Great review, good understanding of battery and PD connection behavior. Battery health indicated by the tool is a predictor. In reality, it is better to have a certain amount of current every day, so I think it is better to charge and discharge a little. Especially since it has been found to be more harmful to maintain 100% charge.
@@jadoei13 you get that with most gaming laptops, they have an option to not charge above 60% so if you are gaming with the charger connected it won't charge and only uses power from the font, making the battery last way longer
Good quality video on a unique and Niche subject. It’s packed with solid info. Way to think out of the box for this video topic I appreciate it and love this laptop!
Cool little test! Glad to see you delving more into the technical side of stuff a little bit. I am a little skeptical over your math on battery wear, with you suggesting something like 20% wear in 100 hours of playing like this. I feel like effective battery wear is probably more of a complicated problem that probably doesn't just happen linearly like that. Still, you definitely raise some interesting points, and there is probably some kind of potential issue there when you give up the much beefier power brick's larger overhead.
Yep, definitely agree with the non-linear wear. It's difficult to know how batteries would fade overtime, but from my experience batteries tend to wear faster as it degrades over time. Either way, I would still be rather worried if my battery is constantly charging and discharging.
@@k.o.t.o.n. That one only provides 140w when connected with the magsafe cable. When using a USB C or Thunderbolt X cable the max power is 100w or 96 Apple watts.
Good video. I'm working on the most efficient setup for gaming on airplanes. Right now I'm using a combination of 100w power bank and 65w charger/onboard power. On my flight yesterday I got about 3 hours playing God of War on standard settings which I thought was pretty good. Using the 65w charger I randomly got framerate dips for 2-3 min at a time. I think I might buy another one of the 100w power banks and just roll with that. I fly 100k+ miles a year and have watched pretty much every movie available so being able to game on some of the longer flights has been awesome. If I have to replace the battery every so often that's worth it to me.
You can play with the 100w charger with the NVIDIA disable, just the integrated AMD grafics is suficient to play most demand games on 720p. On a travel trip where you want to be mobile. That is the way to go. With only the AMD you always charging and fps is constant. Most games you can reach 60fps.
Solution: charge the battery to 100% and then set the charge limit to 60% using the included software, you'll be able to game for quite it a while before the battery reaches 60%. Moreover, when the battery constantly switches between charging and discharging when it's around 50% is tons better than when it does the same near 100% charge.
@@eraldorh what makes you think that exactly? 1. The battery won't heat up much 2. it'll be kept in around half of it's charge which is best for it. Sure, it'll speed up degradation but not nearly as drastically as you think. I'm not suggesting to game on battery, just keeping it as an additional source of power for the GaN charger.
@@TabalugaDragon The constant discharging and charging the battery throughout its use on a charger thats not sufficient to both power the device and charge the battery is going to kill the battery very quickly. This is a known effect, he even points it out in his video and that was from just 2 hours of gaming. It will degrade the battery extremely quickly because its not staying at 60% because the charger isnt providing enough power to keep it there so you ARE gaming on the battery and it will produce heat because of the constant and very rapid charge and discharge cycles.
@@eraldorh well first, this isn't for 24\7 gaming, obviously, I'm sure most of the time the 300w charger would be used, so I'm not sure what you mean by "constant", because who would wanna game on 100w charger all the time, especially given subpar performance with it? Second, when the power isn't enough, the battery only helps with extra power, it doesn't put full strain in it like it would when you just game on battery(which is a terrible idea), therefore there is far less heat and cycles used. "because its not staying at 60%" depends on how you use it, it can be kept in around the middle where the sweetspot for the battery is. I've been using my phone like this for over a year(had to use it as a wifi router), it was always warm due to sharing internet and charging, but because I mostly kept it between 30 to 70% the battery still has like 85% of it's original capacity.
to solve it, you need to disable battery charging when it above 50%, while you at 100% , than you will need to burn the 50% (from the 100%) before the battery will charge again, and it should in theroy give you 6 to 8 hours at least of gaming if not more. also , asus armory create have power options(not sure if with 100W type c you can do custom setup) but if you get after burner, and set up the gpu to take around 50-60W profile + cpu on 25-30W on the armory crate , you should block the peak jumps when the games demands it
you can find it in "myasus " app not in armorycrate , abit wierd that this is the only setting you can set in myasus. so ye, if you want gaming on without destroying the battery just change it to max care than you will have the option to play from 100 to 60% (40%) play time, no clue how much it is....
Your idea is suboptimal. Batteries degrade much more when charged between 80% to 100% and between 0% to 20%. I'm pretty sure most of the fast degrading results he got were due to abusing the 80% and 100% range. Stay in the sweet spot (20% to 80%) and you are good.
@@javiej It is a big harm to keep the lithium battery close to 100% charged instead of deteriorating by charging and discharging. It is easier to maintain good health by charging and discharging the battery a little. 50% is optimal for lithium batteries if stored without charging or discharging. Of course, it's best for the battery to be fully charged and discharged once a month and then kept at 50%, but it's ridiculous to devote your life to the battery. Manufactured machines should be used effectively.
@@javiej he can stay in the sweet spot while doing exactly the same thing as you did. Set the limit of 80% for when you're at home at 200W and then switch to 50% when you're outside plugged into 100W. Besides, if I'm going out, most the times I'd rather have 100% battery, makes no sense to be saving the battery from degradation by using only 80% of it at all times, it's almost like using your toothbrush without much pressure to avoid degrading it faster
Many airline power sockets cutoff at around 85w ... so may be difficult to make use of the 100w USB-C adapters. I've used the Samsung 65w adapter to charge my G15 up as the standard power brick won't work.
This was the video I was looking for, great job! Kinda sucks that I can't just have a USB-C charger as a full time replacement for the power brick, but we'll get there one day!
How to lower the GPU performance a little so the battery is never used with a 100w charger? No big loss because I will still get the most of the performance 100w will allow.
Does anyone know how to set the G15 to not use more than 100 watts of power total? While obviously it would hinder performance it seems like the battery issue would be solved because it would have enough power without needing the battery.
This was super useful. Choosing a laptop is really hard. As someone who lives off-grid power is an important aspect. Seems like avoiding the use of an inverter is not a good idea here though. Thanks
one question i had, is minor gaming, like indies and older titles, still going to damage the battery or is it likely scaled by however much it takes to run?
@@nickdibiase3152 I think as long as you're not constantly fluctuating between charging and discharging, that should be fine. You can download hwinfo to see those details. If you haven't done so already, you can also try to limit the maximum charge inside myAsus so that your battery isn't sitting at a high state of charge for too long.
2 hours is nowhere near enough data to draw a conclusion if this is bad for your batteries. If constant charging and discharging is that bad EVs wouldn't use regenerative breaking? Also, the only way to correctly determine battery health is by charging from 0 to 100 percent.
USB-C charging it’s a good feature in conjunction with a usb-c monitor, that can provide power on the same cable that is used to get the signal. Questions: both usb-c ports of the G14 supports that? If you use the laptop in a wfh setup, monitor/keyboard/mouse and office apps, will a 65w usb-c power adapter suffice?
2:53 How do you explain the charge level going down when the charge rate to the battery is positive? From the previous graph its obvious that negative charge rates only occur when the battery needs to supplement the extra power needed by the system when the 100W isn't enough, so what is causing the battery level to fluctuate? The only thing I can think of is that the BMS wastes about 5W to convert the power from USB-C to the appropriate voltage to send to the battery terminals before immediately converting it again to the voltage needed by the system (which doesn't sound too unreasonably when you consider the BMS is shoveling 100W of power, so an energy conversion rate of about 5% sounds reasonable). So the BMS would be telling the system that the charge rate to the battery is about 5W higher than it actually is, in which case your charge rate graph should be shifted down by about 5W so the new negative charge rates line up properly with the corresponding decrease on battery percentage.
Are you able to run this test with a power bank that discharges at a 100w rate from a usbc port? I’m wondering how many hours one could get from an airline approved power bank. Maybe 27000 mah that has a 100 a usbc port. Trying to play older games with high settings at 1080p. Like halo ce or assassins creed black flag, etc…
At 3:12 ish, where did you get your information about fluctuating power damages the battery? In everything I found, do so does not ruin a batteries lifespan. Some chargers are actually designed this way to regulate where the current goes - Either to the battery, or to the device. I guarantee you if you monitor the charging rate with the stock power brick, it will fluctuate its current to the battery as well, how much is definitely a small amount with modern day 280W power bricks.
İ ve read that its only viable with using asus type c cable and adaptor to achieve 100 watt. With other type c chargers it allows only up to 65watts. İs that true? Have you checked the wattage values?
also - I have this laptop need to make reviews like you. Ive been gaming on my Macbook Charger (think its 80w) and using 80% battery from MyAsus. Seemed to game fine, but I suppose I would have to research how to get that data for battery draw and what not to do a "fulll test" like you did.
Very informative video! Although, I am a little confused on why the frame rate was capped at 60 fps for the whole video? I assume you'd get more detailed results if you tested power consumption with the fps cap on vs off.
Usb C has the potential to charge and play on the laptop using usb c protocol but heard recently that the USB certification board (something like that) that they have release information schematics on next gen tech (or new usb c port charging protocol) that can charge up to 200w (or higher).. currently there are pc handheld devices that are crowdfunded and sended to their backers e.g. gpd win 3 n Aya neo that can play, use external usb c dock & etc just like any other laptop but able to charge and use while keeping under 100w due to chargers included with handheld are 65w rated.. hopefully their future mobile CPU have igpu performance of Nvidia 1650.. that would be great for 60 FPS smooth gameplay at either 720p or 1080p..
Great video, you definitely deserve more views. I have a G14, the older model, and PD charging behave strangly even on the newer 2021 model. If you charge to 100% by PD, charger gets disconnected and only recharge when battery falls to something around 95%. This is really annoying and I wonder does similar charged/discharged cycles appear on G15?
This is absolute normal and intended. Don’t worry about this the engineers did this right. Your phone dieas the same thing (most cases between 100%-98%) but it just shows you 100% on screen
@@lucasmancini2 If the power supply from the charger really goes to zero, it's a misbehavior. The correct operation is to operate on the power supplied by the charger and not charge or discharge the battery.
How about some lighter gaming using the integrated graphics with the GPU disabled? Will this cause the Zephyrus G15 battery to discharge while connected to the 100W PD charger?
Hey man it's a very good video 👌🏻👍🏻I have lot of questions. 1 so can I use type c charging in light task? 2 can I use type c charging full time if my laptop does not require power more than 65w, Considering that I use 65w pd charger. Is it damaging in this case? 3 does type c charging is damaging or this specific condition make it damaging? 4 If I charge my laptop using type C port and charging port at the same time will it give fast charging(sounds little stupid but curiosity ) Please answer
I know this was a year ago but… 1. Type c is fine for light task. The concern in the video is graphically demanding games like Cyberpunk will fluctuate as far as when the game needs the extra cpu and or gpu power to run the game. This is when the cpu decides to allocate more power towards running the game and less towards charging the battery. In a game like this that fluctuation could draw more watts then the PD over USB C can deliver and in fact draw on your battery. 2. Same as 1. However since your charger is 65w then you could exceed that threshold a lot easier then with a 100w charger. 3. Same as 1. And 2. It’s the condition or what you are using the laptop for. 4. I don’t have the answer for this but Fast charging is not healthy for batteries anyway. Neither is 100% charging or letting the charge drop to 0%. There is a setting by asus software that allows you to limit the charge amount. (Mine is set to 80% max)
interesting video , i was thinking about gaming with type c charger the other day and came across this in saved videos. About the Fluctuations in charge and discharge i noticed it happens even when not gaming if you use type c charging ( This was on my phone , i think it would be similar for laptops). How's that any different? I feel like this video should have been a little longer and in-depth addressing more possibilities and with more test runs .
I don't think it will matter what battery percentage you have since you can still discharge the battery even at 60% if the system demands more power than the 100W allows.
Thanks for a useful and well done test! And even if the 100W isn't sufficient for gaming, I'm far from always gaming on this machine. It seems perfectly good for going to Starbucks with it to check emails, watch RU-vid and whatever else that doesn't draw 100W...
How do you even get to 100W PD with third party charger? I bought a Satechi 108w Charger for Zephyrus 15 2022 and it only worked at 65W cuz Asus only let its own 100w typeC charger do that.
So can we say: " It is the bast to use 100w chaerger for daily works, and maybe for prgorams demanding less calculating power than games. Like photoshop vs. ??" Do you think this type of usage will cause minimum battery damage?
This is very confusing considering my g14 also came with a type c charger, like the ones found on rog flow laptops, and those laptops are meant to be used while plugged in with the type c charger
Hi! Does it make a difference if i use my g14 with an omnicharge ultimate? It has a dc output which can be directly connected to a laptop’s barrel charging port. And apparently the “voltage, wattage” n everything can be set to a constant flow?
So what if Im using my laptop to do some excel work and browsing while on power saving mode with a 75W adapter ? Will that be good enough for the battery life ?
Great video 😀 , i had a question , when plug in through tha power adapter (the one came with it) does the power go to the battery or straight to gpu and cpu to save battery health?
It is technically impossible to charge and discharge at the same time. A voltage is applied to the battery, but if it is higher than the electromotive force of the battery, it will be charged, and if it is lower, it will only be discharged.
if the battery is runing in the mid range it should be able to run for 8 years no problem. but if your laptop is charging and discharging in the 100-80% and 0-20% it could and probebly will suffer damage in a couple of years. cars run in the mid zone for 10+ years constantly discharging and getting charged. if your laptop got a max 80% charge settings it will save a lot of life.
I think your calculations are a bit off. It is 1000 full charge cycles, and not just charge / discharge cycles. So I don't think so it's going to cause much harm.
Hi, thanks for making this video, it's very helpful. I have a question though and I am struggling to find the answer online, so I am hoping that you may be able to help. I have a Lenovo Legion 5 laptop, capable of 100W charging. I recently bought Anker's 120W power brick from their new series 7 lineup along with a 140w USB-C cable but for some reason, my laptop is only charging at 40w (according to Lenovo's software) with this configuration. Is there anything that you suggest trying based on your experience with type-c charging on laptops? Thanks in advance :)
Hey there! Awesome video! I want to get one of these to use while at university as I have long hours and don't always have the guarantee of a charging outlet. How will this affect simple note-taking and occasional 3D-Modelling, video and photo editing? Any reply would be greatly appreciated!
Probably avoid high intensity task where possible while using this method. I don't know what system monitoring software he used for this video, but you could probably find a way to check your system utilisation and power draw while performing these tasks to see if it would work within that 100W power limit.
