Note 4 Battery Acevan 3450mAh Li-ion Galaxy Note 4 Replacement Batteries for Samsung Galaxy Note 4 N910, Verizon N910V, AT&T N910A, Sprint N910P, N910T, N910F, N910U LTE, Note4 Spare Battery

First and foremost, I bought this battery to replace the stock battery my Samsung Note 4 N910V came with because I suspected it wasn't holding as well of a charge after allowing it to be fully discharged and being subjected to significant heat during charging. Both of which will reduce battery life in lithium ion batteries and is of course my own fault for doing so. My other suspect for poor battery life was the recent security updates to the Android 6.1 OS; currently Aug 1st, 2017 patch.With all that being said this battery boasts a minimal increase in milliamp*hours rating from 3220 mAh to 3450 mAh. One of the reasons I bought this battery was because the difference in rating meant it was likely not a simple refurbished battery but newly manufactured third-party battery.As for actual battery life the battery lasts about 7-8 hours with on and off use throughout the day, a couple of hours longer than the original battery which lasts only about 5-6 hours. This indicates my original battery's health has definitely degraded. I also think the security updates have played a role as the phone used to last all day without needing a recharge even with the original battery.This battery shows very good signs of quality and operates like a new original quality battery. It was shipped in a simple white box packed inside a standard amazon box with air bag packing and came with a thick ribbon style charging cable also in the box. I haven't tested to see if it's data capable yet because I used it to replace my faulty power cable for my Raspberry Pi 3b.The battery itself was already charged to 67% which is good because storing lithium ion batteries at full charge leads to health degradation. You should charge it to full and discharge it to 20% and recharge the first time you decide to use it though. This will help ensure you have received a good quality battery as any defects will likely present themselves during this time. DO NOT FULLY CHARGE CYCLE LITHIUM ION BATTERIES. It will degrade the battery life of li-ion batteries, it does not calibrate them. That is a method meant for Nickel Cadmium batteries which have a sort of charge memory from the chemicals used.TLDR:All in all its a great quality battery with a nice additional 3ft charger cable included for a great price. Lasts 7-8 hours with fairly average on-off use. I'd recommend buying two along with a separate battery charger if you like to use the Note 4 heavily.

Edit; 06-07-21 I'm changing this largely negative review to a positive one, because over the last 3 years (the length of the warranty) I've gotten several replacements for failed batteries, making them a better value than even more expensive batteries which are I guess priced that way to give the illusion of greater quality, which they are not.Sometimes these batteries would fail in as little as 5-6 months, but the seller has always sent replacements in a timely fashion. Which means I paid $30 to have 2 working batteries (so about $15 each battery) for 3 years, vs. The more expensive batteries I bought to comparison test which ran $15-25 each, which failed in about 1 year.I haven't been able to find a good battery to buy at any price, so even though I got a couple duds through the replacement process, the seller has replaced them every time, so I am buying more of these now that my warranty will run out in December.Edit; 11-15-19 replacements will not charge past 85%,indicating weak/not functional batteries, changing my mind about these being a good deal, if the battery is so weak it won't charge past 85%, that also means it sometimes fails at 40-50% if trying to take pictures with flash, which has happened.Edit 10-15-19; the replacement batteries came fairly quickly, within a week, after the seller tried to do some remote troubleshooting (made excuses, recommended charging them with a different charger, etc) and the replacements are working fairly well, but one of them charges to 85% then slows waaaay down, taking forever to get to 100%.If you're reading this you probably have a note 4, so know that with the fast charging capability, you gain about 1% per minute, the 85% then slow charging was done with the fast charger, indicating this battery is already not performing correctly, meaning I'll probably need another warranty replacement in about a year.Still a good deal since the seller fulfills the warranty?Bought 2 of these December 2018, both are now failing in under a year (this review written October 2019), will update this review if and when they send replacements. Worked well until failure, fit into battery compartment properly. One is now showing 1% even when plugged in for hours, other shuts off at 20-30%. Emailed seller today, will report time until response/replacement.

I have had some issues with these batteries. Some of the issues I have had with them is... All 3 batteries I purchased have had the bottom strip of the battery pop off. I tried to superglue the piece back on, but it only lasts so long. I got a couple batteries replaced for that and the same thing just happened again. Instead of having to get them replaced over and over, I just used some electrical tape on the bottom, so it fits in my phone and the chargers well, and it's been OK for now. I'm not sure how long that fix will work, but there's a 3 yr warranty, so I know I can get yet another replacement if needed. Another issue is 2 of them kept making my phone restart. The seller had told me that maybe it was a storage issue on my phone, but I have plenty of memory available on my phone. When they sent the replacements, those batteries have worked perfectly until now. I have just had to ask to get yet another battery replaced again . That one has started restarting my phone, where I only can use about 10% of the battery after charging it. It starts heating up my phone and resetting over and over in a loop. The phone and/or battery gets super hot and won't work at all. IF it does restart and let me on my phone the battery drains in minutes. If I am even able to open an app the phone it'll immediately start the resetting process again. I am hoping they will replace yet another battery for me, since that battery is useless to me now. They have been pleasant to work with having the batteries replaced though, so I am super thankful for that, which is the only reason I gave them 4 stars.

Con carga completa dura menos que mi pila original con varios años de uso.