Customer Ratings & Reviews

Shipment was a little delayed but the performance was impressive. The battery worked like new. I got the one for my note 3 and my wife's note 4. Make sure you charge the battery for at least 10 hrs before first use to get the best out of it. I'm glad i found this because i can now enjoy my old phone for a few more years. Do not buy the cheap imitation on Amazon unless you just feel like dissapointing yourself.

It was a reasonable price for the phone battery. I've had it a couple of weeks now and it seems to work well. it holds a charge for all day.the ship to store was free so I chose that way to get it. shipping was very slow about 2 weeks.

Bought this battery back in July of 2016. A little over a year now and it still works great. I bought it as a replacement for my spouse's phone whose battery kept loosing the charge. I will say he's constantly on his phone playing phone games or taking work calls, checking emails and he has had no issues :) yet. Great price would definitely buy again if needed :)

The Samsung galaxy note 4 has awesome battery life but when the OEM battery goes bad it starts shutting down the phone abruptly. The price and quality for this replacement battery and availability from BestBuy.com made it an easy choice. Give it a full charge and you are good to go.

Finally a good replacement battery for my Samsung Note 4 phone. Initially charged it for 8 hours. After that it held its charge like my original battery. Other so called OEM batteries were a waste of money. This one finally performed like a new battery should.

I tried to find a replacement battery for my Samsung Note 4 online but was skeptical of low quality products so I decide to go with Best Buy for the backing. I've been using this Ultralast Lithium Battery for several months now without any problems. It arrived sooner than scheduled and I picked it up at my local store. Very happy. Thumbs up.

I have bought other batteries and always the same thing had to keep charging my phone. This battery has been terrific I no longer have to charge my phone 3 times a day. I get at least a full day now. It is really great knowing you actually have a great battery and not having to worry about charging your phone all day.

My Samsung Galaxy Note 4 phone was 3 years old and shutting down at 52 or higher percent. I bought this new battery to replace the original. I then charged the phone for 12 hours. Happy to say it holds the charge very well. I didn't want to pay almost $1,000 for a new Note 9. Perfect and cheap remedy. THANK YOU!!!

I've had the UltraLast battery for about 2 weeks. It performs as well as the original battery when it was new, and I can usually get 2 days of use from each charge. Before I got this battery, I was ready to ditch my 3 year old Note 4, but now I feel that I have reliable phone and plan to keep it until it dies.

I got this battery as a replacement for the original battery that came with the phone. So far it works great stays charged all day long.

Excellent battery life and quick charging, good deal

This new battery is a God send! I charged it for 12 hours when I first installed it and it holds a charge for about a day and a half. My old battery after 2 years, was losing its charge and shutting down with 52 or 62 percent battery life left. I highly recommend this battery!!!

Was concerned that purchasing a new battery for my two year old cell phone via online was going to turn out to be an error on my part in choosing the correct item. However, all is well. My old battery was only lasting 8-10 on a full charge and the new one lasts a full 36+ hours.

Works well with the phone but concern is the product is not original Samsung product which it seems to be when purchasing.

This battery has really brought my phone back to life. I've only had it for a week, but the difference it has made is major.

This battery replacement for the Samsung galaxy note 4 is outstanding. It has brought my Note 4 back to life. I can now go all day again without having to be tethered to a cord. Highly recommend! I was so satisfied I purchased a 2nd one.

I installed the battery and let it drain down completely. And then recharged it fully and seems to be working and holding charge well.

I bought this same battery from Staples and it was defective. Returned it. Then purchased a battery by the same maker from Best Buy. This one works as well as the original for which I am most grateful since I don't want to part with my phone.

Replaced old 4 yr old battery New battery can drain down to 1 percent New battery lasts entire day with moderate use of phone

I have had the very worst luck with the so called Samsung batteries for my Note 4 phone. Read all the reviews for the Ultralast battery and decided to give it a go. Let me tell you it was the best buy I ever could have made! No more issues!