Every phone battery wears out — it's the one part guaranteed to degrade with time and charging cycles. If your phone dies by mid-afternoon , shuts down suddenly (often in the cold or at 20-30%), charges slowly , runs hot, or the screen is bulging , a fresh battery will make it feel like new again. At Repair Mate® a battery replacement is one of our quickest, best-value repairs. Signs you need a new battery Battery drops fast or doesn't last the day like it used to. Phone shuts off suddenly even with charge left, especially in cold weather. iPhone Battery Health is well below 80%, or you see a "Service" battery message. The phone gets hot, charges slowly, or the percentage jumps around. The screen or back is lifting — a sign of a swollen battery , which needs urgent attention. Swollen battery? Stop using and charging the phone. A swollen battery is a safety risk — bring it in promptly and don't puncture or press on it. Types of replacement battery — what's the difference? Not all batteries are equal, and the grade you choose affects price, lifespan and performance. We explain your options honestly so you can pick what suits your budget: Aftermarket A cost-effective, quality-checked replacement made by third-party manufacturers. The most affordable option and a great choice for older phones or a tight budget. Capacity and longevity are good, if generally a step below genuine. High-Quality / Premium cell A better-grade aftermarket battery using higher-quality cells (brands such as premium third-party makes). It closely matches original capacity and lifespan at a mid-range price — our popular middle option for the best value. Genuine / Service Pack The original manufacturer battery (or an official service-pack part), identical to what came in the phone. Best capacity, longevity and compatibility — including correct battery health reporting on iPhones — at the highest price. Ideal for newer or premium devices you plan to keep. Grade Cost Best for Aftermarket Lowest Older phones, budget repairs High-Quality Mid Best value, most devices Genuine / Service Pack Highest Newer/premium phones, longest life Why batteries wear out Lithium-ion batteries age by charge cycles (one full 0-100% worth of charging), by heat, and by time. After roughly 500 cycles — often 1.5 to 2 years of normal use — most batteries hold noticeably less charge. It's completely normal wear, not a fault, and replacing the battery is far cheaper than a new phone. How we replace it Battery health check to confirm the battery is the cause (not a rogue app or a charging-port issue). Choose your grade with an upfront quote. Professional replacement with proper adhesive removal, a genuine-fit cell, and safe disposal of the old battery. Test & warranty — we verify charging and health, backed by our warranty. Where to get a battery replacement — Australia-wide In-store at Carnegie (Melbourne, VIC) , Newcastle (NSW) , Brisbane (QLD) and Hobart (TAS) , or via our Australia-wide mail-in service to Sydney, Perth, Adelaide, Canberra, Gold Coast, Darwin and beyond. Book a battery replacement Call 03 9840 0071 Frequently asked questions Which battery grade should I choose? For an older phone on a budget, aftermarket is great value. For most people we recommend our high-quality option for the best balance of price and lifespan. For a newer or premium phone you'll keep for years, genuine/service-pack gives the best capacity and correct health reporting. We'll advise based on your device. Will a new battery restore my iPhone Battery Health to 100%? Yes — a fresh battery starts at full health/capacity. Note that with some aftermarket cells the on-screen "Battery Health" percentage may not display, even though performance is restored; genuine/service-pack batteries report health correctly. Is a swollen battery dangerous? It can be. Stop charging and using the phone, don't press or puncture it, and bring it in promptly. We remove and dispose of swollen batteries safely. How long does a battery replacement take? Usually same-day and often while you wait in-store; mail-in is turned around quickly. Will I lose my data? No — replacing the battery doesn't affect your storage or data. How long will a new battery last? Typically 1.5-2 years of normal use before noticeable wear, similar to the original. Avoiding heat and constant 100% charging helps it last longer. Related repair guides Not the repair you were after? Repair Mate® also handles these common faults across Australia — same-day where possible, warranty included: Phone Screen Repair — cracked glass, lines, black or no-touch screens. LCD & Display Repair — black patches, bleeding, flickering displays. Charging Port Repair — won't charge or only charges at an angle. Liquid & Water Damage Repair — got wet, corrosion, won't turn on. Phone Camera Repair — blurry, black or cracked front & rear cameras. Microphone Repair — callers can't hear you, no sound on video. Headphone Jack Repair — no sound in headphones, stuck in headphone mode. Power & Volume Button Repair — stuck, loose or unresponsive buttons. Speaker Repair — no sound, crackly or muffled speakers.
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