When I moved from an S3 to an S4, I of course bought the appropriate ZeroLemon for the S4...and found that the battery life with the S4 is even better than for the S3, amazingly.

I love ZeroLemon and their products, but this one seems like its falling short

always Great zerolemon

The Zerolemon is actually smaller than the Mophie, way easier to use and more power.

Great job ZeroLemon!

The battery is good, not great, hang onto the original, zerolemon is good for travel I suppose

Thank you ZeroLemon for an outstanding product!!

I will recommend this zerolemon to all my friends.

ZeroLemon recommends 5-6 deep discharge-recharge cycles to ensure battery performs at its peak

Again I LOVE ZEROLEMON.

Zerolemon please make your cases to protect phones better.

Zerolemon did good, and made an amazing battery + case combo

Thank You Amazon & Zerolemon for a wonderful deal

I need the more durable ZeroLemon case; the capacity of the battery more than makes up for this and is a great buy.

I highly recommend zerolemon.

I regret upgrading my cell phones and not enjoying my zerolemon anymore

I bought the zerolemon 7500 like most people for the expected amazing battery life

(zerolemon recommends you do that every now and then) only thing i recommend is that you use your oem phone charger for it to juice it back up...those cheap $6.00 chargers dont really work well with it

Great job zerolemon

no problem, also ZeroLemon is great.

no problem, also ZeroLemon is great.

The speaker on the rear of the phone is barely affected, and considering what Zerolemon had to accomplish making this product, I thought they did VERY well

ZeroLemon is the best.