PulsePak Battery Booster of up to 2 Hours for Apple Lightning Charged Devices - Retail Packaging - Black

Neat little top up product for an "emergency" charge. I only wish it came in USB C. It does drain over time so I'd recommend periodically using it and then topping it up so that you have the charge when needed. I think that after 3-4 weeks mine was dead or at least low. Keep in mind that this is only going to get you 1%-10% battery on most devices and as batteries keep getting larger and higher capacity, this little top up will do less and less. I've actually had to use it in a situation where I was traveling and my phone was dead to call a Lyft to come get me so that I could make my flight so it does exactly what I bought it for: work in emergency situations.

The good news is, it works. I was concerned about if it did work upon reading some reviews. When I received the item, it initially didn't work but it finally worked. The problem is, the mechanic of the sliding slot wasn't done very well so it would take some effort to really connect it to the iPhone. But once it's connected, it charges my phone for additional 18%.I like it that it's extremely portable that I can just attach to my keychain. The keychain hook that comes with it is a very nice touch as you can clip to the keychain and remove it very quickly to charge.Overall, I think it's a good product but hopefully, they can improve their mechanic so it will feel more like a high-quality product.

I liked how it was small and portable battery charger. I tried to use it on an experiment to make a portable smartphone charging valet for multiple phones. I also used the second to charge my phone. 1 out of 2 of the batteries work very well. The other one holds a short charge enough to give me 10 or 20 percent battery. I just think one of the batteries has a short in it or something that causes it to discharge fast. I use the devices when I need it.

I bought this item in the past & loved it, but I bought more & am disappointed by the change in design. In the past & in the picture, the clasp for hanging it from a keychain or belt loop (my favorite) is no longer an easy-to-use lobster claw. Now it is some really difficult mechanism that is impossible to open/close, so I have to attach with a carabiner :(If not for the new design, I'd give it 5 stars for convenience!

Nice and small, it fits on my keychain without bulking it up. I tested it twice. From 10% it charged my iPhone 5S up to around 32%, and from 50% it went to 71%. So that's really great for such a small battery! In an emergency, it's perfect, because you might not always have your bulky power bank handy, but you usually have your keychain on your person; at least I do. I also love the retractable plug, although now it doesn't always stay all the way in when retracted. A better design would be to have a small detent to keep it in. The only thing that could make it better would be to offer it in a variety of colors!

I have about 4 of these now. They all work like they should. They are a very small battery that will give you some extra juice in an emergency situation. They take up very little room and you can take them anywhere.I really like them for charging and boosting small portable devices. One of these will charge my Garmin Vivoactive (Smartwatch) a couple of times. I think it extends my GPS watch to about 20-30 hours.So yes, it will give your phone some extra juice. But if you have small devices with small rechargeable batteries (watches, Bluetooth dongles, action cameras, gps devices, etc) that you want to charge on the go, then this is a great thing to have.

nice pocket charger for emergencies...gave me a solid 15% boost for my iPhone. Recharge took a couple hours but not that bad.Lasted about 6 months before lightning retractor switch broke and i couldn't insert it into the phone anymore. oh well, fun while it lasted, but will not buy again.

Extremely cheaply made but you get what you pay for. I needed a battery to power a small Arduino project and this works great. If you pull it apart to rewire stuff, just be aware the whole damn thing has some sort of coating that is horrible if you burn it with a soldering iron. Oh, and those itty bitty wires that snap really easily.