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Product Details

• Color: white
• Brand: Sanyo
• Model: SEC-HR3UTG-8BP
• Dimensions: 6.85" h x .86" w x 3.75" l,

Features

• eneloop 8 pack AA 2000 mAh Pre-Charged and Ready to use right out of the pack.
• Very slow self discharge maintains 85% residual capacity after 1 year of storage*and 70% residual capacity after 2 years of storage* Based on SANYO's simulation when stored at 20* C
• Greater Power and Better Performance in lower temp than Alkaline. Internal test results shows eneloop gives up to 4 times more shots when using a DSC than standard Alkaline and offers stable superior performance in low temp environment such as ski areas.
• Reused up to 1000 times* and no need to worry about memory effect,able to charge only the amount you need.*IEC 61951-2 Test Condition. Cycle life may differ because of conditions and applications.
• eneloop combines all the features of an alkaline battery (Ready to Use) with the benefits of Rechargeable (Reusable)

From the Manufacturer
Why Sanyo eneloop?

Sanyo eneloop rechargeables can replace an entire kitchen drawer's worth of dry cell batteries

You already know the benefits of using conventional rechargeable batteries. But Sanyo eneloop batteries have advantages over other rechargeables that put them a step ahead.

Sanyo eneloop batteries are an excellent choice for your rechargeables because:

• They can be used right after purchase
• They consistenly yield high performance
• They have a long shelf life with no loss of energy
• They can be used everywhere
• They are environmental friendly

Self-Discharge: Why Conventional Rechargeables Don't Cut It

Conventional rechargeable batteries have numerous advantages that make them great to use for your portable electronics. But they also come with certain disadvantages. After purchase, rechargeable batteries have to be charged before they can be used. And once charged, rechargeable batteries lose the stored energy rather fast. The charging takes quite long and rapid chargers are expensive. Not only that, but continuous charging or frequent charge to "top off" the lost energy (without complete discharge) can destroy the battery.

All these negative attributes have one root-cause: self discharge. Self-discharge means that a charged battery slowly discharges itself without any equipment consuming any current. This is the reason for rechargeable batteries being sold in a discharged state. And this is the reason that keeping charged batteries for some time did not make any sense. When you needed them, the energy was gone. Sanyo eneloop batteries have an extremely low rate of self-discharge, which means they hold their stored energy for a very long time--charge your batteries once and put them in your kitchen drawer, and over a year from now you'll still be able to use them right away, without needing to charge them again.

Under the Hood: How eneloop Controls Self-Discharge

How can the self-discharge in the eneloop be so reduced? The self-discharge of Ni-MH batteries is caused by three main reasons:

• The chemical decomposition of the cathode
• The natural disaggregation of the anode
• Impurities of the anode

The chemical decomposition of the cathode has been reduced substantially by the use of a new hydrogen-absorbing superlattice alloy. As an additional benefit the superlattice alloy increases the electrical capacity of the battery and reduces the internal resistance, which allows higher discharge currents than conventional rechargeables. Also, the anode has been strengthened by the improvement of the electrolyte composition, which reduces the natural decomposition by increasing the oxygen over-voltage.

This gives eneloop batteries a number of advantages over traditional alkaline batteries, including up to four times more power when used in a digital camera, high performance even at low temperatures (down to 23 degrees F) during your winter vacation, and a vast cost savings in the long run. The eneloop advantages are even more glaring when compared to typical NiMH batteries: not only are they ready for use right out of the box, but they generally last longer than most NiMH batteries (continuous and frequent recharging can destroy other NiMH models) and save both time and money (traditional NiMH charging is slow when you're in a hurry, while rapid chargers are expensive). All told, you can recharge eneloop batteries up to 1,000 times without experiencing a "memory effect"--just charge the amount you need and you're set.

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Customer Reviews

Great battery
My Pentax digital SLR uses AA battery. With this battery, I only need to charge it after 4-6 months. Yes, I am taking a lot of pictures. I love it so much I just bought more.

I hate single use batteries
As an engineer, I find it offensive that people actually sell single use batteries or design devices that require single use batteries and the fact that people buy single use cells drives me insane.

Stuff like digital cameras and flashes, cell phones (yeah, they used to use AAs a long time ago), remote controllers of all types, TOYS, flashlights. They should all use some type of rechargeable power because you use them a lot - you will be changing the batteries a lot.

Single-use batteries are expensive for that you get - the energy itself costs less than a penny. The label on the battery probably costs more than the actual energy is worth. Plus they are bad for the environment.

Unfortunately there really weren't any good alternatives to the single use Alkaline dry-cell. Lithium-ion/polymer is expensive, regular (non-Eneloop) Ni-MH leaked alot of energy overtime, and everything else was junk.

And then comes Sanyo with their advanced Ni-MH technology and they choose to market their stuff as "pre-charged". C'mon. That's not even 1/10th of what these batteries are.

These batteries are high-current, making them great in flashes and digital cameras. They are low-discharge so you can use them in devices that previously only made sense with alkalines, like tv remote controls. They also have a very high power density - so they hold more juice that a regular alkaline. And you can recharge them up to 1000 times.

Want a great comparison that most of you guys can pull off? Use the Eneloops in one of your Wii-controllers. Then use some (ack!) Alkalines in the other controller. My fiancee and I play the Wii constantly. Alkalines last like 4-6 weeks depending on what we are playing. I charged up some Eneloops and put them in one of the Wii-trollers like 3 months ago and they are still going. Still at all power bars according to the Wii. Incredible.

Slightly disappointed
No matter how long I leave them charging, it seems that I just can't break 80% 'charged'. The highest I've squeezed out of them is 79%, but average about 74% according to the Apple wireless keyboard I put them in. Am I doing something wrong? Is using the keyboard's built in gauge not an accurate means of testing "juice"? I don't expect 100%, but a little higher wouldn't hurt.

It said in the manual, if I understood correctly, not to plug in the charger upside down, or it will prematurely end the charging period. Mine isn't plugged in upside down, but on its side (all of the sockets in my apartment were installed that way). Could that be a problem?

I don't know - maybe this is normal. This is my first experience with battery rechargers.