No more dead battery!
357761
The charger works well, and it keeps the battery charged in a car we don't use very often.
1819435
Bought a 30 gig iPod a few years ago and loved it, but was being driven crazy by the short battery life. I should've replaced the battery with this immediately - now I can listen and adjust volume, etc for hours and have plenty of battery life left. It didn't come with any instructions whatsoever, and the levers did mar up the case just a tiny bit, but so what. I'm really pleased with this cheap battery!
792707
Works like a charm! Glad I didn't buy the name brand battery and spend all of that money for no reason
867547
I love that you can turn it on and off.  This saves the battery for when I'm ready to use it.  I have had no issues charging it.  It works great.
1901773
Bought this a few months ago when my car battery was dying and it saved my bacon until I could get a replacement battery. The last few days I've been dealing with a blown fuse left in the on position draining the new battery and this thing worked like a champ again. Totally worth it.
2103348
My phone started to act up a week and a half before my family's vacation to Disney World. It would randomly restart itself unless plugged into the charger. Many trips to my provider and independent techs later, Google informed me that the likely problem was a dying battery. No local providers or retailers carried new batteries for the G3 except for Batteries Plus, who wanted $45. I found the Anker option here on Amazon and gave it a try. Two batteries for less than the price of one? It was worth a shot. After charging up the first battery, I popped it into my phone. Problem solved! No more restarting issues!
Some of the other reviews I read complained about these batteries losing their charge quicker. I don't game on my phone, but I do use it frequently throughout the day, and I haven't experienced any different performance. The G3 is a battery hog, plain and simple. Having two batteries now has solved that problem for me. On my trip to Disney I simply tossed the spare battery into my backpack. I never once ended my day with a dead phone. At night I could just plug my phone into its charger and throw the depleted spare battery on to the wall charger. The next morning I was ready to roll again.
2845870
Have you ever been stuck with a dead car battery and wished you had an easy way to start it up? With this backup battery you do! No more having to ask strangers to jump your car. You can do it yourself now. And, if your phone needs a charge, this has two built-in USB ports to charge any of your devices.

Use:
It's pretty simple to use. Just plug in the two jumper cables to the battery and attach it to your car battery. Turn on the battery pack and wait for the green LED light to turn on and you're ready to start your car. It's really that simple. If you want to charge your phone, just simply plug it into the USB and the battery will switch modes automatically to charge it.

Safety:
When I was unpacking this jump starter I thought it would be just like jumping from another car, except it was a battery in a pack instead of the car. It turns out there are many safety features built in to prevent damage to the car or yourself. If you mix up the positive and negative cables the LED will flash red and not allow a current to flow to the battery. Also, if the car battery has more juice than the backup battery, the backup battery will stop the current from flowing into it and prevent any short circuits.

Overall this is a great battery to keep in your car for emergencies. I hope I never have to use it, but if my battery does die, I'll be glad I have it. I don't plan to use it as an external battery pack for my phone, but if I ever need to, I'll be glad to have it.

Writing in-depth reviews to help other shoppers has become a hobby of mine. If you found this review helpful please mark as helpful below. Also, feel free to ask any questions and I will answer them for you!

Disclaimer:
I did receive this product at a discounted price for my honest and unbiased review.
331425
It's great!  Now I always have a charged battery when I go on long trips!
I used to always worry about not having phone access if it ran down while I was driving out of town and far from a wall plug in. Worry while driving is not fun!  Now I have peace of mind and feel safe on the road!  Thanks, Amazon!
2511584
High capacity battery that actually works!  Used this with a trip to Washington DC to document a HONOR FLIGHT trip.  Battery performed and gave more than 3 times the original battery life.  Get this, and don't have to worry about running out of juice quickly!
3240142
Great replacement for my OEM batteries, actually more power!
2514817
I waited at least a few days before reviewing this item.  MY Samsung Galaxy Note Edge was literally going thru a full charge in a matter of a couple of hours. I know the battery was probably bad at this point thus the reason to search for new battery.  After looking the retail price of a replacement battery, I came across this item.  After reading several reviews, I thought I would give it a try.  I am glad I did.  I now have charge for the full day.  Before my original battery starting acting up, I was spending a small fortune in charging cables so I had one pretty much in every room and in my cars.  With this item, I feel I have enough charge to last.  Yes, it adds a little more weight and just a slight bulkiness compared to original battery, but worth it!  Even if you don't want to use it all the time, you should have it handy so when you are going places where you will need extended life on your battery.  It's a snap to change it from regular battery to PowerBear.  I am looking at purchasing one for my wife as she likes the look of the new protection case that comes with this.  I highly recommend it!!
4398856
This battery pack works great. I opened my Ridgid rechargeable battery housing, replaced the dead cell pack with the new one and that was it. Voila! I did however, experience a little snugness due to the insulator fitting was a bit thicker than the original. So I used the original and it did the trick.
1864060
Our CF Moto trike was purchased in 11/12 & we had dead battery problems almost from day one.
We then purchased a battery tender & that was no real help to our original battery.
We then bought this battery here on Amazon & our dead battery problems were solved by this GREAT battery !
1681089
I've been debating this for a long time, but after about 4 years my original battery was not making it through the day any longer... and I always did feel that I should have a backup battery... not just replace it.  SO, I went for it. And after figuring out how to replace the original charging portion with this, it was a piece of cake!!  Works great, and I can still loose a call if I do not change the battery as soon as it starts beeping...  but this is wonderful compared to having to hang it up for a couple hours!!
3321394
No more worrying about replacing dead batteries when I forget to turn off my tail light!  And its plenty bright.
4457798
Worked like a charm!  Just don't know why I waited so long to try changing the battery.
2960062
Worked wonderfully! I have an old s4 that even when I was still using it as a phone (use it for just music now) it used to die at 50 or 60 percent
suddenly and charge would go down fast years after having it. Never knew it was because of a bad battery. Officially stopped turning on and charging a couple weeks back was about to throw it out but someone told me might be a battery issue and I searched and found this and now the charge holds again for hours instead of an hour. Doesn't die at 50% anymore and I'm happy I didn't end up having to redownload aaaaalll my music (and then some)