Battery Types
NiCD - The old technology
Depending on what you read, some say that the dreaded 'memory effect' no longer affects NiCDs, while others say it still does. Either way, it does not matter! Don't use NiCD in your camera! They do not offer the high current needed by the cameras, and they will wear down faster!
NiMH
These batteries were made for digital cameras! Recommendation #1: Use ONLY NiMH batteries (Nickle Metal Hydride) batteries. Yes, they are more expensive to start with (about $3 per battery), but they can be recharged 100's of times. Don't even try to use Alkaline batteries in your digi-cam. I used the 4 AA batteries provided with my Canon A20, and I got exactly 8 photos before they died. I tried fresh AA's and I got 10 more pictures.
NiMH offer an exceptional high power level needed by todays digicams, but they do not tend to hold a charge over time. In as little at 30 days, they may lose 50% of their charge. If you have extra batteries, rotate them though the charger every few days to keep them fresh.
NiMH batteries have come a long way in the past few years. Digital cameras as sophisticated computers, so they use a lot of juice. NiMH batteries are rated in milli-amper hours (mAh). This indicates how long the battery can last. A little as last year, the top end AA battery was rated at 1600 mAh. Now there are 1800 and 2100 mAh batteries, with can be a significant boost over some of the earlier 1400 mHa batteries.
What else can you use NiMH batteries for around your house? How about FRS radios, GPS receivers, CD players, MP3 players, toys, cassette players, and more!
Once again: If you have or are going to buy a digital camera, run, don't walk, and purchase two sets of AA NiMH batteries and a smart charger. You will be amazed at the HUNDREDs of photos you will take with them before needing to be recharged.
Get Two Sets of Batteries
Recommendation #2: Smart charges are smart, and can charge batteries in as little at 15 minutes to 24 hours, but with batteries so affordable, it make sense to by two sets of batteries (if you digicam take 4 AA batteries, buy 8), so that you can have a set charging and ready to go.
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