Best charger/backup batteries for iPhone 4

[whofeelsitknows]

Has anyone tried the Zagg Sparq?

With a 50% off code, it's like $50.

 

[vnle]

HyperMac

I have this battery and it's working very well. Very nice and compact design!

http://www.hypershop.com/HyperMac-Nano-1800mAh-Battery-for-Apple-iPhone-iPod-s/167.htm

 

[wattsja]

Best portable (non-case) one I have ever used. Can charge 3 devices at once and can even charge the iPad (from 0 to full)!

 

[h1r0ll3r]

My satechi one came. Its beautiful. It comes with a charging wire (not pictured).

Never heard of this brand before
Never ever seen this before.
But I just ordered one.
I just had to for some reason.

 

[iMaconApple]

speaking of batts i was ordering more batts for my rc heli and they sell back up batts here too forgot about it..might grab me that 4500mah one but i always charge my iphone 4 at work and car im always having power on my batt when im out so i think i might hold up on a back up batt..

but heres the link if you want they have solar back up too but i assume you can charge 1 1/2 times only with that size capacity..5400mah is the way
http://www.hobbypartz.com/ip3gpoch.html

 

[IrishVixen]

I have this one:

http://www.newtrent.com/IMP500-3G-3Gs-iPhone-iTouch-external-battery-p/imp500p.htm

Which is strong enough to charge more than just my phone. I did notice they have 2 new models:

http://www.newtrent.com/IMP880P-IPhone-External-battery-p/imp880p.htm
http://www.newtrent.com/IMP880-IPhone-External-battery-p/imp880.htm

that have even MORE power then the one I already have. They have fast shipping and the device works as expected.

I also bought the IMP500, and I'm very pleased with it--even charges the iPad, though as with charging that device from a computer USB, it won't appear to actually charge with the screen on. I've tested it with the screen off and it's fine.

With the iPhone 4, it's just amazing. Mine goes up about 10% every 8 minutes or so.

 

[9adiamonds]

UPDATE

I've tested the Mophie Juice Pack Reserve and have found these results:

Charging my iPhone 4 took about 30 mins to complete. Giving the phone a 40% power boost.

Recharging the Mophie from completely drained to full took 1.5-2 hrs to complete.

I hope this helps anyone looking for a backup battery for their iPhone. I'm gonna stick with this one for now.

====
Does this fit when there is a case on the iPhone? I tried the Kensington Mini Battery Extender and Charger. Loved the compact size. Had to take case on in order to charge the iPhone.

 

[suzanne5ive]

====
Does this fit when there is a case on the iPhone? I tried the Kensington Mini Battery Extender and Charger. Loved the compact size. Had to take case on in order to charge the iPhone.

After dropping my iPhone 4 with only a bumper on it and shattering my front screen (which I luckily found a place that could replace it), I've switched to an Otterbox Defender case. The Mophie will not work with this case, the opening is too small to accommodate it. So just a warning to anyone. Check to make sure it'll work with the case you have before buying it. I just now keep a charging cable on me at all times.

 

[charlesdayton]

Does any one knows if the PowerGen is any good? It looks more compact than the satechi.

http://www.amazon.com/PowerGen-Exte...6?s=electronics&ie=UTF8&qid=1333971551&sr=1-6

I was also cheking out the New Trent, but looks a bit bulky:

http://www.amazon.com/New-Trent-IMP...?s=electronics&ie=UTF8&qid=1333971551&sr=1-10


I wish these batteries had measurements in the description.

 

[d3v1l.cr0]

What do you guys think about this extra battery thing:
http://www.ebay.com/itm/120850059374?_trksid=p5197.c0.m619#ht_2444wt_1010

It has a great capacity (1900mAh), I'm just wondering is it safe enough to use? I wouldn't want to mess up my iPhone 4s with it. Could come in handy, as the capacity of the phone is 1440mAh so it adds quite a lot. What do you guys think? Has anyone tested it? Any review online?

Thanks

 

[Zmanbaseball2]

Best charger/backup batteries for iPhone 4

What do you guys think about this extra battery thing:

http://www.ebay.com/itm/120850059374?_trksid=p5197.c0.m619#ht_2444wt_1010



It has a great capacity (1900mAh), I'm just wondering is it safe enough to use? I wouldn't want to mess up my iPhone 4s with it. Could come in handy, as the capacity of the phone is 1440mAh so it adds quite a lot. What do you guys think? Has anyone tested it? Any review online?



Thanks

EDIT: did not realize this thread was so old. My bad.

I would recommend a battery pack that is branded like Anker and Ravpower.
For a full charge I recommend:
RAVPower® Luster 3000mAh External Battery Pack Portable Charger Lip... http://www.amazon.com/dp/B00APFQ5VS/ref=cm_sw_r_udp_awd_yh2-sb1PJT33T