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Rayovac USB Battery Charger with 2 x AA 2700 mAh Battries

by Rayovac

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Most Helpful Customer Reviews on (beta) 9 reviews
12 of 12 people found the following review helpful
Primitive USB charger + low-capacity batteries 26 May 2010
By NLee the Engineer - Published on
This USB Battery Charger package (RAYPS19) is a poor value, becuase:

- The Rayovac PS19 USB charger is extremely primitive. It simply charges at a fixed current (200mA for AA, 90mA for AAA) FOREVER! The two green LED indicators do not go off when batteries are fully charged. It is up to the user to remove those batteries after a certain number of hours, depending on the estimated capacity of the cells.

- The two rechargeable batteries are the Rayovac 'Everyday-Use' AA cells. This is the cheapest NiMH cell offered by Rayovac. Its capacity is very low at just 1400-1500mAh.

If you are looking for a better USB charger package, I recommend the Sanyo eneloop USB Charger. It is available at similar cost, but offers the following advantages:

- The Sanyo MDU01S is a smart charger, meaning that it stops charging when each cell is full. Its charge time is much shorter, because the charging current is higher (850mA for one cell, 450mA each for two cells). Furthermore, it comes with a short USB cable to plug into your computer's USB port. This is much better than having a bulky USB charger sticking out from your computer.

- The Sanyo eneloop AA cells have a higher capacity of 2000mAh. More importantly, they are the low-self-discharge type. That makes them especially suitable for low-drain appliances such as wireless mouse, and also for high-drain appliances (such as digital cameras) that are used intermittently.

[Update on April 30, 2013]
Sanyo (or rather Panasonic) has discontinued the excellent MDU01S, so the price of dwindling inventory has skyrocketed. Fortunately, I found another charger with exactly the same electrical spec:
GP Recyko 2 Hour USB Charger with 2 AA NiMh Pre-Charged Rechargeable Batteries
As of right now, it is the only Smart USB charger I can recommend.
2 of 2 people found the following review helpful
Horrible product -- only buy if you want to torture your batteries 19 Nov 2012
By Eric - Published on
The Rayovac PS19 is so bad I was prompted to write my first review on Amazon. In the age of cheap electronics, how hard is it to detect the battery chemistry and design in a shut off for a charged battery? It isn't hard, yet Rayovac packaged up some 1980's technology in a nice 2000's package so people can happily overcharge all their batteries and destroy their life span. Thanks for this piece of trash Rayovac.
2 of 2 people found the following review helpful
how complicated does it need to be? 14 Mar 2012
By Solar Critical - Published on
Disclaimer: I have NOT read the manual. In all fairness, instructions should be simple enough to emboss/print/injection-mould on the device. I got my first battery charger when I was probably 8. I have dozens of higher voltage battery systems for tools, cameras, etc. They are all simple and share a more or less consistant pattern: when the battery goes on charge, lights blink slowly. When it is fully charged, light goes solid or goes out. After 2 days connected to my Mac, there is no change in the light status- solid all the time. They are warm. I have taken them out and put them back in my Apple Magic Mouse (which, for the moment, seems happy).

You'd think the that connection to a USB port would allow some more advanced approaches besides "wait until the owner decided they have been warm enough for long enough". I haven't read reviews for the Apple designed charger, but generally they pull off the sort of engineering that makes stuff like this product seem like it was turned in to meet a deadline... not once it had met its design goals, which is how Cupertino does it.
1 of 1 people found the following review helpful
Time is short, don't waste it charging these cheap batteries 11 Dec 2012
By lavasmokechile - Published on
In retrospect, I should have bought a few packs of cheap batteries instead of thinking I was going to save money by buying "these" rechargeable batteries. The charger doesn't make sense. If the battery is drained or charged, the lights on the USB port are constantly lit and don't change colors to give you a clue.

The old adage applies . . . YOU GET WHAT YOU PAY FOR!!!
Affordable convenient & effective with a couple of minor drawbacks 27 Nov 2013
By Malagent - Published on
In the year and a half of service so far, this has performed as well or better than expected. It is quite convenient to use USB to charge the batteries, especially for a laptop and wireless mouse combo. Few things are as frustrating as the confused last hours of battery life in a device like that!

The very minor drawbacks include the width of the charger at the USB port does not allow it to be used in tight spaces or next to another device in ports that are near each other. Also, the batteries are not real secure if this is used in a mobile setting.

Since it is powered by USB, it can be used just about anywhere. At home I use an old high power USB hub to power this, my cell phone, and ecigs. In the vehicle I use a cigar plug to USB adapter. Everywhere in between I use the laptop USB ports if needed.
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