eneloop AA with USB Charger, 1800 cycle, Ni-MH Pre-Charged Rechargeable Batteries, 2 Pack (Discontinued by Manufacturer)

UPDATE (4/15): Still works and I see the price has went up nearly $40?- So thought I would add that it has been going on a year and this items still works completely fine using it for my iMac mouse and keyboard batteries. One thing I can say that I really like is these batteries charge to full or long lasting very quickly. It seems like within an 30 minutes - an hour that they are at full charge for the last year consistently. Paying 40$ today would still be worth it.PREVIOUS (3/14)In short I was skeptical about these and now... I am satisfied.I can say in using these solely for my iMac mouse that these batteries die quicker.The first day I used them they said they were charged and started dying extremely fast. But that could be perhaps they needed a full charge coming from the shipping facility. After a full charge these batteries hold up very well. I do think they die just a little bit faster than some Dollar General batteries I picked up. But being able to recharge them makes all the needed difference.I would say on consistent heavy mac use these batteries will last with no recharging about 4-5 (maybe 6) days. That is with about 15 hours of imac mouse use consistently every day and turning the mouse off when sleep. So you are looking at about 60-90 hours before a needed recharge. If your usage is anything less then of course this time before a recharge would increase.I have been using these batteries for about 3 weeks and I am definitely satisfied and would definitely buy again.The charged is fairly solid and works. Oh, I do wish the usb battery charge wouldn't have a huge blue blinking light to indicate when it is charging and when the batteries are done charging.At night when these charger is running I have to lay the light face down on a table because the light is that bright at night. It's noticeable. I would rather have this just a simple low light indicator than a big strobe light, haha.

To be totally clear here, I'd give this 4.5 stars if I could. The downgrade is just for incomplete instructions.In brief, I bought the Sanyo AA USB Charger (discontinued - so get one while you can) to go with the Instapark 10 watt Solar Charger I ordered at the same time. For those who have asked, yes, they work very well together.If you look at the unit, right above the battery slots is that flat area. Right BEHIND that plastic is the indicator light. I think this was really smart on Sanyo's part. Why drill a hole in the casing and make a special mount to hold the indicator light when it is bright enough to shine thru the plastic? Smart indeed.The instructions tell you when the blue light is flashing slowly that it is charging, if it is flashing fast then there is something wrong with one of the batteries you put in it, and if it burns steady then charging is done. What it does NOT tell you is when the light flashes long, short, long, short, that it means the charger is not getting the full amount of electricity it wants. This was worked out by having it attached to the Instapark Solar Charger and moving it in and out of shadows, as well as switching it between the 1 amp port and the 2 amp port. Most people I know do not like to be surprised like that...The flip down bar to allow aaa battery charging is nice, personally. For some reason I prefer it over other chargers. I also like that the cord is short, and there is a built in dock to hold the USB end.Other than that one issue I am super happy that I spent the money for this. Not everything is USB compatible, and many things still need aa & aaa batteries: flashlights, bike lights, and so on. It bites to see products like this discontinued. Anyway, it does it's one job well. It charges batteries.

This package ( SANYO NEW 1500 eneloop 2-AA Ni-MH Pre-Charged Rechargeable Batteries w/ USB Charger ) contains two second-generation "1500 cycles" eneloop cells, plus the Sanyo MDU01S USB-powered battery charger. I have already reviewed the new eneloop cells several times elsewhere (for example, see the product page for  SANYO NEW 1500 eneloop 8 Pack AA ), so here I'll focus on the USB charger only.Unlike a stand-alone charger (which needs to be connected to an AC outlet), the MDU01S draws its power from the USB port of your laptop or PC. That's why the charger can be made so tiny, and you never have to search for yet another AC outlet. But you must make sure that the USB port is version 2.0 (which means it can supply up to 500mA) or later. Very old computers with USB 1.0 or 1.1 ports cannot be used. Also you should not plug it into an unpowered USB hub.The MDU01S is a very well-designed USB charger. It offers several advantages over other similar products (such as the  Rayovac USB Charger ):- You can use it to recharge either 1 or 2 cells, whereas cheaper chargers often force you to charge in pairs only.- It is a 'smart' charger that monitors the status of each cell independently, so there is no danger of over-charging the cell. Cheaper chargers usually have no charge-termination logic. They either charge at a low current forever, or rely on simple timer to stop charging.- The charge time is relatively short for a USB-powered charger: roughly 2.5 hours for one AA cell, 5 hours for two.Some additional notes about this charger:- You can use it to recharge any brands of NiMH cells, not just Sanyo eneloop.- You can charge either 1-2 AA cells, or 1-2 AAA cells. But you cannot do 1x AA plus 1x AAA at the same time.- Charging current depends on the number of batteries. If you put just one cell in it, the charging current is 850mA. That means it takes about 2.5 hours to fully recharge one 2000mAh eneloop AA cell. But if you put two cells in it, the current drops to 450mA each. So now it takes about 5 hours to fully recharge 2 eneloop AA cells.My only reservation about this package is that: currently there is an older package ( Sanyo Eneloop 2-AA NiMH Pre-Charged Rechargeable Batteries with USB Charger ) available at much lower cost. Both packages contain the same USB charger, just that the older package contains two first-generation eneloop AA cells. So essentially you're paying extra only for the two second-gen eneloop cells. I have tested both old and new eneloop cells, and found them to be almost identical electrically. In real life, most people will probably never experience the advertised benefits of new eneloop (such as 1500 cycles vs. 1000 cycles) anyway. Therefore in my opinion, the older package is actually a better value.[Update on April 30, 2012]As of recently, majority of the 2nd-gen (1500-cycle) eneloop packages are priced lower than their 1st-gen counterparts. So there's absolutely no reason not to go for the newer version now.I like to add that all my 1st-gen eneloop cells are still working great. I just re-tested some eneloop AA cells which were in service for 4-5 years, and they still have 90-95% of their original capacities.

I have a Coleman 7.5 watt solar panel that I use with this charger.They work very well together. The charger fits in solar panel pouch.On a clear sunny day I believe this combination out performs my house charger.Delivery was on time as advertised. It's a very well engineered product in terms of materials used and the charging logic.

Just as expected.