Customer Review

45 of 46 people found the following review helpful
5.0 out of 5 stars New Trent iPhone 4 Power Rock Case, 14 Nov 2011
By 
This review is from: New Trent Power Rock Case with Extended Rechargeable Battery Juice Case 2100mAh for IPHONE 4 4S (IMP210B/NT210B) (Wireless Phone Accessory)
I received my New Trent iPhone 4 Power Rock case about 3 weeks ago and I am very happy with it.

Included is a micro usb cable and a screen protector which is a great bonus. The case is very durable and has a rubberized texture which gives it a high quality feel. It fits the iPhone snug and securely. On the lower backside there are four lights and a button. By pressing the button, the lights light up showing how much battery life remains. It is almost twice the thickness of the iPhone 4 and half an inch longer. Some may complain about the thickness, but considering the amount of extended battery life it provides, it is very much worth it. The size is also easy to overlook since I only plan on using it while traveling.

So how good is the battery life?

I've experimented with 2 ways of using the battery. One way is to leave the battery on at all times so that it runs in conjunction with the iPhone's own battery. The other is to turn it on when the iPhone 4 battery is running low. (By pressing and holding the button on the back, you can make the battery active or inactive.)

1. By leaving the battery on, I was able to use use the phone for 53 hours of normal use (for me) including listening to music via wifi and 3g streaming, texting and checking my mail.

2. By turning the battery on when the iPhone battery was at 4%, I was able to charge the phone back up to 76% giving me a total of about 48 hours of battery with similar use as before. (The phone probably would have reached almost 100% had I not used it during that time.)

Option #1 is my method of choice due to the better performance.

Overall, the New Trent iPhone 4 Power Rock case is a great value and keeps my iPhone going when I am unable to plug it in.
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Tracked by 3 customers

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Showing 1-4 of 4 posts in this discussion
Initial post: 5 Dec 2012 05:36:51 GMT
N. Chamdia says:
Hello,
if i want to use the battery like how you described in #1, am i supposed to leave the battery on even when the iphone continues to show the fully charged sign? Won't that weaken the iphone battery (considering that it will be overcharging?). thanks

In reply to an earlier post on 20 May 2013 22:29:15 BDT
Phil says:
I think Li-po batteries like being kept topped up, they don't like being flat so always best to top up the charge if you can instead of running it right down then charging it up again. So i expect it is actually better to have it as #1 than #2.

In reply to an earlier post on 1 Aug 2013 12:15:14 BDT
Im confused! If my phone is fully charged and I connect the juice pack is the phone working off the back-up supply or its own battery? Any help/advice gratefully received!

In reply to an earlier post on 4 Aug 2013 02:17:59 BDT
n8sb says:
If the phone is fully charged, it will act as if it is plugged in and run only off the battery pack.
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