#Battery status discharging how to
#Battery status discharging full
#Battery status discharging android

How to check the battery status of your Xiaomi smartphone.How to check the battery status of your Samsung smartphone.

#Battery status discharging android

Find out which solution to choose on Android among the multitude that exists, some of which are specific to each manufacturer like Samsung or Xiaomi. If the ebay link is dead, I will try to find another.'Why does my phone stop charging?' This is a hard question to answer if you're one of the extreme majority of users who own an Android smartphone with a non-removable lithium battery instead of a Fairphone 4.įortunately, it is possible to know in what condition your smartphone's battery is in to consider changing it or not. I have not yet used the fuel guage from the second link so I can't say whether it actually works as advertised. It differs from the first link as the first one is a charger as well and protects from over charge and over discharge and protects from short circuit. It measures the impedance and current of your battery pack. The second link is to an interesting looking fuel guage.

#Battery status discharging full

However, I have only done full charge/recharges maybe 5 or 6 times and after that it has been 30 or 40 partial charges/recharges. I doubt it is coloumb counting or I think that it would get more accurate. It has problems with accuracy under about 3.5 volts as the batteries tend to be closer to empty than the pcb thinks, so it always reports abouts 30% remaining when it is closer to 20%. It is far from perfect, but more accurate now. After that it got more and more accurate with each charge/discharge cycle. On the second discharge, it read the capacity as 0% at 3.5 volts, and still allowed discharge until about 3.1 volts before it stopped the discharge. When first connected it charged the battery to 4.2 volts and shut down, but read the capacity as only 85%. Like I said before in the comments, the first one does more than just measure voltage and then approximate the capacity. I'll put the links in an answer so I don't run out of room again. Also, on batteries with multiple jacks, you'd have to have a separate counter for each output you used. This would probably be able to track total energy charged/discharged, but it wouldn't have a reference point, so it still wouldn't be able to tell you remaining charge. Wire a coulomb counter in series with the battery. Even close to being dead, it'll probably still read 5V. Using an ADC to directly read the voltage on the battery output, but this probably wouldn't work since the output from the battery is regulated at 5V. If you wanted to wire one of these into a microcontroller or SBC so the system could report remaining charge, is the only option to break one open, hope you don't destroy it in the process, and hope the charging circuitry is hackable? Unfortunately, they're designed for consumer uses like recharging cell phones, and not for tinkering, so there's no formal interface for getting battery status. Meanwhile, there are a ton of relatively cheap, small, high capacity Lipo battery packs with a convenient USB jack for charging and discharging. What's the easiest, least intrusive way to monitor voltage, charging status, and remaining charge of a USB battery pack?īattery packs and charging circuits for mobile projects can be complicated and expensive to design.