Repair or replace? Which upgrade pays off? Is the slowdown fixable or is it time? Plain-spoken maths and honest guides for everyday PC problems — type your question and get a straight answer in seconds. The full detailed report costs less than a coffee: $2.95.
Laptop batteries fade so gradually that you adapt to the loss without noticing. This health check makes it visible with one honest ratio: how long the battery lasts now against how long it lasted when new, plus the battery's age in years. The result is a health percentage with plain benchmarks — above 80% is healthy, 60-80% is aged, below 60% a replacement is worth pricing — and the verdict is honest about the two traps: buying a battery when the real problem is a power-hungry app or a 'best performance' mode, and paying for a battery that costs a third of what the whole laptop is worth.
Measure your laptop battery's real health — how long it lasts now versus when new, and whether a replacement battery is the honest fix or wasted money.
Above 80% is genuinely healthy, 60-80% is noticeably aged but workable, and below 60% the battery is degraded enough that a replacement is worth pricing. Below 40% it is near end of life — expect to stay near a charger.
Roughly $40-150 depending on the model; cheaper laptops often have cheaper batteries, and many are user-replaceable in minutes. Before buying, check the laptop's own value and age — a battery costing a third of the machine's worth may point to a new laptop instead.
Keeping it at 100% for weeks does accelerate ageing; most makers recommend keeping a plugged-in laptop between 20-80%. Modern laptops manage this reasonably well on their own, which is why age and cycle count matter more than any single charging habit.
Every tool answers instantly from our own knowledge and calculators — no AI wait, no account. Honest maths and plain guidance, always educational and never pushy about buying new gear: repair, upgrade, backup and security decisions explained in language a human actually uses. Results are estimates and guides, not guarantees, and nothing you type is stored. Want the deeper, personalised version? Each has a $2.95 full report.