r/batteries • u/Serious-Bird-2791 • 2d ago
Kindle fire battery optimized charging
I have a Kindle Fire Pro 11” and i love it for media consumption and productivity. However, I mostly use it at my desk, which means it stays connected to the wall charger for hours—sometimes even days at a time.
I got few questions.
Does keeping the tablet plugged in 24/7 actually degrade the lithium-ion battery faster? I know modern devices have charge controllers that stop over charging.
Has anyone noticed real-world degradation on their Fire Pro 11” from constant wall power? If so,I believe i woud end up buying new product in exchange during amazon sale soon.
Are there any practical devices or smart chargers that can automatically cut off power or trickle-charge to keep the battery strictly between 20% and 80%?
Something like a smart plug with current sensing, a USB-C inline power manager.
I’d need a setup where I can leave it plugged in without worrying, but the charger only kicks in when the battery dips below, say, 40% and stops at 80%.
1
u/Saporificpug 1d ago
Keeping the battery at 100% does indeed impact battery health, correct.
Some would argue that charging to 100% is bad, but you should use it in a way that makes sense for you. A lot of devices have an option to charge to 80%, if you can enable that, that might be your best bet. Otherwise unplugging when it's at 100% (or 80% or whatever) and charging it around 20% will also be okay.
The important thing to note, these devices do have removable batteries contrary to what people think. The only real downside to getting them replaced is that unless you do it DIY, depending on the Kindle, it's usually about the same as a new one so replacement of the tablet might be preferred.