Customer Rating: 
Summary: Best battery charger
Comment: I got about 20 batteries, both AA and AAA Duracell brand. I bought the charger with the batteries. Problems with original charger:
- Charges two or four batteries at a time only
- Can't mix AA and AAA batteries
- Seems to charge batteries uneven
- Overheat batteries, decrease their life
- Can't monitor health of battery
This charger solved all my problems
- Charge one, two, three or four, AA or AAA, any combination, any time, any order, any charge current !!
- Monitor voltage when battery inserted, can check how deeply discharged the battery was.
- Voltage function also can also be monitor of battery health. For example, one device that takes two batteries in series, both should discharge evenly if they are same capacity and show the same voltage when inserted in charger. Found some end-of-life batteries that were deeply discharged while the other was holding significant charge.
- Monitor battery health with charge time: same idea, take two batteries from same device, if one takes twice or more time to charge, it means that battery might have a problem.
The capability of checking battery life was worth every $ of this charger. My mp3, flashlights, toothbrush and any other battery operated devices run with fully charged healthy batteries all the time. No guessing, no cursing at mp3 dying at midday, no throwing away good batteries. Highly recommended product!
Customer Rating:
Summary: If you use rechargeable batteries then you need this!
Comment: Truly a splendid product!
First off the bundle is quite generous. It comes with various adapters, 4 batteries and a handy carrying pouch.
I use a lot of different types of batteries with this charger and you can mix and match since each battery slot has it's own power rail and is controlled independently from the others.
So you could be charging a AAA in one, a high capacity in another, and refreshing 2 other batteries all at the same time.
The device is easy to use, but does require you to read the manual to understand the wealth of features it has.
Very highly recommended!
Customer Rating:
Summary: CAT Scan for your batteries
Comment: A battery is a pretty inscrutable item. It's got power or it doesn't. But there are stages of discharge and potential rates of charge and maximum levels of charge which can be realized if the battery is prepared correctly. This charger tells you all sorts of interesting things about your batteries. And one of the best things is that out of four identical batteries, it will tell you which one(s) are null/dead. That is great. It's a drag to put batteries through a charging cycle and think that they are ready for some work and then they last 15 minutes because one is dead. But which one? The BC-900 tells you the moment you put the batteries in to charge or whatever process you choose.
It definitely pays to read the informative instruction book with this item. I was a little put off at first as I didn't want to think that much about charging batteries. But it pays to understand what it will do. This is a battery charger that has a variety of modes and using the Discharge and Refresh modes is important for reaching the potential of your batteries. And the variety of current charge rates means you don't have to fry the batteries to get them charged. Slow and cool is the way to go.
I've had mine for about two months and I wish I'd had it much sooner. I tossed three chargers and at least as much $$ as I spent on this one. Plus I bought some more batteries thinking the ones I had were pooped out but they weren't at all. They were fine. They just needed to be "refreshed" which can take a few days if you do it slow but the process really pumps them back up. I'm just using mine for AA batteries for my camera and flash.
If you're going to spend the day taking pictures in the boonies, it's very nice to have some confidence that you're not hauling around dead weight. The BC-900 will make that as possible as a battery charger can.
I like it.
Customer Rating:
Summary: The charger really DOES make a difference!
Comment: Wow, what a difference a charger makes. I use eneloup batteries for my off camera flash units --the Nikon SB 800 and Nikon SB 600 -- both really eat up battery energy. Since switching from my cheaper charger to this one, the battery life is really notably extended. Much less aggravation than with the old, cheap charger. Sometimes you really do get what you pay for
Customer Rating:
Summary: La Crosse Technology BC-900 AlphaPower Battery Charger
Comment: Great product. Pays for itself with better battery life/performance. Too bad there is not a model for C/D/9 volt batteries.
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