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This is the second time I've bought these batteries. The first batch are about 2-3 years old and won't hold a charge at all. These new batteries do not hold a charge for as long as the first batch; maybe 2 days. I do not recommend these batteries.
Do not buy these batteries for a camera. They state that they will work better than regular batteries, but after I charged them they only took 5 or 6 pictures. I recharged them and the same thing happened. Maybe I just received bad batteries, but I would rate them as junk.
I have bought several packs of these batteries and have seven batteries that have failed so far. They are good to start with but after a couple of charges some of them seem to fail. I am using a La Crosse BC-900 charger.
This Sony battery was the last one. He repeated the capacity test mutiple times and the clear winner was the Energizer NH15BP-4 and the Duracell came in second.
He conducted two tests on Duracell, Sony, Energizer and Lenmar: 1. Long term storage test where the batteries were fully charged and stored for two weeks before measuring the voltage.
My son's school science project this year was to test a set of rechargeable batteries. The first test was inconclusive.
2. Capacity test where randomly selected two batteries were fully charged and put on a regular flashlight until a complete discharge happened.
BTW, the manufacture's claim on the overall capacity was not even close to the measured capacity. It performed consistenly without being overcharged, but the overall capacity was not very good.
I bought these batteries when I bought the Sony charger. The charger is cool, the batteries are the worse I've ever had. Even in a clock, they last about 3 days on a full charge. What's the deal with that.
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