Battery Replacement in Kennesaw, GA
A dying battery is one of the most frustrating things that can happen to a phone or laptop — especially when the device itself is otherwise perfectly fine. At MarTech in Kennesaw, we offer professional battery replacement for iPhones, Samsung Galaxy phones, and MacBooks. We use quality replacement batteries and test every device thoroughly after installation so you leave with a device that holds a full charge again.
iPhone Battery Replacement
Apple’s iPhones are designed to last for years, but the battery isn’t built to keep up forever. If your iPhone shuts down unexpectedly, drains within a few hours, runs hot, or your Battery Health in Settings is below 80%, it’s time for a replacement. MarTech replaces iPhone batteries quickly — most are done in under an hour — and we test charging performance and battery health after every swap.
iPhone models we service include:
- iPhone 17, iPhone Air, 17 Pro, 17 Pro Max
- iPhone 16, 16 Plus, 16 Pro, 16 Pro Max
- iPhone 15, 15 Plus, 15 Pro, 15 Pro Max
- iPhone 14, 14 Plus, 14 Pro, 14 Pro Max
- iPhone 13, 13 Mini, 13 Pro, 13 Pro Max
- iPhone 12, 12 Mini, 12 Pro, 12 Pro Max
- iPhone 11, 11 Pro, 11 Pro Max
- iPhone XS, XS Max, XR, X
- iPhone SE (all generations)
- iPhone 8, 8 Plus, 7, 7 Plus, 6s, 6
Samsung Battery Replacement
Samsung Galaxy phones use high-capacity batteries that degrade over time with daily charging cycles. When your Galaxy starts losing charge rapidly, takes forever to charge, runs unusually warm, or the battery appears swollen, replacement is the right move. We replace Samsung batteries across the Galaxy S, A, and Note lineups and verify proper charging behavior before returning your device.
Samsung models we service include:
- Samsung Galaxy S Series — S25, S24, S23, S22, S21, S20, S10, S9, and earlier
- Samsung Galaxy A Series — A55, A54, A53, A35, A34, A14, and more
- Samsung Galaxy Note Series — Note 20, Note 10, Note 9, Note 8
- Samsung Galaxy Z Series — Z Fold and Z Flip models
MacBook Battery Replacement
MacBooks are built to go all day on a single charge — but after a few years and hundreds of charge cycles, that runtime starts to shrink noticeably. If your MacBook is dying in a few hours, only works when plugged in, or macOS is warning you that your battery needs service, we can help. We replace MacBook batteries and test cycle count and performance after every installation to make sure you’re getting the full runtime Apple designed your machine for.
MacBook models we service include:
- MacBook Air — M1, M2, M3, M4 , M5 and Intel models (2015–present)
- MacBook Pro 13″ — M1, M2, and Intel models (2015–present)
- MacBook Pro 14″ & 16″ — M1 Pro/Max, M2 Pro/Max, M3 Pro/Max , M4 Pro/Max
- MacBook (12″) — 2015–2019 models
Signs Your Battery Needs Replacing
Not sure if your battery is the problem? Here are the most common signs it’s time for a replacement across any device:
- Device dies significantly faster than it used to
- Unexpected shutdowns even at 20–30% battery remaining
- Device only works when plugged in
- Battery percentage jumps or drops erratically
- Device runs unusually hot during normal use
- Battery appears swollen or is causing the screen to lift
- Low Battery Health warning (iPhone) or “Service Recommended” (MacBook)
Fast, Reliable Battery Replacement in Kennesaw
At MarTech, most battery replacements are completed the same day — often within an hour. We use quality replacement batteries and back every install with a warranty on parts and labor. There’s no need to buy a new device just because the battery is worn out; a battery replacement is one of the most cost-effective repairs you can make to extend the life of your iPhone, Samsung, or MacBook.
Visit us at 4221 Bells Ferry Rd, Kennesaw, GA 30144. Walk-ins welcome. Open Monday–Friday 11am–6pm and Saturday 12pm–5pm. Call (770) 226-4310 or stop by for a quick quote.