Hey folks... Just a heads up for anyone contemplating the purchase of a supplemental battery for your iPhone (any version). I was on eBay and saw a battery very similar to the ones being sold by Richard Solo . Anyway, the price with free shipping was $6.79! I figured it would be a POS. Guess what.... the thing is amazing! It has four blue LEDs to show the state of charge of the battery. When it is fully charged another blue dot shows that the battery is fully charged. You can always check the status of the battery by pressing a little button and the led lights will illuminate accordingly (depending on how much juice is remaining). It securely latches without resorting to clips and whatnot. I had my phone down to 20% then attached the battery to the bottom of the phone. It charged the phone FULLY and it still had juice to spare. The manufacturer claims it is 1900 Mamps. Solo sells the same type of battery for $69 plus shipping. It just shows how much profit is built into these accessories. If you're looking for a decent auxilliary power source I suggest you go on eBay and get one today. I have nothing to do with this company but I just hate when people get ripped off so I love giving money saving advice. Ask me any questions if you have. I'd be glad to answer them. Thanks for reading!