External backup battery

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I'm looking for a backup battery. Has anyone come across any that have enough juice to put a good charge on the nook? I know those little 400mah batteries can charge the nook but how long will 400mah last? I'm looking for something that can give it a 50%+ charge

This what you are looking for? That would get you about 1.5 charges.

This would give you about 1 charge.

The Zagg one would be perfect but its $100! I dont want to spend over $50 guess I should have said that.

I will look into the other one you posted thanks

EDIT: The energizer one looks great!! I am probably going to order one. Thanks a lot!

I didn't notice an amp output on the energizer. NC is looking for 1900 mA for proper charging. That first gizmo is dead perfect but 100 beans is a bit outside my budget too. I have a 4400 mah battery that does 1000 mA output- i wonder if that would add a few hours to my NC? I take very long flights often.

Sent from my Nookcolor

Originally Posted by markiejones

I didn't notice an amp output on the energizer. NC is looking for 1900 mA for proper charging. That first gizmo is dead perfect but 100 beans is a bit outside my budget too. I have a 4400 mah battery that does 1000 mA output- i wonder if that would add a few hours to my NC? I take very long flights often.

Sent from my Nookcolor

If I remember right The stock nook color charger is rated at 1.9A which is 1950mah. The energizer website lists the battery linked above as 1750mah which should work great.

Check out Brunton Chargers:

http://www.rei.com/category/40006509

I went with this unit, http://www.amazon.com/gp/product/B00...ef=oss_product

It's under $40 and provides a full charge.

What is the recommended way to test the time-to-charge? There are two issues that I see in capturing this data.

1) You really shouldn't run the thing dry - I mean it won't even boot with the power adapter plugged in until it has a little juice in the battery. I suppose youl could to drain it to 25% then charge from there. Then add 25% to whatever your time-to-full is?

2) how can you tell how long this thing takes to charge if you're asleep. Is there a log file which gets updated with charging events? Or some specific app for such things?

A little big but if you want to keep your mobile devices running for a long time try this:

http://www.amazon.com/gp/product/B00...ef=oss_product

It charges my NC and G2 3 times each and change. Especially useful when using the wireless tethering on the G2 to keep the NC online.

I've been running my NC entirely from a Tekkeon MyPower MP3450 with the MP3450-10 add-on pack for two full days of heavy usage (probably around 18 hours or so of actual use) and the MyPower is only drained down half-way while keeping the NC topped off at 100%. I'll be back with an update in another couple of days when I expect it to be empty.

Edit: Yep, I got four days of heavy usage (probably equivalent to four full recharges of the NC) from the Tekkeon pack. I bought it to keep my laptop running on long flights, but it's nice to know I'll be able to read if the power goes out for a few days.