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Here are my results from my latest trial:

Charge 1 = From 22% to 100%
Charge 2 = From 16% to 100%
Charge 3 = From 18% to 100%
Charge 4 = From 15% to 33%

No 4 charges here...
Odd. Is your battery newly bought? I strongly suggest to contact them about that. Do you play games while it's charging?
 
Just received mine today!!! So far so good but haven't been able to check how many full charges I get. I will keep you guys posted. Also 1 thing, is it better to use the supplied USB cable or the Apple one?
 
Just received mine today!!! So far so good but haven't been able to check how many full charges I get. I will keep you guys posted. Also 1 thing, is it better to use the supplied USB cable or the Apple one?

I use the supplied USB cable, cause you can retract them if not used. I only use the Apple ones when I sync my iPhone.
 
I use the supplied USB cable, cause you can retract them if not used. I only use the Apple ones when I sync my iPhone.

Ah ok gotcha. Last question, is it safe to leave it charging over the night? Like right now I'm going to bed but it's like 3/4 charged. Is it ok if I leave it charging till tomorrow?
 
Ok everybody here are my results! I never charged the Imax or iPhone with anything else during this test.

Start 33% to 100%
Starr 64% to 91%
Start 6% to 100%
Start 37% to 100% (While Listening to Slacker Radio)
Start 33% to 78% (While Listening to Slacker Radio)

It went out of battery there at 78%. I got 2 full days of usage without having to charge it! I am a happy customer :)
 
Ah ok gotcha. Last question, is it safe to leave it charging over the night? Like right now I'm going to bed but it's like 3/4 charged. Is it ok if I leave it charging till tomorrow?

When I asked them that question before, they said it is safe, the current from the battery to the iPhone when fully charged doesn't harm the iPhone at all

And good to hear you're getting great results
 
Imaxpower imp880

Got this last week here are my results after fully charging the imaxpower imp 880:

1. 22 > 100
2. 18 > 95
3. 24 > 100
4. 17 > 100
5. 36 > 100
6. 21 > 100
7. 29 > 100
8. 34 > 56

This amounts to 5.5 full charges, during a couple of the charges I was surfing the web and playing games.
 
Loving my IMAX but is there a case or something for it? I've dropped it 2 times (nasty drops) and luckily it's still working fine.
 
Loving my IMAX but is there a case or something for it? I've dropped it 2 times (nasty drops) and luckily it's still working fine.

That was my main concern before (when I first bought it) but now I've realized that it's quite sturdy so I left it as it is. A case for my iPhone is enough, which I haven't dropped; battery without a case - dropped numerous times :p
 
Does anyone know where I can still purchase the Imax Battery Extender?

It's showing "out of stock" on their website :(
 
IMP500 charge my ipad and iphone4

After 20 hours' waiting in the line, I finally got my iphone 4. I am glad to see IMP500 work fine with iphone4. I got a iPad adapter from newtrent.com, not I can use IMP500 to charge iPad.
 
Imp1000/imp880e

Luckily I was able to make the purchase from Amazon when they just announced their special promotion when it was IMP1000, now its known as IMP880E. I have nothing but great things to say. I already own the IMP880 but this one kicks it up a notch so my iPad is charged to full capacity.
It absolutely does what it says it will do. The website www.newtrent.com lets you preorder now as I think they will get their next shipment by the 27th of this month. So go for it!
 
After 20 hours' waiting in the line, I finally got my iphone 4. I am glad to see IMP500 work fine with iphone4. I got a iPad adapter from newtrent.com, not I can use IMP500 to charge iPad.

The IMP500 works fine with an iPad, good for about a 50% charge on that device. Be sure to use the provided cable and adapter when charging an iPad though, or you'll get a charging error. Still trickle charges when the screen is off though, even if it says it doesn't when used with any cable other than the one from NewTrent.

The IMP500 is a terrific charger. I wouldn't hesitate to pick up the IMP880E (or 1000, whatever) if I needed a bigger boost.
 
A little confused by the name but it works great

I was a little confused by the name IMP880E and I will prefer to have a name like IMP1000. The new one looks very nice. The capacity is 11000mAh and it charged my iphone more than 7 times. This charger can charge my iPad more than one time.
 
Imp880e/1000

Yeah, I agree the name doesn't really add to their story much but cool product though. I want them to start making a charger slash car mount holder for their next generation. I'm done using my cup holders
 
do not buy the imp 880

When I first found the IMP880, it seems to have a lot of capacity, but I read a lot of review of the product not working properly. I decided to give a try anyways. BAD IDEA. The product doesn't work as they claim! It's suppose to be able to charge my Iphone at least 5 times, but it seems to be able to only charge it 2 times fully and the third time up to 90% before it dies. I've done several test charges on this with the same results. I highly recommend that you do not purchase this product as, although sometimes it works, it seems that they are sending out too many defective products and that could be yours. Check out the amazon reviews, some guy had 2 defective products sent to him before receiving a working one. And many others product failed right after the 6 months warrenty. I've asked for a replacement but they asked for $40 to send me one (to cover shipping). Although, their customer service was quick to reply, I think $40 for a replacement of a defective product that they sent is ridiculous, I might as well buy another product.
This was my experience, and I should've listened to the other reviewers. Just giving you a heads up!
 
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