Freedom251 › Hardware Monitoring Software
BatteryBar
What BatteryBar is
BatteryBar is a Windows battery meter that monitors battery status and displays it in the taskbar. It retains historical battery data to estimate the time remaining on a battery. Its status popup can show percentage, capacity, charge or discharge rate, power state, estimated full lifetime, AC connection, and battery wear. The maker calculates wear by comparing full capacity with designed capacity. Some batteries do not report charge or discharge rate, or report only one of those rates, so those readings may not be available. BatteryBar has a free version and a Pro version. Pro can show a popup and play a sound when the battery is low, with another notification at critical level, and offers 20 settings for customization. The listed supported systems are Windows XP, Vista, and 7 in 32-bit and 64-bit editions, with a system battery required. Windows XP also requires .NET Framework 2.0. BatteryBar Pro costs $4, paid once for a lifetime license covering one computer; bulk discounts are listed for 10 or more licenses.
Who it suits
BatteryBar may suit Windows users who want battery details in the taskbar and a historical estimate of remaining time. Pro adds alerts and settings for users whose systems meet its listed requirements.
What it does well
- Free version is available.
- Displays battery details in the taskbar popup.
- Uses historical data to estimate remaining time.
- Pro adds low and critical battery alerts.
- Pro includes 20 configurable settings.
What to know first
- Listed supported systems are Windows XP, Vista, or 7.
- A system battery is required.
- Windows XP requires .NET Framework 2.0.
- Some batteries do not report charge or discharge rates.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| BatteryBar Pro | Lifetime license · One license per computer · bulk discounts for 10 or more licenses | $4, paid once |
As osirisdevelopment.com lists them, read 9 Oct 2026. The maker's own page has the final word.
Verdict
BatteryBar provides taskbar battery monitoring and estimated remaining time, with Pro adding alerts and configuration options. Check the listed Windows requirements and whether the battery reports rate data before relying on those readings.
Facts from BatteryBar's own pages
- Alert channels
- popup window,sound · osirisdevelopment.com, 22 Sept 2026
- Battery data limitation
- Some batteries do not report charge or discharge rate, or report only one of those rates. · osirisdevelopment.com, 9 Oct 2026
- Battery details
- The status popup displays battery percentage, capacity, charge or discharge rate, power state, estimated full lifetime, AC connection, and battery wear. · osirisdevelopment.com, 9 Oct 2026
- Battery wear
- Battery wear is calculated as 1 minus full capacity divided by designed capacity. · osirisdevelopment.com, 9 Oct 2026
- Compatibility
- The Pro page lists Windows XP, Vista, and 7, both 32-bit and 64-bit, and requires a system battery. · osirisdevelopment.com, 9 Oct 2026
- Free and Pro versions
- The product is available in a free version and a Pro version with additional features. · osirisdevelopment.com, 9 Oct 2026
- Free plan
- Yes · osirisdevelopment.com, 22 Sept 2026
- Limit
- The maker notes that not all batteries report charge or discharge rate data. · osirisdevelopment.com, 9 Oct 2026
- Low battery alerts
- The Pro version can show a popup and play a sound at low battery, with a second alert at critical level. · osirisdevelopment.com, 9 Oct 2026
- Pro alerts
- BatteryBar Pro can show a popup and play a sound for low battery, with a second notification at critical level. · osirisdevelopment.com, 9 Oct 2026
- Pro customization
- BatteryBar Pro allows users to change 20 settings. · osirisdevelopment.com, 9 Oct 2026
- Purpose
- BatteryBar is a battery meter for Windows that monitors battery status and displays it in the taskbar. · osirisdevelopment.com, 9 Oct 2026
- Runtime estimates
- BatteryBar keeps historical battery data to estimate the time remaining on a battery. · osirisdevelopment.com, 9 Oct 2026
- Settings
- The Pro version provides 20 settings for customization. · osirisdevelopment.com, 9 Oct 2026
- Support
- The Pro page directs users to its forum and lists [email protected] as an email contact. · osirisdevelopment.com, 9 Oct 2026
- Supported platforms
- Windows XP,Vista,or 7; 32-bit and 64-bit editions · osirisdevelopment.com, 22 Sept 2026
- System requirements
- The Pro page lists Windows XP, Vista, or 7, 32-bit and 64-bit support, .NET Framework 2.0 for Windows XP, and a system battery as requirements. · osirisdevelopment.com, 9 Oct 2026
- XP requirement
- The Pro page lists .NET Framework 2.0 for Windows XP. · osirisdevelopment.com, 9 Oct 2026
Where BatteryBar stands on Freedom251
- Hardware Monitoring Software#17 of 59
- Hardware monitoring tools#42 of 59