safe to use cellboost products with iPhone?

[iphone62907]

they make disposable and rechargable battery things for iPods, but I can use it safely with my iPhone, right? Also there is a thing that you plug into the iPod and it charges it using triple A batteries, can I use that with my iphone? Will either of those overcharge the iPhone battery? Thanks

[iphone62907]

here are the things i am talking about

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=006

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=009

http://cgi.ebay.com/NEW-Cellboost-Ba...QQcmdZViewItem

thanks

[Youngbinks]

I use the Tune Juice product from Apple for both my iPod and iPhone with no problem, so I would imagine these would work as well. It says that it is compatible with the iPhone so I'd give it a try.

[iphone62907]

yeah but something like this is nice

[iphone62907]

my question is:
is this safe for my iphone?
will it overcharge my batter?
if my battery on my phone is out, can i just plug this in and use my iphone, just like it would be if it were plugged into the wall? i can use and charge at the same time?
thanks

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=006

[Youngbinks]

You should be able to plug your dead iPhone into one of the above and have it work and partially charge with no problem. It will likely charge if it's turned off but it will be sustained on if you're wanting to use it and probably will not charge very much.