Free Mac battery
tools.
Tiny, fast utilities from the team behind Juicy. Everything runs in your browser, nothing gets uploaded, and none of it costs a cent.
Mac Battery Health Checker
Paste one Terminal command's output and get an instant report: true battery health, cycle count, wear, and how much life your battery has left.
Open the toolCycle Count Checker
See your cycle count against Apple's 1,000-cycle rating, how you compare to a typical Mac your age, and how many months of healthy battery remain.
Open the tool80% Charge Limit Calculator
Answer three questions about your charging habits and see how many extra years of healthy battery an 80% cap would buy you.
Open the toolBattery Replacement Cost Estimator
Apple vs repair shop vs DIY prices for your MacBook model, plus an honest answer to "is it worth replacing yet?"
Open the toolBattery Drain Diagnostic
Check your symptoms and get a ranked list of the most likely battery drains, with the exact fix for each one.
Open the tooliPhone Battery Health Checker
Enter your iPhone's capacity and cycle count to see if your battery is good for its age, and how long it has left.
Open the toolWhy free? We make Juicy, a Mac battery app. We figure the checks themselves should cost nothing, and if you like how we think about batteries, you know where to find us.
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