Windows is always bootable when connected to AC power Thermal conditions are the exception in any good system design. In this scenario, heat may be reduced by slowing or eliminating battery charging altogether. For example, the battery may charge at a slower rate when the system is completely off and connected to the charger and charge at a faster rate when the device is booted and ACPI firmware can be used to monitor the battery periodically.įinally, a design may charge the battery at a lower rate when the system is in a thermal condition. We do not recommend a design that charges the battery at a reduced rate when Windows or the firmware has not been booted or running. Charging may stop once the battery is fully charged or if a fault condition occurs. This expectation holds true across all of the power states including active (S0), Sleep (S3), Hibernate (S4), shutdown (S5), hard off (G2/G3) and S0 Idle. As such, the hardware must always attempt to charge the battery whenever the device is connected to the charger regardless of the power state. Users expect their device to charge whenever it is connected to the charger. If there is a battery or thermal fault condition, charging is also automatically stopped.Ĭharging occurs when connected to the charger This is done without requiring firmware, Windows, drivers, or other software running on the main CPU(s). The hardware automatically stops charging when the battery is completely charged. Windows 10 Mobile systems may require the support of a UEFI charging app and/or other software components in order to charge the battery.Ĭharging stops automatically when the battery is fully charged or when a fault occurs. This requirement only applies to Windows 10 for desktop editions systems. The hardware charges the device's battery without requiring firmware, Windows, drivers, or other software running on the main CPU(s). If the device is in the S5 (shutdown state), it can always boot into Windows when connected to the charger, regardless of the battery charge level and presence of the battery, if the battery is removable.Ī battery must be present and have enough charge level in order for the system to boot up. Windows 10 for desktop editions (Home, Pro, Enterprise, and Education): Windows can always boot when connected to the charger. As a result, users have a consistent and quality experience with battery charging.Ĭharging always occurs when connected to the charger.Įxcept for cases of battery failure, a device running Windows is always capable of charging the battery whenever it is connected to the charger. All devices running Windows have a consistent battery charging experience, regardless of form factor, instruction set, or platform architecture. This topic covers recommendations for battery and charging in Windows 10. It is recommended that you replace the battery.In this article Battery charging user experience It is recommended that you replace this battery.īattery no longer operates, or battery status cannot be determined. Poor-Battery no longer provides sufficient power. It is recommended that you purchase a new battery soon. Good-Battery can charge normally however, you may notice reduced operating time because long-term battery life is decreasing.įair-Battery can charge normally however, it is near the end of its usable life. NOTE: Battery health information is available only if a Dell battery is attached to your laptop.Įxcellent-Battery is operating at maximum capacity. Check contacts, power plug, and cables.Consider battery replacement for longer operating hours on battery.ĮPSA: Battery - The battery cannot provide sufficient power.See the Dell knowledge base article How to Troubleshoot Dell Laptop Battery Issues.See the Dell knowledge base article How to improve the performance of a Dell laptop battery.The battery charges but may experience shorter operating hours. Ensure that the battery is installed correctly.įor laptops with a nonremovable battery, contact Dell Technical Support for repair options.ĮPSA: Battery -The battery is reaching the end of its usable life.Table 1: SupportAssist or ePSA preboot diagnostic test error codes.ĮPSA: Battery - The battery is not installed. You may be prompted to install or update the SupportAssist program, if so, follow the prompts.įigure 3: Animated screenshot of battery health status in ePSA Preboot System Assessment diagnostics.Dell also offers an online diagnostics test, go to the Online Battery Diagnostics page.
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