# HeroBook Pro extreme battery drain **URL:** https://forum.chuwi.com/t/herobook-pro-extreme-battery-drain/12374 **Category:** Herobook Pro **Created:** [July 13, 2020, 8:31pm UTC](https://forum.chuwi.com/t/herobook-pro-extreme-battery-drain/12374 "2020-07-13T20:31:54Z") **Posts on this page:** 1 **Showing post:** 6
### Author: ![EndlessBiginner](https://avatars.discourse-cdn.com/v4/letter/e/e480ec/32.png) [@EndlessBiginner](https://forum.chuwi.com/u/EndlessBiginner) #### Post date: [February 4, 2021, 3:06pm UTC](https://forum.chuwi.com/t/herobook-pro-extreme-battery-drain/12374/6 "2021-02-04T15:06:28Z")
Hi. What I can write is Windows cannot decide if battery has enough charge, because BIOS returns no value about charged energy in the battery. (“CAPACITY REMAINING” tells “-”, that is invalid value). According to Microsoft, many CHUWI products are not compliant with Windows ACPI implementation. As a result, PC is very unstably working without AC adapter. > **[ACPI battery and power subsystem firmware implementation](https://learn.microsoft.com/en-us/windows-hardware/design/component-guidelines/acpi-battery-and-power-subsystem-firmware-implementation)** > > This topic details how the platform should expose power subsystem information to the Windows power manager. Regarding battery, I think he is right (see topic below). > [@Lapbook Pro Battery bar problem](https://forum.chuwi.com/t/lapbook-pro-battery-bar-problem/20026): > > The battery is charging normally and I get some 7 hours backup with a 100% load. Now starting on battery I get some 30 seconds 100% indication and next 39% and a bit later 0% and the laptop shuts down. If I disable the device in device manager (ACPI compliant control method battery), everything works fine, but without the battery bar indication. Is this ACPI hardware part of the battery hardware or is there a software problem? Please help, Thanks… --- _[View the full topic](https://forum.chuwi.com/t/herobook-pro-extreme-battery-drain/12374)._