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12-30-2010, 08:33 AM   #1
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Lithium-Ion battery Vs AA Ni-MH on a Kr

Hi there

I own a Kr for 4 weeks now, and I must say that I really enjoy it so far...
But quite doubtful about the battery life though. For the first two weeks, I've used the stock battery and never managed to shoot more than 270 photos before it went dead! No flash was used.
Even after 2 calibrations, not better.

Got myself a receptor for AA batteries and after the first charge did get 320 photos, including some flash pics!

I think that Pentax has clearly over-estimate the n of shots that can be taken from a full charged stock battery.
They claim 560 images but I am not quite sure of what they mean by normal saving ?
All my testing was done at the maximum quality, and within 5 days time.

Would be happy to have feedbacks from other users. I have read that someone has manage to shoot 1000 ++

So what's you're score or opinions?
Thanks
Rgds

12-30-2010, 10:22 AM   #2
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thank you.

That's the info i want to know as well, because the additional battery holder is quite expensive, and i am still wondering should i buy an additional li-ion battery or go with the aa batteries.
12-30-2010, 10:33 AM   #3
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u might be using the lcd panel too much i ve been using stock batt. till 2 months. And i was taking 500-600 photo each charge if i want the battery get empty xD but as i know lithium ions arent designed for fully decharging. so im recharging it every 300 400 shot.
im thinking to get a battery holder, since it gives flexibility of using AAs. also lithium AAs are really high resistant to water changes and have stunning durability.
12-30-2010, 12:48 PM   #4
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Just to point out, Li-ion and ni-cads perform better after a few weeks, often about 10 - 15 recycles (some times more) before they are "fully conditioned". So as a general rule, dont expect miracles for the first few weeks.

woody

12-30-2010, 08:46 PM   #5
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I wonder about the AA battery holder at the current price. It doesn't make sense when K-R clone batteries are only $9.23 on ebay. Get 3 of these batteries and you should get plenty of shots from 4 batteries.
12-31-2010, 01:07 AM   #6
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QuoteOriginally posted by antzutd Quote
thank you.

That's the info i want to know as well, because the additional battery holder is quite expensive, and i am still wondering should i buy an additional li-ion battery or go with the aa batteries.
You are welcome, I had the same thoughts but went for the holder as with it I can use any kind of AA's or lithium AA which can be found anywhere...

QuoteOriginally posted by deathdream Quote
u might be using the lcd panel too much i ve been using stock batt. till 2 months. And i was taking 500-600 photo each charge if i want the battery get empty xD but as i know lithium ions arent designed for fully decharging. so im recharging it every 300 400 shot.
im thinking to get a battery holder, since it gives flexibility of using AAs. also lithium AAs are really high resistant to water changes and have stunning durability.
True that the first week or so I did play with the lcd panel a bit, but no more

QuoteOriginally posted by ukwoody Quote
Just to point out, Li-ion and ni-cads perform better after a few weeks, often about 10 - 15 recycles (some times more) before they are "fully conditioned". So as a general rule, dont expect miracles for the first few weeks.
woody
Let's wait and see then.

QuoteOriginally posted by gp1806 Quote
I wonder about the AA battery holder at the current price. It doesn't make sense when K-R clone batteries are only $9.23 on ebay. Get 3 of these batteries and you should get plenty of shots from 4 batteries.
You won't be able to use any kind of AA's or lithium AA doing so. So far with both the stock one and the holder I'm good for 600 shots. That's suits me actually!

Thanks for you're comments
Bernard
12-31-2010, 01:41 AM   #7
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oh you're up from 270 to 600 now? That should be fine...I am going to try and get a knock off holder for $20, hopefully soon.
12-31-2010, 02:00 AM   #8
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Yep but don't forget that if you are travelling you'll need to take the charger with you. Quite small tho and can be used in a car!
I got this one -> mobile-focus.com | GP POWERBANK H500 - GP POWERBANK H500 - battery charger kit - batteries - Electronics - Mobile Phone & Smartphone Accessories Specialist | Belgium - Europe

12-31-2010, 12:33 PM   #9
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I don't remember the exact amount, but my first charge got between 900-1200; I was on vacation taking tons of pictures and forgot to take note. I also recorded several short videos. I'm not sure how people are only getting 200-300 shots.

I was going to buy the AA adapter as I have a ton of eneloops for my old camera, but found a site that sells K-R batteries for $13/ea. I opted to buy 3 extra instead of worry about carrying an adapter + AA.
01-02-2011, 01:11 PM   #10
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QuoteOriginally posted by t3ch Quote
...
I was going to buy the AA adapter as I have a ton of eneloops for my old camera, but found a site that sells K-R batteries for $13/ea. I opted to buy 3 extra instead of worry about carrying an adapter + AA.
Ditto. It was a no-brainer, although the 2 spares I bought (7.4v*1400mAh) cost USD20 each, delivered. You scored well @ 13 apiece and K-7/5 owners are even luckier at ~USD8-12 to suit their model.

Other posters here, who are tech-knowledgeable on batteries, convinced me a few months ago with numbers that Li-Ion (single blocks) was superior to AA-pack anytype equivalent in many ways, and since I got the K-r their claims have proved right, in all aspects. So I thank them again for sharing that info.

Fwiw: a few words for those interested in the optional AA adapter; prior to this topic I've read some quite silly posts on here (and other forums) since the K-r first emerged claiming that, paraphrased: "Pentax's price is way too much for 'only a bit of cheap plastic'", and "I will wait for 'Asian knockoffs for 5 bucks' to appear".

Well, as we all know those mysterious copies haven't surfaced yet (yet many cheap Li-Ion for K-r did, promptly), and, to be honest, looking at the thing with my meagre 40+ yrs of mfgr'ing and engineering experience, I fail to see how even the most poverty-stricken 9th-world economy could tool-up, produce and worldwide market such an item that obviously isn't "simple bit of plastic" for five bloody dollars!
It's logical that the sales demand volume potential simply isn't there, and never will be, either. So let's be real huh?

YMMV on this, but the Adorama price USD34.95 (for a genuine) seems pretty fair to me, or you could order one from my local cam shop a few streets away for AUD62.00 if you want!

Enjoy. (hope that attachment worked properly.)

https://www.pentaxforums.com/forums/attachments/116-pentax-k-r/79544d1293999821-lithium-ion-battery-vs-aa-ni-mh-kr-k-r-aa-battery-adapter-d-bh109.jpg

.R.
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Last edited by Hypocorism; 01-02-2011 at 02:09 PM.
01-02-2011, 03:12 PM   #11
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I suspect that the Li ion cell in the K-R clone battery is the same as some other camera. All the manufacturer had to do was design the plastic housing.
01-03-2011, 01:22 AM   #12
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QuoteOriginally posted by Hypocorism Quote
Fwiw: a few words for those interested in the optional AA adapter; prior to this topic I've read some quite silly posts on here (and other forums) since the K-r first emerged claiming that, paraphrased: "Pentax's price is way too much for 'only a bit of cheap plastic'", and "I will wait for 'Asian knockoffs for 5 bucks' to appear".

Well, as we all know those mysterious copies haven't surfaced yet (yet many cheap Li-Ion for K-r did, promptly), and, to be honest, looking at the thing with my meagre 40+ yrs of mfgr'ing and engineering experience, I fail to see how even the most poverty-stricken 9th-world economy could tool-up, produce and worldwide market such an item that obviously isn't "simple bit of plastic" for five bloody dollars!
It's logical that the sales demand volume potential simply isn't there, and never will be, either. So let's be real huh?
I'm with you on that one
01-05-2011, 08:27 PM   #13
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D-BH109 clone

Don't know what the price is, but the cloners have listed the battery holder for sale on the web.

Battery Holder D-BH109 - PENTAX (China Manufacturer) - Products

I don't think I need 100 of them. But the ebay retailers will probably be listing them next month. Expect a higher price at first. Will we see '5 bucks'? I don't think it will be that cheap. Maybe 20? Wait and see!
01-05-2011, 09:54 PM   #14
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QuoteOriginally posted by gp1806 Quote

I don't think I need 100 of them. But the ebay retailers will probably be listing them next month. Expect a higher price at first. Will we see '5 bucks'? I don't think it will be that cheap. Maybe 20? Wait and see!
Great detective work there.

Agree with you on the opening price. If the eBayers could later slash it down to USD15 incl postage that would be a good deal, maybe?

--------
Anyone know about Eye Cups to fit K-x/K-r? (not the original type)

I desperately need something that works to seal off all extraneous bright day or night lights flare interference from the eye when against the viewfinder.

Was thinking maybe in this style might do it. Experience please?
http://cgi.ebay.com.au/Eyecup-Eye-Cup-Pentax-K100D-K110D-K200D-K20D-K10D-/18...item29fcbef525

.R.
01-05-2011, 10:03 PM   #15
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Gonna e-mail them and see how much they charge. Maybe we can do a group buy or something. hahaha

P.S. I would probably pay $20 for one from Ebay shipped.

Last edited by hawk1500; 01-05-2011 at 10:19 PM.
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