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07-15-2010, 11:18 PM   #166
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QuoteOriginally posted by Wyatt Quote
I've got a set of Eneloops for regular use, but also went by Costco and got their big pack of 48 AAs for around nine bucks. So, it costs about eighty cents to throw in a set of regular AAs, which is also an acceptable option.

Wyatt
Go green and use rechargeable batteries!

07-17-2010, 02:43 PM   #167
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The Eneloops are rechargeables, but one of the things I like about the Pentax is that I can carry some standard AAs as a backup in case the set in the camera die while I'm out in the middle of the desert. Sometimes there isn't a current bush nearby where I can recharge. It is nice to have options.

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07-17-2010, 08:42 PM   #168
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QuoteOriginally posted by Wyatt Quote
The Eneloops are rechargeables, but one of the things I like about the Pentax is that I can carry some standard AAs as a backup in case the set in the camera die while I'm out in the middle of the desert. Sometimes there isn't a current bush nearby where I can recharge. It is nice to have options.

Wyatt
Eneloops are made to hold 80% of their charge after a year. I don't think you will ever get stuck in the middle of the desert for a year, at least probably not well enough to take photos
08-22-2010, 09:52 AM   #169
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QuoteOriginally posted by rod_grant Quote
I use the MAHA C9000.
That is not quick - takes hours - but it charges/conditions the batteries beautifully.
I have the same charger. It defaults to 1,000 mAmp charging current, so it takes under 2 hours for 1,800 mAHr Eneloops, and you can set it for higher current and faster times if you want.

In practice I keep a spare set (or two) ready-charged; then it doesn't matter how long the charge takes. That's something which wouldn't be possible without low-self-discharge batteries.

08-22-2010, 10:59 AM   #170
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QuoteOriginally posted by Brangdon Quote
I have the same charger. It defaults to 1,000 mAmp charging current, so it takes under 2 hours for 1,800 mAHr Eneloops, and you can set it for higher current and faster times if you want.
eneloops are rated Typ. 2000mAh; Min. 1900mAh:



When the Maha C9000 first indicates DONE - mostly this is a termination on Peak Voltage of 1.47V (*see later) achieving about a 90% charge

Then there is a period of about 2 hours where a topoff charge of 100mA is applied to reach true full charge, before dropping into maintenance trickle charge of 10mA - crops from the Maha/PowerEX C9000 manual -





So to give the eneloops full charge using the default 1000mA charge current - would be approx 2 hours as indicated
+ Plus the 2 additional hours of TopOff charge at 100mA
- so a total of 4 hours - which is not really fast.

(*the C9000 has many termination strategies to keep batteries safe - but 1.47V termination seems to be the operational one both reported and seen by myself on eneloops and most NiMH in good condition - this as reported in tests achieves about 90% of full charge - which for most purposes is good enough BUT the additional 2 hours of TopOff charge at 100mA would be the full charge)
08-23-2010, 09:30 AM   #171
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QuoteOriginally posted by UnknownVT Quote
eneloops are rated Typ. 2000mAh
I sit corrected - misremembered that figure. Thanks. And although it's also a good point about the top-up, it's really up to the user whether it's necessary to wait the extra 2 hours for the sake of 10%. If you don't, then you get 1,800mAh after 2 hours.
08-23-2010, 09:55 AM   #172
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QuoteOriginally posted by Brangdon Quote
IAnd although it's also a good point about the top-up, it's really up to the user whether it's necessary to wait the extra 2 hours for the sake of 10%. If you don't, then you get 1,800mAh after 2 hours.
I just said that!
QuoteOriginally posted by UnknownVT Quote
this as reported in tests achieves about 90% of full charge - which for most purposes is good enough


08-29-2010, 10:55 AM   #173
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Eneloops... get 8 and keep 4 as a spare.. they will last (charged) for over 6 months. Other rechargeable batteries will die in certain DSLRs due to the voltage reduction after 100 shots even though they have plenty left. Or you can get the Lithium batteries. With lots of shooting they can last 6 months, unbelievable. But they are $10 or so for a set. Once any battery starts showing less then half.. the end may be near (IST DS).
09-19-2010, 02:34 PM   #174
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I use the Powergenix NiZn and work great for me for 8 months. I guess I get about 600 raw images wo flash. Good enough to use for 2-3 outtings. Get a backup set so your safe. Supposedly you get faster AF cuz of the extra voltage. But, it seems like to batteries work fine with the higher volts.
09-19-2010, 02:38 PM   #175
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Just wondering - I got a set of 4 eneloops after reading tons of praise on it. However, I've been using them for some while now, and it seems like they barely last ~150 shots before needing a charge now; I use a generic duracell charger. Any possible reasons why?
09-19-2010, 04:39 PM   #176
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Gold Peak are very good. GP NiMh 2700mah.
09-19-2010, 05:38 PM   #177
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QuoteOriginally posted by jaieger Quote
Just wondering - I got a set of 4 eneloops after reading tons of praise on it. However, I've been using them for some while now, and it seems like they barely last ~150 shots before needing a charge now; I use a generic duracell charger. Any possible reasons why?
I am not an expert by any means, but from what I've read and heard from those who know a heck a lot more about batteries than I do, I think the reason you're getting poor performance on those Eneloops is that you're not using a Sanyo Eneloop recharger. Get yourself a Sanyo NiMH recharger and see if that makes a difference.
09-19-2010, 05:59 PM   #178
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I second that. Eneloops need long charging with slow mAmps.
09-19-2010, 07:17 PM   #179
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Hmm, I see. Do you mean something like this? Eneloop Battery Charger with 4AA [Eneloop Battery Charger with 4AA] : Broadway Camera, Your Specialty Camera Store in Vancouver, Canada (this is like the only local store that'll sell em, so I hope so! )
09-19-2010, 08:54 PM   #180
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I use Sony for my KM...a friend also uses Sony for his K200D....don't know about KX....but can't see why they wouldn't work.
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