So it could just be reporting a fake wear level to Windows. This is just one of the wear-prevention strategies out there, and I don't know if the ASUS X205TA is using it.
#Batterybar pro battery wear windows
This prevents Windows from charging it past 90%, thus preventing a deep cycle. So the battery may be 4000 mAh when new, but the battery tells Windows it has 10% wear. One of the ways I've seen some devices do this is by "faking out" Windows into thinking the battery has more wear than it really does. Newer laptops (and phones, and electric vehicles) are programmed not to fully charge nor discharge the battery in order to prevent wear and maintain battery longevity. Http //learn/article/how_to_prolong_lithium_based_batteries Shallow cycles (say, charging to 70% and discharging to 30% put almost no wear on the battery. That is, charging to 100% and discharging to 0%. That said, battery wear is mostly caused by deep charge cycles. If the battery's capacity when new was 4000 mAh, and its current capacity is only 3600 mAh (90% of new), then it has a battery wear level of 10%. By contrast, my Surface Pro 4 has had nearly 60 charge cycles alreadyĪnd still has capacity above the originally designed.As a battery gets older, it loses capacity.
To do that open an admin command prompt and type:Īs you can see, my device has had only 9 charge cycles but has lost over 1000mWh of its original capacity (not sure why) so I'm monitoring this carefully as it is still under warranty. You can keep an eye on the state of your battery by running battery reports regularly. If you're storing the device for a prolonged period of time you should charge the battery to roughly 50% and store Also do not let your device run out of charge and leave it for too long as the battery may go on a deep discharge that you can't recover from.I had this problem with a MacBook Pro that I seldom used unplugged and after a couple of years, having done 60 charge cycles, the battery was Keeping your device on charger all the time, without allowing it to discharge, will eventually burn your battery.The sweet spot is as you mention, to discharge the battery down to something in between 50% - 80% and recharge it from there.Modern Li-Ion batteries have smart controllers that will normalize the use of the cells so to not use always the same and burn them quicker. Use the device as normal and do not worry about fully discharging or re-charging the battery regularly.There are things you can do that will accelerate the deterioration of your battery capacity but generally, you should just use the computer as normal The first thing to accept is that your battery has a useful life that is ticking, no matter what you do. So what is best to do: Keep it at mains and 100% level indicated as much as possible, or - if not - what is the best to do for a Surface 3? Maybe a Microsoft engineer can provide some clues?
#Batterybar pro battery wear full
It was also suggested that the Surface battery charging mechanism actually does slight discharging/recharging when connected full time (so 100% charged reporting does not correspond exactly to that in reality), (typically keeping the battery at 50% - 80%). It is stated that a fully charged battery is not good for its internal chemistry, and therefore it is good to have (at least moderate) discharge/recharge cycles However, my policy does not seem to agree with other info that can be found at various places.
Microsoft advises to run the surface battery down at least once a month, but I assumed that was in order to calibrate the battery indicator so that its predictions are reasonable. I assumed that it is the discharging/recharging What I currently do is to avoid cycling (discharging/charging) the battery as much as possible, by keeping it connected to mains whenever easily possible (and as a consequence the battery level indicates 100% most of the time). (Very happy Surface 3 owner here, so want to keep it in useful state as long as possible) Hello, I try to find the best way to maximize the battery's life span, but I do not see decisive information on what is best.