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07-29-2018, 05:00 AM   #1
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D-Li109 battery alternatives?

Hi everyone,

I've been looking at amazon and batteries that come up when looking for the D-Li109 battery for my K-50. The original Pentax ones cost quite a bit. Does anyone know if any of the 3rd party offers actually come close to being worth the ~20 USD prices they go for?

Any suggestions on what is or definitely isn't good is very welcome!

07-29-2018, 05:15 AM - 1 Like   #2
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I have a Power 2000 I use with my other 2 Pentax batteries. I can not give shutter counts with each , but I t seems to be close to what get out of my Pentax batteries. In fact it is the one in my camera right now. . All three are getting age on them I have never regretted purchasing that battery
07-29-2018, 05:26 AM - 3 Likes   #3
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I use the B&H house brand (Watson) replacement batteries, both for K-50 and K-3... so far, I cannot tell the difference between them...
07-29-2018, 05:30 AM   #4
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With the K-50 you can also use eneloops or other rechargeable AA batteries. You need a D-BH109 battery holder for that, which can be found cheap if you buy third party.

07-29-2018, 05:41 AM - 2 Likes   #5
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QuoteOriginally posted by pepperberry farm Quote
I use the B&H house brand (Watson) replacement batteries, both for K-50 and K-3... so far, I cannot tell the difference between them...
I've had similar experience with my Watson - little to no performance difference compared to the Pentax branded battery. Don't forget that there are very few actual battery manufacturers in the world. Many brands take whatever the manufacturers offer, while others including most of the camera manufacturers, seem to have their own specs, reliability and QA standards that the manufacturer has to meet.
07-29-2018, 06:06 AM   #6
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Patona are the only ones I tried on the 50 & 70 which disappointed, Maximafoto were OK
07-29-2018, 06:08 AM - 1 Like   #7
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Wasabi worked for me. Maybe 1/4 less staying power than oem.

07-29-2018, 06:12 AM   #8
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No complaints with Wasabi and my K-3 II.
07-29-2018, 06:42 AM   #9
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I've used Wasabi brand in both my K-30 and my K-3. I have had similar battery life to OEM, and have had only one issue with the Wasabi batteries. One of the K-30 batteries had a cell go bad and swelled ever so slightly after about 4yrs. I noticed it because it would not fully eject from my camera. It came out easily enough using my fingers and grabbing the protruding portion of the partially ejected battery, and after that I just retired that particular battery to the recycler. The other battery, along with the OEM, is still going strong after nearly six years.
07-29-2018, 06:54 AM   #10
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I also used wasabi batteries, they work well but not as well as the OEM ones.
07-29-2018, 06:57 AM   #11
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I've completely given up on D-Li109 batteries. The ones I have are wholly unsatisfactory when it comes to holding a charge. Pentax should have stuck with the D-Li50, which is a far superior battery design. I find the D-Li1-9 batteries I have are best used to prop objects up at an angle so I can photograph them to sell on eBay. Meanwhile, Eneloops power my K30, where they greatly outperform any D-Li109 or equivalent I've tried. The generic AA battery holder was one of the best sub-$3 purchases I've ever made on eBay.
07-29-2018, 07:28 AM - 1 Like   #12
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I purchased this kit, seems to work ok.

Newmowa D-Li90 Battery (2-Pack) and Dual USB Charger for Pentax D-LI90 and Pentax 645D, 645Z, K-01, k-1,K-3, K-5, K-5 II, K-5 IIs, K-7
07-29-2018, 07:45 AM   #13
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Better so far, PATONA Battery f. Pentax D Li109 D-Li109 K30 K-50 K-500 K2 K-2 K-R KR | Pentax | Batteries | CAMERA | PATONA ONLINESHOP
07-29-2018, 09:32 AM   #14
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QuoteOriginally posted by E-man Quote
I've completely given up on D-Li109 batteries. The ones I have are wholly unsatisfactory when it comes to holding a charge. Pentax should have stuck with the D-Li50, which is a far superior battery design. I find the D-Li1-9 batteries I have are best used to prop objects up at an angle so I can photograph them to sell on eBay. Meanwhile, Eneloops power my K30, where they greatly outperform any D-Li109 or equivalent I've tried. The generic AA battery holder was one of the best sub-$3 purchases I've ever made on eBay.
Not my experience at all. My enloops were ok with the k50 but not a significant gain over the pen battery.
07-29-2018, 10:11 AM   #15
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QuoteOriginally posted by UncleVanya Quote
Not my experience at all. My enloops were ok with the k50 but not a significant gain over the pen battery.
I never tried Eneloops in my K-30 I used Copper top rechargeables . The rate with them was about half life of the OE battery. I still have the adapter it just doesn't do me any good any longer.
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