mA current calculator | Convert to units and culinary measures.
Whats your experience with eneloop batteries? How long were you charging your batteries?

Guna

bobmaxja · 06-13-2011, 05:46 AM

I use the Eneloops with the Sanyo charger . Yes the light from red to yellow to green and work flawless

gut1kor · 06-13-2011, 10:31 AM

Originally posted by bobmaxja

I use the Eneloops with the Sanyo charger . Yes the light from red to yellow to green and work flawless

How long does it took for you to charge them fully?

CP140 · 06-19-2011, 10:23 PM

Almost all of my battery charging experience comes from Amateur Radio, but the concepts are similar.

Look at your charger and see how many milliamps it puts out when charging. Divide that number into your battery capacity and that should give you the theoretical number of hours to fully charge the batteries from "dead".

Now add about 25%... that should give you a more realistic number of hours to charge from "dead"

Having said all that, mains voltages and frequencies that fluctuate, running an AC charger off an inverter (non sine wave) or using a 50Hz charger on 60 Hz mains (or vice versa) can play havoc with the charger's circuitry and cause it to think the batteries are charged when they aren't.

To see if you have a bad cell, put a voltmeter across the terminals of each cell. If one cell shows a markedly lower voltage than the others (assuming they have all been used/charged/discharged as a set), chances are you have a bad cell.

Regards

MacRider71 · 06-24-2011, 03:42 PM

Originally posted by twitch

Maha C9000

Make that 2!

MAHA / POWEREX MH-C9000 WizardOne Charger-Analyzer for 4 AA / AAA

Aso great review of the battery charger is at:

Maha MH-C9000 Wizard One Charger

Hope this helps.

jlaubza · 06-26-2011, 03:01 AM

Batteries will work in all regions - it is probably the charger at fault as you get the problem with two brands of batteries. I suggest you buy a set of Energizer Lithium AA's and see how long they last - you should get at least a thousand shots from them. If they don't last long then your camera is at fault.

photohubber · 07-19-2011, 04:49 AM

Thank you. I'm facing the same trouble with my Pentax K-x. Hoping for the best!

Last edited by photohubber; 07-19-2011 at 06:28 AM.

gut1kor · 07-19-2011, 08:05 AM

Thank you all. I did a test with a made in Singapore charger and fully charged the eneloops and on the first day I shot around 250 pics without flash on 17-Jun-2011. Still the batteries are not fully depleted, I mean I can use them on my k-x and take few shots even now. It seems having a charger specific to the country AC is better.

But I still feel my k-x is not showing the correct battery status. Hope for the best...

Cheers
Guna

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06-12-2011, 11:09 PM	#16
gut1kor Senior Member Join Date: May 2010 Location: Bangalore Photos: Albums Posts: 176 Original Poster	I just read in this article that it takes atleast 6 to 8 hours to fully recharge 2700NIMH batteries - Rechargeable battery charging time and mA current calculator \| Convert to units and culinary measures. Whats your experience with eneloop batteries? How long were you charging your batteries? Guna

06-13-2011, 05:46 AM	#17
bobmaxja Veteran Member Join Date: Mar 2010 Location: Laval, Quebec Canada Posts: 2,171	I use the Eneloops with the Sanyo charger . Yes the light from red to yellow to green and work flawless

06-13-2011, 10:31 AM	#18
gut1kor Senior Member Join Date: May 2010 Location: Bangalore Photos: Albums Posts: 176 Original Poster	Originally posted by bobmaxja I use the Eneloops with the Sanyo charger . Yes the light from red to yellow to green and work flawless How long does it took for you to charge them fully?

06-19-2011, 10:23 PM	#19
CP140 Senior Member Join Date: Jun 2011 Location: Greater Vancouver Photos: Gallery \| Albums Posts: 190	Almost all of my battery charging experience comes from Amateur Radio, but the concepts are similar. Look at your charger and see how many milliamps it puts out when charging. Divide that number into your battery capacity and that should give you the theoretical number of hours to fully charge the batteries from "dead". Now add about 25%... that should give you a more realistic number of hours to charge from "dead" Having said all that, mains voltages and frequencies that fluctuate, running an AC charger off an inverter (non sine wave) or using a 50Hz charger on 60 Hz mains (or vice versa) can play havoc with the charger's circuitry and cause it to think the batteries are charged when they aren't. To see if you have a bad cell, put a voltmeter across the terminals of each cell. If one cell shows a markedly lower voltage than the others (assuming they have all been used/charged/discharged as a set), chances are you have a bad cell. Regards

06-24-2011, 03:42 PM	#20
MacRider71 New Member Join Date: Jul 2009 Location: Swansea, NSW, Australia Posts: 21	Originally posted by twitch Maha C9000 Make that 2! MAHA / POWEREX MH-C9000 WizardOne Charger-Analyzer for 4 AA / AAA Aso great review of the battery charger is at: Maha MH-C9000 Wizard One Charger Hope this helps.

06-26-2011, 03:01 AM	#21
jlaubza Senior Member Join Date: Jul 2008 Location: south africa, johannesburg Photos: Gallery Posts: 228	Batteries will work in all regions - it is probably the charger at fault as you get the problem with two brands of batteries. I suggest you buy a set of Energizer Lithium AA's and see how long they last - you should get at least a thousand shots from them. If they don't last long then your camera is at fault.

07-19-2011, 04:49 AM	#22
photohubber New Member Join Date: Jun 2011 Location: Setubal Photos: Albums Posts: 6	Thank you. I'm facing the same trouble with my Pentax K-x. Hoping for the best! Last edited by photohubber; 07-19-2011 at 06:28 AM.

07-19-2011, 08:05 AM	#23
gut1kor Senior Member Join Date: May 2010 Location: Bangalore Photos: Albums Posts: 176 Original Poster	Thank you all. I did a test with a made in Singapore charger and fully charged the eneloops and on the first day I shot around 250 pics without flash on 17-Jun-2011. Still the batteries are not fully depleted, I mean I can use them on my k-x and take few shots even now. It seems having a charger specific to the country AC is better. But I still feel my k-x is not showing the correct battery status. Hope for the best... Cheers Guna

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