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How to Know If Your Laptop Battery Needs Replacing

If your laptop dies in under 2 hours on a full charge, shuts down unexpectedly, or the battery swells noticeably, it almost certainly needs a new battery. Use our battery health checker for a more detailed assessment.

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How to Know If Your Laptop Battery Needs Replacing — Your IT and Tech Mates
Quick Answer

Your laptop battery needs replacing if it no longer lasts more than 1–2 hours from full charge, drops percentage suddenly, or the device only works when plugged in. Use our battery health checker to confirm.

Guided help format

Start here: what to do before you decide

This guide is organised for quick decisions, safer checks and clearer next steps.

Quick answer

Plain-English local IT, tech support and small business systems help from Your IT and Tech Mates.

Risk levelMedium

Do the safe checks first, then get advice before approving parts, labour or replacement costs.

Best first stepCollect details

Keep the model, symptom, photos, error messages and timing together before asking for help.

Local helpMelbourne North

Use this guide first, then choose Quick Help or the most relevant local service page.

Stop

Do not keep forcing restarts, charging attempts or DIY fixes if the laptop has liquid damage, heat, scam pop-ups, strange noises or important files at risk.

Try

Write down what changed, check the charger or connection only if it is safe, and take photos of any message, damage or symptom.

Send

Send the laptop model, what happened, photos and your suburb through Quick Help so we can suggest the safest next step.

Repair or replace?

If the cost, risk or downtime looks high, compare assessment, repair, replacement and backup options before approving work.

Before you book

  • What changed before the problem started
  • Device model, account, system or service involved
  • Photos, screenshots, error messages or examples
  • Whether files, study, work or customer enquiries are affected

Helpful next pages

Related topics: laptop, battery

Updated
Best forpeople comparing DIY checks, repair or replacement
Quick answer

Laptop batteries usually need replacing when charge drops quickly, shutdowns become unpredictable, or the battery physically swells. This guide helps you separate battery wear from charger, software or heat problems.

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Sign 1: Short Battery Life

A new laptop battery typically provides 6–10 hours of real-world use. When that drops to under 3 hours, the battery has degraded significantly. Under 2 hours usually means capacity is below 60% — replacement is recommended.

Sign 2: Swelling or Bulging

A physically swollen battery is a fire hazard and should be replaced immediately. You'll notice the trackpad or keyboard lifting, or a visible bulge on the laptop base. Stop using the device and contact us urgently.

Sign 3: Unexpected Shutdowns

Sign 4: Inaccurate Battery Percentage

How to Check Battery Health

Not sure what to do next? Call or WhatsApp us for a free review — no obligation.

Common questions

How to Know If Your Laptop Battery Needs Replacing — FAQs

Laptop battery replacement typically costs $150–$280 including parts and labour. Use our battery cost estimator for a range based on your model.
On some older laptops with removable batteries, yes. For modern laptops with internal batteries, replacement requires opening the device — this is best done by a professional to avoid damaging other components.
If the laptop is otherwise in good condition and under 6 years old, a battery replacement adds 1–3 years of good use for a fraction of replacement cost.
Temporarily, yes. But a swollen battery is a safety hazard and should be replaced regardless of use pattern.

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If you have already tried the safe checks and still need help, call or WhatsApp for practical advice, clear quotes and honest repair-vs-replace guidance.

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