Hi allHaving had a pile of problems with NiMH batteries, the.ist-D and the grip, I found that Uniross now do a special CR-V3 rechargeable.The Li-Ion batteries are 3.7V, but Uniross have separated the charging pin, so presumably they include a diode to reduce it to 3.0V. They claim 100% compatible with normal Lithium CR-V3, and specifically mention the Pentax.ist-D.They are 1300mAh - but don't compare this to 1300mAh NiMHs! The NiMHs only produce 2.4V maximum, so with these Uniross CR-V3 you end up with 0.6V more headroom, and consequently more shots.

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I strongly suspect they will outperform 2500mAh NiMHs. But I'll let you knowOrdered them yesterday from PicStop:Only downside is they use a regular linear power supply, which weighs a ton! (Produces 12V, 500mA - and I thankfullly have a switch mode version). Also includes car adaptersHave a couple of important events to cover over the next week or so - will get back with a progress report.Matt. I'll be very interested to know how well these perform as the price is very reasonable when you compare it to the price of non rechargeable lithium battery - about 50% more plus the charger. I've also been having problems with regular AA Ni-MH cells as it seems that often one of the 4 cells looses charge quite quickly which causes the camera to stop functioning. Sometimes turning off and turning back on again helps to get a few more shots but it isn't very satisfactory.

Unfortunately I don't have a charger that can only charge one cell at a time so end up having to charge a pair and I'm not sure what effect this has on the good cell.Steve. Ok, quick progress on the batteries.I bought 2 kits (charger + battery) and 2 extra batteries. The charger itself is very light and small. It can be powered by an included 12V car adapter, or by a hunking great plug top charger (if you travel, get a decent 12V 500mA switch mode supply - 7dayshop do them). The batteries have three contacts - the two that connect to the camera, and a small one in the middle that is the charging pin. When measured, there was about 0.6v difference between the '+' and this pin (because Li-Ion cells are 3.7v, and you need 3v to be compatible with Lithiums).When freshly charged I thought they seemed to have a little too high a voltage.

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The autofocus was incredibly quick on the.ist-D and seemed to have more torque. They measured at higher than 3V, but that was with no load. However, exposure and everything else was absolute perfect.

I did double, triple check that Uniross claimed it was '100% compatible'. So, after a little apprehension I went ahead.Too a few hundred shots at a wedding on Saturday. I was really slamming the.ist-D, using the LCD quite a bit and generally giving it some hassle. And what do you know? The battery meter still shows fully charged.

Awesome!At the same time I used an.ist-DS (fitted with a bright prime). This had NiMHs installed which died during the ceremony (great ). Quick change over to the other set of CR-V3s, and that too just kept running.At home I fed the NiMHs to a charger, and it turned out that one AA was seriously flat and had let the whole pack down. Used this charger: - which I can highly recommend!

I've used it to refresh all my NiMHs and it showed up two or three cells that hadn't been properly charged in the other chargers (which charge in pairs).So, all in all, I'm sold on the CR-V3's!Have another do to cover next weekend. And I'll be using them for that!Matt. Hello,Not been on the forum for a while but saw this and thought you might like to here my experience.I use CR-V3's.

They are great, brilliant in fact. I would have though most people would use these. They last forever. NiMH run out so quick.But the rechargable CR-v3 start to die out after a while and then dont hold their charge aswell (as is the case with most rechargables i think).I think in thre long run they might be more costs effiecent but the price of the recharbales is quite high when you can get standard CR-V3's from onedayshop for not that much. Having the recharables run out is a bit of a pain and they can suddenly fade quite quick.I would recommend stickking to normal CR-V3's.

Rechargeable's expensive???I use 2100mAh NiMH's which I buy for Euro. 2,50 for 4 pieces. So I don't mind taking 2 sets with me.

Charging takes 1,5 hours and the lifetime is pretty long ( I don't use the built in flash much).I have never ran out of power in a bad moment and just in case I allways have the set of lithium batteries that came with the camera in my case.NiMH is the most cost effective way of powering your camera.Camera:K20D Ist.DS Spotmatic II MZ-10Pentax Lenses: DA16-45 DA50-200 50A 1.7Tamron Lenses: 28-200Takumar Lenses: SMC 55 1.8Sigma Lenses: EX DG 50-500 'Bigma' EX 50mm MacroFlashes: Metz 58 AF-1 Samsung SEF-36PZF Pentax AF-220T. Golfdiesel wrote:rechargeable's expensive???Rechargeable CR-V3 batteries, which are Lithium Ion (Li-Ion).Just to reiterate what I've said above - I've had all kinds of problems with AA NiMH batteries (all ratings and different manufacturers, but the worst was 7dayshop 2500mAh - but read on!).So I went for the rechargeable CR-V3 batteries (2 chargers and 4 batteries). Now these have, so far, been absolutely great. Time will tell whether these particular Uniross ones will degrade over time.But, as I mentioned, I've also been using the Ansmann Energy 8 charger. I put all my NiMH AAs through it and discovered that some of them had a much lower than the others. Having charged them through this, all my AA batteries are performing much better.Most chargers work with a pair of AAs, and if there's one cell slightly down they don't seem to be able to get them both charged. Perhaps if you left them trickle charging this would resolve, but certainly not in the fast charge cycles.

With the Energy 8 charger it charges them individually (ie you can put in one AA, or 3. Up to 6).Food for thought anywayMatt. Interesting thing from the pentax website (i think most of the rechargeable CRV-3s on ebay are one of these designations)Q. What types of batteries are available for.ist D?A. The.ist D can be powered by the two CR-V3 lithium batteries, four AA lithium battery, AA Ni-MH rechargeable and nickel batteries, or AA alkaline batteries.Note: We do not recommend using rechargeable CR-V3 batteries with our digital cameras due to issues with the output voltage.

Specifically, avoid rechargeable CR-V3 batteries with these designations: RCR-V3, CR-VX, BP-11. I have bought the rechargeable Uniross CR V3 's but not yet used them. I doubt that Uniross would recommend them for all cameras using a CR V3 set of batteries without ensuring full compatibility, otherwise if they did any damage to your camera you would have a claim against them under the sale of goods act. As tests so far seem to indicate they work just fine, then I have no problems and will use them just as soon as my current batteries run out. I'm actually using the original CR V3's that came with my.istds at the moment as I had no normal AA rechargeables with me last time I was out and needed to change.Pentax will just be covering themselves in case anyone stuck some cheap rechargeables in that were not fully compatible.Philip.

Press Release:Uniross, the #1 name in rechargeable battery technology, has released its new 15-Minute Charger, capable of completely recharging AA and AAA batteries in only 15 minutes, making it the world’s fastest battery charger.Packed with innovative new features, Uniross has broken technological boundaries with this product. A charger with its own computerised brain, it utilises an intelligent safety feature to cut the charger out if batteries are left in for over 20 minutes, whilst still keeping them topped up with power. In addition, a built-in fan automatically keeps the batteries cool, while an operational indicator light informs users of any problems during the charge process. Autocom delphi 2013 r3 keygens.

The charger also comes with an adapter which allows it to be used from a car cigarette lighter, providing even more recharging options.“ Our consumers want to be able to use their gadgets without worrying about the amount of time it takes to recharge their batteries,” said Mike Doole, Managing Director of Uniross. “ With the 15 minute High Speed charger, we are giving our consumers the fastest technology in the world and hopefully, removing one of the greatest barriers people have in accepting rechargeable batteries.”The introduction of the Uniross 15 Minute chargers is good news for all types of battery users.

For photographers, flash ready batteries can now be available in the time it takes to check and pack camera equipment. Family trips need no longer end with tears when toy batteries run out 100 miles from home.

From video game players to music lovers, for everyone that needs a battery and needs it quickly, the incredible 15-Minute charger from Uniross is the answer to their prayers!High Speed 15 Minute Charger, RRP £34.99. Recharges 4 AA or AAA batteries in 15 minutes. Intelligent charge control. Integrated safety timer with auto cut outThe new High Speed Uniross charger will be available from October from good electrical, department, catalogue and hardware stores and internet retailers. For more information please visit the website.