Samsung Galaxy Note 10+ supports 45W Super Fast Charging, but there's fine print

Samsung Galaxy Note 10+ supports 45W Super Fast Charging, but there's fine print
Super Fast Charging – sounds like something no one would mind having on their phone, doesn't it? This is what Samsung calls the charging tech employed by its new Galaxy Note 10 and Note 10+ smartphones. Both of these new devices ship with 25-watt chargers in the box – a considerable upgrade over the Note 9 and Galaxy S10 series which shipped with 15-watt chargers. And a special, extra-powerful charger can recharge the Note 10+ at up to a whopping 45 watts! All in all, Super Fast Charging sounds like a welcome improvement all Note 10 and 10+ owners will appreciate, but this new feature comes with a lot of fine print we believe should be brought to light.

45W Super Fast Charging is available only on the Galaxy Note 10+

As rumored, only the Samsung Galaxy Note 10+ will support Super Fast Charging at up to 45 watts. It seems like the smaller Galaxy Note 10 will only charge at a rate of up to 25 watts, judging by what is stated in its specs sheet. 

Is this a subtle tactical maneuver meant to steer people into buying the more expensive Note 10+? Well, probably not. The thing with fast charging is that you don't only need a suitable charger, but also a battery that can handle the charge flow. And the larger the battery is, the easier and safer it is to charge it rapidly. The Note 10+ comes with a 4300mAh battery, the largest on a Note smartphone ever. At the same time, the faster a battery can be charged, the less charge it can hold per unit of volume. In other words, if the Note 10's battery cell supported 45W charging, perhaps it wouldn't have been able to hold its 3500mAh of charge.

45W charging requires a special adapter – and it doesn't have to be Samsung's

As we stated above, both Galaxy Note 10 models come with 25W wall adapters in the box. If you want to enjoy 45W fast charging on your Galaxy Note 10+, you'll have to buy a new power brick. Samsung already has a suitable wall adapter listed on its website, available in black or white. Pricing isn't known, but rumors are pointing at a $50 price tag. 

Interestingly, it looks like you don't necessarily need Samsung's own power adapter to get even faster charging on the Galaxy Note 10+. Both Galaxy Note 10 models support the USB Power Delivery standard version 3.0, meaning that they'll also charge rapidly from compatible third-party chargers. 

45W vs 25W charging: how much faster is it?

It seems logical to assume that the 45W charger will be 80% faster at charging the Note 10+ compared to using the stock, 25W power brick. After all, it is 80% more powerful. However, the actual boost in charging speed will most certainly be lower. That's because the charging rate doesn't stay constant. Your phone's battery only gets the full blast of its charger when it is empty or in the lower percentages. As it fills up, the rate of charging is reduced to keep the process safe. This is valid for practically any modern phone. For example, even though the Huawei P30 Pro comes with a 40W charger, we've observed the rate of charging dropping well below 10W towards the end of the process.

In any case, Samsung says that the Galaxy Note 10+ (the non-5G version) will last through a day of use after 30 minutes of charging with its stock, 25W charger. We also noticed that the unit used in Samsung's official Galaxy Note 10 hands-on video was at 15% and displayed a "56 m until full" message on its lock screen. Unfortunately, we have no idea whether a 25W or a 45W adapter was used for the demonstration, but no matter how you look at it, a zero-to-full charge in about an hour does sound pretty fast.

Can 45W Super Fast Charging damage the battery of the Galaxy Note 10+?

It is no secret that lithium-ion batteries have a limited lifespan. Every charge-discharge cycle takes away a tiny fraction of a cell's capacity due to the build-up of microscopic internal defects. And yes, the faster a battery is charged, the faster it loses capacity until it eventually becomes unusable. On the other hand, a battery can be designed to handle fast-charging better, and Samsung does happen to know a few things about designing batteries. Besides, the larger a battery is, the easier it can handle faster charging rates, and the Note 10+'s 4,300mAh cell is the biggest in a Note phone to date. So if you find the 45W rapid charging abilities of the Note 10+ practical, we believe that the battery cell that Samsung picked for the Note 10+ will handle the load just fine. But if you want your Note 10+ to last a really long time or if you tend to charge your phone overnight, you might want to avoid chargers faster than the one Samsung put in its box. 

Related phones

Galaxy Note 10+
  • Display 6.8" 1440 x 3040 pixels
  • Camera 12 MP / 10 MP front
  • Processor Qualcomm Snapdragon 855, Octa-core, 2840 MHz
  • Storage 256 GB + microSDXC
  • Battery 4300 mAh



1. Ichimoku

Posts: 173; Member since: Nov 18, 2018

4300 mAh? wow. that's a serious number of mAh.

5. matistight

Posts: 997; Member since: May 13, 2009

For the plus, the 3,500 in the Note10 (which is probably what everyone will buy) is disappointing

9. cmdacos

Posts: 4267; Member since: Nov 01, 2016

True note users won't be buying the baby note.

13. legar123

Posts: 59; Member since: Mar 26, 2019

Come on. Its 6.7 inch. Wouldn't expect less.

2. iloveapps

Posts: 862; Member since: Mar 21, 2019

Fanboys whine about apple putting just 5W charger on the box so people may opt to buy fast charger. Now Samsung is using the same strategy. This is good for Samsung to add profit margin. They have been losing profit every quarter and 56% dropped is alarming.

4. KingSam

Posts: 1479; Member since: Mar 13, 2016

Are you dumb? Anything above 18 watts is fast. I use 18w on my LG and it's pretty fast.... It literally comes with 25w charger. Apple ships a 5w..... 5 watts in 2019.

7. cmdacos

Posts: 4267; Member since: Nov 01, 2016

The answer to your first question is, of course!

6. Alcyone

Posts: 489; Member since: May 10, 2018

Sometimes I wish I didn't know how to read. Your lack of intelligence and the non-sense you post, make my head hurt.

16. corvette72778

Posts: 166; Member since: Feb 25, 2012

I'm ordering the 45 charger for free with Samsung Pay points.

3. Mike88

Posts: 438; Member since: Mar 05, 2019

Joke of the year - "On the other hand, a battery can be designed to handle fast-charging better, and Samsung does happen to know a few things about designing batteries" How can you forget about the Note 7 blasting batteries?

8. cmdacos

Posts: 4267; Member since: Nov 01, 2016

I know, hard to forget when we're constantly reminded of battery volatility with iPhone batteries blowing up regularly ever since.

10. splus

Posts: 163; Member since: Nov 26, 2011

To be honest, after the Note 7 fiasco Samsung had to put much more attention into designing batteries, so now they have a lot of expertise about it...

11. Tsepz_GP

Posts: 1176; Member since: Apr 12, 2012

Great Apple-esque strategy on selling the 45W separately. The Note10+ is clearly the one to get here. Wish Samsung had at least tried to compete with Huawei on Camera Zoom and Low Light capabilities. Now let’s see what the Mate 30 Pro brings. And yes, we will never forget the Note7, guess it’s good Samsung kept the 45W charger separate, LOL.

17. UnlimitedSkye03

Posts: 300; Member since: Apr 27, 2012

Yeah, Huawei was generous enough to put the 40w supercharger in the box, wish all manufacturers would do the same.

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