Health section
This section represent the health of your battery based on the charging records (explained in Charging section). Each time you charge your phone Battery Guru record the estimated battery capacity (you can see this in the Battery capacity card at the bottom of the Charging section).
During calibration we'll identify your battery design capacity. If your battery capacity couldn't be found, if it's inaccurate, or if you bought a different battery that doesn't have the same design capacity, you can manually change the design capacity in the above mentioned section of the charging tab.
During calibration we'll identify your battery design capacity. If your battery capacity couldn't be found, if it's inaccurate, or if you bought a different battery that doesn't have the same design capacity, you can manually change the design capacity in the above mentioned section of the charging tab.
- Battery Health
Battery health can show you how much capacity (mAh) your battery has lost over time. To determine the battery capacity, Battery Guru uses last 5 charges that have battery charged for at least 80% (e.g. from 15% to 95%). A lower charging start percentage is more precise.
How do we measure battery health?
During charging, we constantly measure the power added to the battery and the level change, and with this information, we can create an estimate of how much energy can fit into a full battery. But as the charge level of the battery is hard to calculate, it isn't completely accurate, and multiple samples are needed to increase accuracy.
Battery health can show you how much capacity (mAh) your battery has lost over time. To determine the battery capacity, Battery Guru uses last 5 charges that have battery charged for at least 80% (e.g. from 15% to 95%). A lower charging start percentage is more precise.
How do we measure battery health?
During charging, we constantly measure the power added to the battery and the level change, and with this information, we can create an estimate of how much energy can fit into a full battery. But as the charge level of the battery is hard to calculate, it isn't completely accurate, and multiple samples are needed to increase accuracy.
It's recommended to fully charge the battery once a week. This will provide an optimal and more accurate assessment of the battery's condition and recalibrate the charge controller.
This represents the info on where was the last finished charge and in the second card it shows last full charge which is valid of health estimation.
Devices frequently report that the battery has reached 100% before it actually is. Please keep the charger plugged in until Battery Guru indicates that the charging cycle is finished.
This usually takes no more than 30 minutes. Valid health check sessions will get a badge and will be processed immediately.
Read more about valid charging sessions on Charging section
This represents the info on where was the last finished charge and in the second card it shows last full charge which is valid of health estimation.
Devices frequently report that the battery has reached 100% before it actually is. Please keep the charger plugged in until Battery Guru indicates that the charging cycle is finished.
This usually takes no more than 30 minutes. Valid health check sessions will get a badge and will be processed immediately.
Read more about valid charging sessions on Charging section
Healthy charge
- Check your charging habits!
Battery Guru recommends a healthy charge, where a charge is performed at 20% and until 80%. Do not charge your device more than 8 hours, as this may incur an overcharge on the battery!
Card represents the statistics of past charging sessions separated in Normal, Healthy and Overcharged.
Bar below shows the thresholds of a healthy charge with some useful info on the card bottom where it'll say how the ongoing charging session is going.
- Check your charging habits!
Battery Guru recommends a healthy charge, where a charge is performed at 20% and until 80%. Do not charge your device more than 8 hours, as this may incur an overcharge on the battery!
Card represents the statistics of past charging sessions separated in Normal, Healthy and Overcharged.
Bar below shows the thresholds of a healthy charge with some useful info on the card bottom where it'll say how the ongoing charging session is going.
FAQ
I have charged my device already but nothing shows in health card, what to do?
You just need to wait for Battery Guru to gather some more data. As said above, we only use charge sessions with at least 20% charged to increase accuracy
My battery health is above 100%, is that a bug?
No, it's not, battery manufacturers usually guarantee at least 300 charge cycles before end of life (~20% capacity loss), to ensure they hit this limit, some batteries have start with a capacity larger than specified on the battery.
There are also manufacturing variation between each batches, the stated capacity doesn't have to exactly match the measured capacity. For example, some battery specification provide 5000 mAh typical, 4750mAh minimum, and how much actually fits into you sample depends a bit on luck.
There are also manufacturing variation between each batches, the stated capacity doesn't have to exactly match the measured capacity. For example, some battery specification provide 5000 mAh typical, 4750mAh minimum, and how much actually fits into you sample depends a bit on luck.
My battery health is ~70%, what to do?
Well, same answer as above - the stated capacity is just a typical capacity for the model, it doesn't have to exactly match the battery you're holding. In addition to the manufacturing variance, all batteries degrade with usage and time. There's nothing to do from a software side.
Battery health is showing below 50% or near 200%, is my battery dead?
It doesn't mean that your battery is that bad, maybe you have missed info at the calibration screen where Battery Guru ask you to tick whether your device have dual battery configuration or not. In case that your device have dual battery configuration and you forgot to tick the box health will likely be halved by half. Same thing happened if you tick the box for dual battery configuration on devices with single battery, health will be doubled.
There are two things to do in this situation:
- Re-install app and tick/untick the box for dual battery configuration on calibration screen
- Go to the Section 1: Charging then to battery capacity card and set capacity, after pressing the button dialog will appear so you can tick the box. After applying the setting you need to wait 7 days as the health is calculated just for that period of time.
There are two things to do in this situation:
- Re-install app and tick/untick the box for dual battery configuration on calibration screen
- Go to the Section 1: Charging then to battery capacity card and set capacity, after pressing the button dialog will appear so you can tick the box. After applying the setting you need to wait 7 days as the health is calculated just for that period of time.
Design capacity is not my devices real capacity, what to do?
At the calibration screen BatteryGuru trying to get the Design capacity from your device, if you find it not correct, please correct it. Go to the Section 1: Charging then to battery capacity card and set capacity, after pressing the button dialog will appear. On devices with dual battery configuration the capacity will be mostly detected just for one cell (50%), please correct it in order to get valuable statistics. At the moment there is no official way of getting that from the Android device.