ZEROLEMON Samsung Galaxy Note 4 Extended Battery, Samsung Galaxy Note 4 10000mAh Tricell Extended Battery + Black Extended TPU Protection Case (Fits All Versions of Galaxy Note 4) - Black

Just received my battery yesterday for my Note 4 because the three previous slim batteries I bought all would drain within 3 to 4 hours of light use.This battery does last a LOT longer. I fully charged it for 12hrs and started using it at 10am this morning. It is now midnight and the battery had just now gone down to 1% after a full day of running my biggest battery drainers on my phone almost nonstop. Using Netflix and YouTube and a game along with Bluetooth usually drains my battery within 2 hours but I was able to go over 12 hours straight today. I give it 4 stars instead of 5 because I keep reading how people are getting a solid 2 days of "heavy" usage and I'm only getting 1 with moderate usage. I've also read that the battery stays on 1% for a very long time so let's see how that pans out. I downloaded an app to adjust screen brightness so my phone doesn't go almost black at 1% so I haven't had that problem.As far as the size....what do you expect? It's a mega powered battery. Well worth it and we'll worth the price.I'll update as soon as the battery runs out completely and I recharge it fully again.**UPDATE**I usually listen to nature sounds on YouTube to go to sleep, so I ran that all night with my battery at 1%. It finally died at 8am, exactly 8hrs after it hit 1% so I almost got a full 24hrs straight of moderate to heavy use out of this battery.The only problem is I'm going to work in a little bit and the battery is not charged, so I had to switch back to my slim battery and I'll have to use it until tonight before switching back to the big battery to charge it overnight.When I charge it fully again, I will try using it as little as possible and use as many battery saving procedures as possible to see how long it lasts. I'm very satisfied so far, just a little disappointed it didn't go 2 days as it did with many people.I just might buy another one of these batteries and a charger. This way I'll constantly be active for a full day without worrying about switching back to my slim battery.

I HIGHLY RECOMMEND this battery and case for anyone who hates running low on battery in the middle of the day like i do.I have been a faithful customer to this product for over 2 years now.With heavy use, this battery will last a good 36-48 hours, even though i still charge overnight every night.This 10,000 mAh beast is actually probably even better than having the power of 3 original 3,220 mAh batteries combined, just from my personal experience.I just bought this new one after the last case with its thin inner plastic skeleton became obsolete (which Zerolemon took care of with the far better NEW casing).While i'm getting used to the new finish on the solid hard rubber case (not really "smooth" to the touch like the old one), the only other thing(s) that i do miss with the old one are the flap-covers for the micro usb port and the headphone jack....but small price to pay for a far better designed case, which looks better, and is a simple one-piece fit-on/pull off hard rubber cover. The old one was kind of tedious and fragile to take apart, while both the old and the new cases are heavy duty protectors with a full front body bumper and back phone shock absorbency as well.Fair warning! Be prepared for a 1 lb. phone, as well as people talking about how much of a brick it is.It's more than worth it!As an important side note:Be SURE to properly cycle it upon its first 5-6 uses....charge for 12 hours initially, no matter what battery percentage it comes in the mail with....then let drain down to 5-8% 5-6 times, each time recharging it to the max. This will not only give it full and proper functionality, but give accurate battery readings after it is cycled. From there, you can charge however is best for you.One other thing is that the new case does NOT come with a belt-clip/holster, so hopefully you either have man pants and carry it in your front pocket, or for you ladies, keep it in your purse when not in use. :-)One thing i noticed when the old-style case broke before getting this new one:After 2 years of heavy use, the battery felt a little soft and somewhat "squishy", which will happen to all old and worn batteries. It's just easier to notice with this one because it's so big. It was still keeping the phone up to 40% after a full day's use.

This battery does exactly what I want. Here's what you want to know:1) if you use Fast Charging (Settings --> Battery), the battery will only charge to 1/3 of its actual capacity. If you charge overnight, turn off fast charging (but fast charge is useful for topping it off).2) Your phone will give the wrong battery percentage. Battery life from 100% to 1% or so will be like the original battery, but then it will stay at 1% for a couple of days. I've never managed to have the phone shut off due to battery.3) It makes the phone quite a bit thicker, but not much different from a Note 4 in the Otterbox Defender case.4) No NFC, so far as I can tell.I love this battery and my battery woes have gone away. My OEM and other generic batteries are gathering dust, where I used to carry a spare or two.I am impressed by Zerolemon so far. They say to let the battery charge fully and drain fully six times to calibrate the battery, but I wasn't strict about it. I just tried to let it drain down low a few times. Again, since having it, I have yet to run out of battery and don't worry about forgetting to charge it at night.I will gladly deal with a thicker phone if it means I can count on it when I need it!