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Because I want to save the utility fee, I did not turn on the light when being in bathroom for a short time, like pee, wash hands and face, except taking a shower. Although people said ,in the battery feild, Sanyo is better than others, I think Energizer is also a good one. I put the battery in my flashlight in bathroom. Once charging the batteries, it takes for 2.5-3 weeks at least; everyday I use the flashlight, totally, for around 1 hour. Therefore I think it is a good deal.
I got several packs of these batteries in different sizes, and a charger recently and have just thrown them all out. They are utterly worthless; they don't hold a charge. And stores don't take returns on batteries.
I bought these for my Canon digital camera (A710-IS) and was immediately disappointed to find out they did not support both 110V and 240V input voltage. They would hold a charge for maybe a few days then be dead, even with no use. To counter this, I immediately bought some Sony batteries with the same specs that did have a 110-240V charger. I used these 2 sets of batteries through many trips.After 2 years, the Energizer batteries simply stopped working. The Sony batteries are still lasting for hundreds of photographs with each charge.I would not recommend these batteries simply because you'll need new ones within 2 years. Buy some Sony ones instead.
They were not used over at least 6 months or longer to see if the good performance can be maintained, but I am sold on this battery. 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. I will only buy them from now once my other batteries die.
I don't think you can beat the Energizer battery. It's a great choice for all your battery needs. Always dependable and long-lasting with every new charge.
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