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01/05/2006 05:23:52 PM · #1 |
Who makes the best? rechargable or alkaline? does energizer and duracell make the top alkalines?
I need to pickup some more but im not sure about rechargable yet. Are there top rechargables like top alkalines? anyone tried more then one brand?
I got 2 packs of AAA last week a set of the energizer titanium and a pack of sears brand. I put them in my camera and the sears brand pooped out after about 4 shots. I checked them with my battery meter and they had good voltage but they couldnt handle any kind of a load. The energizers seems to handle the load better but not by much. I havnt really messed with NIMH much, ive messed with nicads when racing R/C cars they hold up good.
Any input would be great. any sugestions, brands, links.
Thanks! |
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01/05/2006 05:31:05 PM · #2 |
I have 16 energizer AA rechargeables (NiMH) 2500 mah batteries that I bought at Sam's Club. The 8-packs were about $20 each and I use them in my 550ex flash units. They last as long or longer than normal alkaline batteries. I'm very pleased with them and woudln't hesitate to suggest that you try them as well.
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01/05/2006 05:31:25 PM · #3 |
I'd go for the rechargables. In the long run they will save you a lot. Remember to get two sets, while you charge the first you can shoot with the second.
Message edited by author 2006-01-05 17:32:41. |
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01/05/2006 05:32:28 PM · #4 |
Go get some Nimh recharables - walmart had 4 for $6.50 last time i needed some. they last essentially forever (1000 charges - you charge twice a week that's 10 years)
You can usually get a kit with a charger for $20-25, and then a second set for $7. Why buy 4AAs for $5 and then throw them away.
maha energy / powerex batteries are very good and they have fast chargers, car adapters and more.
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01/05/2006 05:55:10 PM · #5 |
| two sets? That's it? I have enough rechargable batteries for about eight sets right now. Unfortunately a lot of those are now plugged into other things and aren't available for my camera anymore. |
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01/05/2006 06:03:10 PM · #6 |
Take a look at //www.imaging-resource.com/ACCS/BATTS/BATTS.HTM for one person's look at rechargeable batteries.
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01/05/2006 06:04:23 PM · #7 |
The higher the maH the better. Remember that cold weather wipes out batteries pretty quick. Keep them as close to the body as possible and they should be good.
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01/05/2006 06:06:41 PM · #8 |
Originally posted by NathanW:
two sets? That's it? I have enough rechargable batteries for about eight sets right now. Unfortunately a lot of those are now plugged into other things and aren't available for my camera anymore. |
I have 12 sets not including what is in the flash, camera, etc. Damn the bag is heavy :P
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01/05/2006 06:08:40 PM · #9 |
| Well I meant "minimum". Eight should be fine. :D |
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01/05/2006 06:09:08 PM · #10 |
Alkalines are the last possible batteries you should use as they don't last nearly as long as NiMh, but definitely good that they are an option in an emergency.
Message edited by author 2006-01-05 18:09:53. |
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01/05/2006 11:50:43 PM · #11 |
Originally posted by faidoi:
The higher the maH the better. Remember that cold weather wipes out batteries pretty quick. Keep them as close to the body as possible and they should be good. |
Why is that? how does the cold effect them? |
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01/06/2006 12:02:29 AM · #12 |
Originally posted by BowerR64:
Originally posted by faidoi:
The higher the maH the better. Remember that cold weather wipes out batteries pretty quick. Keep them as close to the body as possible and they should be good. |
Why is that? how does the cold effect them? |
Fundamental law of electronics. Resistance decreases with increase in temperature. Less resistance means less energy converted to useless heat. Conversely, lower temperature increases resistance, causing more enery to be converted to converted to useless heat.
Analogy, brushing your knuckles lighty (low resistance) on a rug doesn't create much heat, while forcing your knuckles across the carpet hard gives you rugburn and your knuckles don't last too long. ;)
Aside from that, those little electrolytes in the bateries don't want to give up their electrons at lower temperatures, either.
Edit: missed something.
Message edited by author 2006-01-06 00:05:24. |
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01/06/2006 03:30:02 PM · #13 |
I use to race R/C cars competitivly and heat was a no no. Heat caused all kinds of problems including batteries. In the early stages of NIMH they would somtimes only run one or 2 times and croak from heat. The batteries would build a gas inside and vent then the chemicals inside would dry up. There is a spring loaded seal under the button and it vents under pressure. Overcharging is one way to vent the battery or drawing to many amps from it to quickly is another.
One advantage when charging and discharging the cells was to keep them cool so the pressure was low and it packed more energy into the battery before the gasses would build and rob that room.
Im in a wheelchair and i sit on an air cushon, when its hot outside my cushon will expand and the seat will be more firm. When its cold it feels flat.
These are just things that ive noticed but i dont know why it happens. |
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01/06/2006 03:41:20 PM · #14 |
Avoid Alkaline batteries
Few people are aware of the specifics of battery technology. Alkaline batteries do poorly in digital cameras (particularly those which use the flash). They can't supply the high current necessary. The result is the batter is rendered unusable while still at 80%+ charge.
In fact, you can take those same Alkaline batteries and put them in your remotes or wall clocks and have them last a year or more.
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It's recommended you use either NiMH or Lithium batteries. These provide more current and faster delivery throughout the entire life of the battery. (As opposed to the alkaline which can only deliver it in the beginning of their lives.)
- Saj |
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01/06/2006 09:11:24 PM · #15 |
Thats what ive been doing when the batteries die in the camera they go into somthing else. At one time i started to think the people who design these electronics design them around batteries and design them to eat batteries like candy. I know as the battery loses charge the voltage slowly drops and i think they have set them up to run on the maximum voltage that the 2 fresh batteries total. If they drop below that minimum voltage the camera stops working properly.
When i raced the R/C cars the best battery was a nicad 2400mah and these are the size of "C" batteries. When i went to walmart last night and looked at the batteries they say they are 2500mah and it just doesnt seem possible in such a small container. The R/C cars pull about 20 amps for 6 minutes this is about the most extreme amp draw that i know of. Some times the packs can come out of the car so hot you cant hold them.
I hope these hold up, i use to use rechargable sanyo AAs but they would bairly last a full day of racing and i wound up going back to the akaline. I tried the energizer renewel they didnt seem to good either. They were ok for the first 5 or so charges then they dropped off like all the rest.
Nicads have no shelf life. If you charge them you need to run them down that day or the next day. They wont sit for more then a few days with a charge before they just go dead on their own.
I think i spent $50. on batteries last night. The 1 hour charger with a 4 pack of 2050 mah, and a 4 pack of 2500s i guess about 6 packs of alkalines would run about that much so if i can get about 5 charges out of em then i saved some money. |
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