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04-11-2012, 07:30 PM   #16
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Pentax does not make batteries :-)

I got a Lenmar version from Adorama for about 16 bucks. I just alternate batteries once in awhile and detect no difference.

04-11-2012, 09:28 PM   #17
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I bought mine off ebay from Davismax and they work as least as well as the oem battery. I paid $13.44 for 2 of them.

You can see them at http://www.ebay.com/itm/110810295648?ssPageName=STRK:MEWNX:IT&_trksid=p3984....ht_2282wt_1037
04-14-2012, 11:00 AM   #18
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Why don't you just buy a battery grip and use Eneloops with it? Since I use those eneloops with my flash, it's getting sort of handy using it in the BG as well :-)
04-14-2012, 11:55 PM - 1 Like   #19
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There are a lot of "counterfeit" and cheap batteries on the market from China, with questionable specs and quality. I would not risk buying them online. Besides, these are more likely to be made with questionable labor practices (sweatshop and child labor, un-safe work environments, etc), and I will not support that. However, most people could care less since "it's over there" and buy only based on the cheapest price. Just something for you to think about because cheap can have a human price.

04-15-2012, 07:11 AM   #20
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QuoteOriginally posted by Tim R Quote
I recently bought an Energizer (recognised UK brand) 1860mAh from Amazon UK for the K5 as a back-up battery. It seemed fine when I tested it briefly. However, last week I spent a week camping in the mountains on the Isle of Rum and taken circa 1600 photographs on the K5 and the original Pentax battery managed not to run out. I only used flash on half a dozen or so photographs, but used a Sigma 70 - 300 lens with Optical Stabilisation switched on (which drains battery power) for several hundred photographs . . . all this leaves me wondering why anyone would ever actually need a replacement battery for the K5 as the Pentax one seems to be so reliable.
I'd never rely on just having 1 battery, no matter how good the OEM Pentax one is & I agree, it is very good.

I also bought the Energiser as unlike many 3rd party batteries it's rated the same as the Pentax i.e. 1860mAh. I alternate between the two & can't tell the difference between them & wouldn't hesitate in recommending the Energiser D-Li90.
04-15-2012, 07:35 PM   #21
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QuoteOriginally posted by Quicksand Quote
I have a set of those Wasabi Power K-5 batteries and the accompanying charger, the same set kenafein refers to. I have had them for a year or more, I think.

The batteries are fine. Anecdotally, I don't think they last as long as the original battery, but they were cheap, and I haven't had any functional problems with them whatsoever. They appear to be as nicely made as the original battery.

The charger is fantastic, though. It's compact, doesn't require a cord (WTF, Pentax?), and the prongs of the plug rotate into the body of the charger for easy stowage. I'd say the charger was almost worth the price of the package deal by itself.

I'll admit that I bought that kit for three reasons: (1) price; (2) it's from Amazon rather than some random eBay seller overseas; and (3) the awesome name and green flame logo for Wasabi Power.

How could I go wrong with those criteria? (Don't answer that.)
The Pentax battery is rated as having 25% less power than these Wasabis. They both last a long time though. I can't tell the difference so far.
06-19-2012, 05:08 AM   #22
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I'm looking for aftermarket as Pentax Australia list the K5/K7 battery at A$139 (about US$140).
06-19-2012, 06:26 AM   #23
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QuoteOriginally posted by PentaxScott Quote
I ordered two Flashpoint (Adorama) batteries when I got my K-5 on the $989 fire sale. At a meager $9.95 each you can get 4 of them and still spend less than a replacement Pentax OEM. I charged up one of those and used it in the camera first (before the OEM) and its still going strong...

Flashpoint ADDLI90 Replacement Battery, Pentax Camera DLI90

For the record, the original Pentax battery is rated at 7.2v at 1850 mAh. While the images show the Flashpoint battery at 7.4v at 1500 mAh, this is incorrect. These batteries are actually 7.2v at 2000mAh! While you may be able to save a dollar or two ordering them on a place like eBay, Id prefer to spend the money at a place like B&H/Adorama, where their customer service will take care of me if there were an issue with one of the batteries.
I bought one of them and can't complain a bit. Not an ounce of trouble and they last longer (they should being 2000 ah) than the Pentax battery. The specs on mine are listed right. (7.2 @ 2000 mAh)

06-19-2012, 06:36 AM   #24
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for my K10 and K7 I have bought batteries from China. the trick is just making sure the Mah is in the same range or more (dli 90 is 7.2v 1860 mah) in fact there are many 22000 mah aftermarket that hold more charge than the Pentax for $15 or less (heck you can get 2 for $13)
I have no brand loyalty when it comes to batteries. Pentax doesn't make them in any case, they just job it out.
06-19-2012, 11:36 AM   #25
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I use an Ebay cheapie. It's rated at 7.4v, rather than the oem's 7.2v, but has worked fine and seems to equal the original's charge life.
06-22-2012, 08:40 AM   #26
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batteries...

As many of you, I also bought a cheap one via ebay.
Capacity, charging time, an look and feel is more than expected .
However, problem arises when I do Interval shooting.
For example say I take 10 pictures every 5 seconds, it will take only 5. Same thing with more pictures and even with bigger time interval. I always get only half of pictures.

Using original battery I have never had such funny behavior.
I find it out during some astrophoto tests .
06-22-2012, 09:20 AM   #27
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Back to one of StDevious' original questions:

With all those K-7 and K-5s sold, why IS it so impossible to find a K-AC50 external power supply anywhere - repeat: not charger but supply???
06-22-2012, 09:42 AM   #28
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QuoteOriginally posted by Stone G. Quote
Back to one of StDevious' original questions:

With all those K-7 and K-5s sold, why IS it so impossible to find a K-AC50 external power supply anywhere - repeat: not charger but supply???
An adjustable AC adapter won't work? You should be able to match the voltage requirements.
06-22-2012, 12:56 PM   #29
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QuoteOriginally posted by kenafein Quote
An adjustable AC adapter won't work? You should be able to match the voltage requirements.
Alas, the plug is rater special and the current (ampere) spec. above normal AC adapters.
08-11-2012, 12:00 PM   #30
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QuoteOriginally posted by kenafein Quote
I bought this kit. It comes with 2 batteries, a quick charger and a car adapter; all for 24.99. Word on the internet is they are great and last just as long as an OEM.

Amazon.com: Wasabi Power Battery and Charger Kit for Pentax D-LI90, K-5, K-7, 645D: Camera & Photo
QuoteOriginally posted by Quicksand Quote
I have a set of those Wasabi Power K-5 batteries and the accompanying charger, the same set kenafein refers to. I have had them for a year or more, I think.

The batteries are fine. Anecdotally, I don't think they last as long as the original battery, but they were cheap, and I haven't had any functional problems with them whatsoever. They appear to be as nicely made as the original battery.

The charger is fantastic, though. It's compact, doesn't require a cord (WTF, Pentax?), and the prongs of the plug rotate into the body of the charger for easy stowage. I'd say the charger was almost worth the price of the package deal by itself.

I'll admit that I bought that kit for three reasons: (1) price; (2) it's from Amazon rather than some random eBay seller overseas; and (3) the awesome name and green flame logo for Wasabi Power.

How could I go wrong with those criteria? (Don't answer that.)
I have usually gotten through with the original battery on my K20. Always intended to get a spare. Now, with the K5 I have 3 nights of shooting in Boston while there on a business trip at the end of the month. Intending to hit live view pretty hard, so with three batteries and 2 chargers, I should be set. Earlier in the K5's life cycle I thought I read that mirror flopping or whatever was possibly associated with non Pentax batteries. I think that this option should work pretty well. Just ordered the package. Thanks!!

The forum's experience base comes through yet again!!


Last edited by interested_observer; 08-12-2012 at 01:05 PM.
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