Choose the job first
Battery health, remaining charge and current energy use answer different questions. Health estimates how much capacity remains as the battery ages. Charge is how full it is now. Energy use explains what the running workload is demanding. A tool that shows one does not automatically improve the others.
This is a guide to documented features, not a lab test or a ranking by runtime. We did not install these competitors or measure extra battery hours. Prices, releases and requirements below were checked on the writing date; no exchange-rate conversions are used.
| Your question | Start with | Add a tool when |
|---|---|---|
| Is my battery wearing out? | Battery Health in System Settings. | You want saved diagnostics, more detail or another device’s battery. |
| Can I stop charging at a chosen level? | macOS Charge Limit on supported Macs. | You need additional charge automation or older supported hardware. |
| Which app is using energy? | Activity Monitor’s Energy tab. | You want app estimates alongside system watts and battery context. |
| Can I keep more readings in view? | The built-in battery menu. | You need customizable hardware and sensor modules. |
Free options already on your Mac
System Settings: open Battery and review Battery Health. Use the battery health guide to interpret condition, capacity and cycles. A single percentage is an estimate; a service warning and a real runtime problem deserve more attention than a small day-to-day change.
Charge Limit: Apple supports a selectable 80–100% limit on Apple silicon with macOS Tahoe 26.4 or later. Optimized Battery Charging is a separate feature that learns your routine. The Mac can occasionally charge fully to maintain its state-of-charge estimates. See AlDente vs macOS Charge Limit before adding another controller.
Activity Monitor: the Energy tab shows Energy Impact, a relative measure rather than watts, and whether an app is preventing sleep. On a laptop, 12 hr Power is an average of energy impact for that window or since startup. Compare similar work; this number is not an app’s measured watt-hour bill.
The battery menu: it already shows charge and charging status. If percentage is all you need, enable the built-in percentage. Installing a monitor for the same number adds little.
Where coconutBattery is stronger: device diagnostics
coconutBattery is useful when you want a battery reader for the Mac and for iPhone or iPad. Its free mode provides device details and saved health information; Plus extends functions such as wireless mobile-device connections, additional history analysis and reporting.
The checked version is coconutBattery 4.4, 9 September 2026, requiring macOS 12 or later. Its official material shows use on an Apple silicon Mac. A separate complete Intel compatibility statement was not found on the checked product page, so verify an older Mac before purchasing.
The US store quoted $12.95 once for Plus Standard, including 4.x updates, and a currently discounted $17.95 once for Plus Lifetime, including future Plus versions. The maker says licenses cover unlimited devices. Plus has a 10-launch trial, not a ten-day trial.
Watch out for: some SSD details depend on the device, and mobile-device diagnostics are a different task from finding an energy-heavy Mac app. Our Tend vs coconutBattery comparison separates those uses.
Where AlDente is stronger: charging control
AlDente actually controls charging. Its Free edition includes a charge limiter and manual discharge; Pro adds functions such as automatic discharge, heat protection, Sailing Mode and scheduled charging workflows. Choose it because you need those controls, not because a monitor says your battery is imperfect.
The official release history lists 1.39.4, 23 September 2026. The current FAQ supports macOS 12 through 27, all Apple silicon MacBooks and most Intel MacBooks from 2013 onward; check the exact model list. Beta macOS releases are not officially supported.
The maker’s direct pricing is €11.49 per year or €23.99 lifetime. One key permits three simultaneous macOS user-account activations across up to three Macs. Current AlDente Free and Pro are proprietary; the old public source repository does not make the current product open source.
Watch out for: two independent charge controllers can conflict. Follow the maker’s current configuration instructions if you choose AlDente, and understand how to return to macOS’s charging behavior. Do not routinely force deep discharge just to chase a better-looking health estimate. See Tend vs AlDente and whether a charge limit fits your routine.
Where Stats is stronger: a free hardware menu bar
Stats combines battery information with CPU, GPU, memory, disk, network, sensors, Bluetooth and a clock. The maker lists battery health, cycles, remaining time and power source. It is a broad system monitor when you want several hardware readings visible together.
Stats 3.0.22, 18 October 2026, is free and MIT-licensed open source. The maker lists Intel and Apple silicon, macOS 12 or later, with stable macOS releases supported. Its fan-control feature is labeled legacy and not maintained; sensor monitoring and supported control are separate questions.
Watch out for: a complete alert-trigger catalog and a universal history-retention period are not specified on the checked feature page. Confirm a particular requirement instead of assuming every module stores a long-term record. See Tend vs Stats for the detailed comparison.
Where iStat Menus is stronger: configurable paid modules
iStat Menus offers detailed CPU, memory, disk, network, sensor and power views, with extensive menu bar configuration. Its battery and Bluetooth-device readings sit within that wider hardware toolset. It is relevant when the battery is one of many things you want to monitor.
Bjango lists iStat Menus 7.5, 14 September 2026, with macOS 13.5 or later for the direct version and a 14-day trial. The US Mac App Store edition is $11.99 once, with optional weather purchases, and requires macOS 14 or later. Bjango supports Apple silicon and Intel Macs.
Watch out for: editions differ. Bjango’s edition-specific help says the App Store version cannot control fan speeds and needs a helper for some readings, even though its generic store description currently mentions fan control. Use the edition-specific help for that decision. This page does not claim a measured performance advantage for either edition.
Where Tend fits: apps, energy and battery context
Tend brings current app CPU, memory and estimated watts together with system power and battery information. Its app list covers your current user; root and other system-user processes are not individually named and can contribute to the macOS share. Helpers inside the same outer app bundle are grouped by executable path, not guessed from their parent.
Free includes battery health and cycles, Battery Coach, supported Charge Limit status, CPU temperature, the Thermals widget and 24-hour energy period totals. Pro adds daily battery-health history, 7- and 30-day energy periods, every available sensor and fan reading, and alerts. Period totals do not reconstruct historical per-app wattage.
Tend requires Apple silicon and macOS 15 or later. It does not set charge limits, control charging or set fan speeds. Use macOS or a charging app for those actions. It also cannot restore chemical battery capacity or guarantee extra runtime.
If you are investigating an actual short-runtime problem, start with the battery drain guide. Keep screen brightness, accessories and workload in mind before attributing a change to one app or one setting.
Questions
What is the best free battery monitor for Mac?
Start with Battery settings, the battery menu and Activity Monitor. For additional detail, coconutBattery has free device diagnostics, Stats has free hardware modules, and Tend has free app-energy estimates and battery context. Choose the missing function.
Can a battery app improve battery health?
An app can show information or manage charging, but it cannot restore lost chemical capacity. Charge behavior and temperature can affect aging; no app here is promised to prevent normal wear or add a measured number of hours.
Do I need AlDente if macOS has Charge Limit?
The built-in limit may be enough on Apple silicon with macOS 26.4 or later. AlDente is relevant for additional documented charging controls or supported older models. Check compatibility and avoid competing controllers.
Related guides
Check battery health
Interpret condition and capacity.
Charge limit choices
Compare Apple’s limit with AlDente.
Sources
- Apple, Optimized Battery Charging and Charge Limit and Activity Monitor energy readings.
- coconut-flavour, coconutBattery features, release and requirements and its linked US Plus store, checked with one license item selected.
- AppHouseKitchen, features, pricing, compatibility and license FAQ and releases.
- exelban, Stats features and requirements, README and license and releases.
- Bjango, iStat Menus, version history, edition differences and US App Store listing.
- Tend, Free and Pro features and prices.
Understand your battery and app energy
Tend is free to download. Pro is $1.99 a month, $12.99 a year with a 7-day free trial, or $29.99 once.