#LIGHT LINUX FOR TABLET SERIES#
You have 60W chargers usually for systems with max power draw of the CPU+GPU that can reach around 200W peak and in the mid to high 1XXW sustained if you have a DTR/high-performance “mobile” CPU + dGPU.Įven if your laptop comes with a 90W charger it’s still a problem because it’s not enough to power a 65W series H CPU and a high end GPU that draws another 80-120W. It’s really not, especially for high end models if you are stressing your hardware and it’s not an awfully thermally limited design you’ll drain the battery even when you are connected to the charger. I have a healthy fear/respect of high capacity and high current LiPo batteries.) They'd also catch into unextinguishable fire in big crashes and occasionally while charging. They'd end up too hot to touch, and start to decline to the point of not being race competitive within 20 or 25 cycles. (Note: I'm also quite familiar with abusing LiPo batteries way past safe limits, I raced FPV quadcopters 5-6 years back, and in my worst excesses, I'd be aiming to completely drain a flight pack in ~2 minutes. If it dies on me tomorrow, I'll be happy enough with the use I got out of it and the tradeoff of time I spent futzing with it. If I was aiming to maintain the best possible range in an electric vehicle, I'd probably pay much more attention to max charge and min discharge levels, but "the simplest possible thing" has been working well enough for me to just leave it alone. Keep in mind my goal here is less "extend the life of the battery", and more " prevent the battery from swelling up and damaging the device/catching fire", but I suspect there's a fair bit of crossover between those goals, since I've not needed to increase the charge time in response to any battery capacity decrease over 5 years (which in retrospect surprises me somewhat). Charge it long enough and regularly enough to keep it running, but at the low end of that spectrum. Don't leave it on charge 24x7, that'll kill it fairly quickly (~9 months in one data point of mine).
I've come to doubt the details there are important. I honestly have no idea how low or high the charge level gets, just that I haven't needed to wake it back up from a shutdown in over 4 years. I just checked now, it charged for an hour overnight finishing ~10.5 hours ago, and is currently saying 59% charge. I recall setting it to 45mins because the docs says the iPad gets 80% charge in 1 hour, and it'd occasionally run down and switch off, so I bumped it up to 1hr and haven't touched it since. The timer switch I grabbed to do my proof of concept only has 15min resolution (it's a weird old mechanical one where you move plastic pins in the stop/start time rings). I'd been intending to aim for 20%-80% cycles, because I read that's "good for lithium batteries".
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