Lomui 3900mAh Battery for Samsung Galaxy S4 I9500 I9505 B600BC High Capacity

I bought this battery to replace the battery inside a Galaxy S4, which had died on me within a year. I am a heavy user who uses my phone for various uses constantly. Overall, I find this battery to be OK, but not great or terrible, as many reviews indicate. First, they're absolutely no directions included, so unless you read amazon's website that tells you to charge it for ten hours straight the first three times you use it, you will be disappointed with the product, as it won't work correctly without that, at least per other reviewers posts. The fact that the seller doesn't include these instructions in the product itself is truly asinine and super lazy.Second, I did follow these instructions, but I did not get some giant superior performance out of this product that many say they get. Perhaps other users rarely use their phones. I personally check email, trade stock, read stories and use my phone quite a bit and under that sort of use, I get maybe 10%-15% more battery life than I did with the standard Galaxy S4 battery.Overall, this battery is a standard replacement for your normal battery and nothing more. The fact that packaging lacks any sort of instructions is truly lazy on the seller's part.Would I buy this battery again? No, I would not, I would search out a battery that actually lives up to its own hype or pay less for another battery that will perform the exact same.

The battery was at 54% when it came in the mail. It took almost 13 hours for it to die with the phone on in standby, not really using it much.Charging now.Question is should I turn my phone on and continue charging or should it stay off. For maximum results I am leaving it off while charging until I receive some feedback. Might want to consider a wall charger for heavy users, or if you cant live without your phone ;)I should mention that I consider myself a power user, lots of apps, smart watch, bluetooth ear bud. Normally I am at 10% or lower after a hard day of use around 6pm5/31 Update I am starting the 3rd charging cycle now. Charged it completely while off. It lasted 28 hours or more. I actually fell asleep listening to Pandora. Took 4 hours to charge completely back up with the phone off. Loving it. Have to keep reminding myself that I don't need to be plugged in all the time.6/1 Update Just passed 5% after 24 hours of moderate use. If I forgot to put my phone on the charger, it was always dead by morning. Thanks seller. Buyers read the directions !

Not as advertised. Maybe just a Defective Battery. Still better then my old batter not by much. After several days of use and testing the battery I get 2 1/2hours screen on time, 3 days screen off time (from estimated app time)my phone was maybe 15 hours. While the screen is off this battery holds its charge very well. Though while using it(Heavy use)discharges faster then my stock batter I get 3 1/2hours on heavy use. So kinda give an take with this battery. Also I did a little research and found this battery might last 100 charges before loosing life as it runs at 4330mv at a 100%. Premium batteries run at 4.2mv for a 500+ charge no life loss. And it only reads my batter at 2,945mah not the said 3900mah. So not happy with the battery but if your a light user this batter is for you.I will contact customer support and update as the situation continues.

People have posted reviews of this battery stating that it did not perform as they had expected it to.There are explicit directions in the item description that provide steps that need to be followed to condition this battery for optimum performance.IF YOU FOLLOW THOSE INSTRUCTIONS, the battery works great.After my 3 full 10 hour charges when the battery was fully depleted I am getting good performance out of the battery. After going through the 3 10 hour charges, I charged it 2 days ago for 5 hours only, which is the recommended maintenance charge going forward. The battery lasted nearly 30 hours on that 5 hour charge, which is much better performance than I was getting from my worn out OEM battery.If you follow the instructions, which most people never do, you will be pleased with this battery.

I was skeptical of this battery because it had mixed reviews. But since it was less than $13 I decided to give it a try. Now I wish I had bought two. Those that say the battery is worthless must have not charged it fully and properly. This battery last 5-7 hrs longer than the stock battery. I consider myself a moderate user. I surf the Web, and stream videos occasionally. Most of my phone time is used in looking up info on the Web, text messages, Facebook, phone calls, and email. With this new battery I can take my phone off of the charger at 4am (100%), and it will last me until around 8pm (15%). I love this new battery. You should give it a try!

I am not real sure about all the negative reviews however it arrived at 55% and I let it drain down to 1% and then recharged it overnight. From 7am that day until 5pm the next day it lasted with 2% to spare (34 hours). Today it is showing 3 days remaining on battery on my phone. I would say I am a moderate user of apps, facebook, chive, amazon app, email, etc. I am truly impressed with this battery and how long it lasts. The best part is I don't have to get an additional cover due to the battery being too big like most extended batteries and I don't notice any more weight added to the phone either. Hope this helps!

Battery works great for me. Bought phone second hand. Not sure how long the battery was to last but only got about 8hrs from it. With this battery I'm on it at 6am off and on with apps, games, vids, and it lasts me all day till say 8pm and when I'm about to lay it down with about 25% Batt life remaining .love the battery. Would recommend to anyone else.

Shipping time was ok, use time is ok around 12 hours with wifi and Bluetooth activate, the only issue is if you use NFC option to transfer files. NOT working with this battery because don't have the capability for this option.But if you not use the NFC the battery is ok.