SM-S918B · Samsung Galaxy S23 Ultra
Samsung Galaxy S23 Ultra Battery Replacement Melbourne
From $189 · Same Day · Lifetime Warranty · Free Diagnostic
6.8-inch Dynamic AMOLED 2X (3088×1440) · Snapdragon 8 Gen 2 · 2023
The Galaxy S23 Ultra's 5000 mAh battery powers both the Snapdragon 8 Gen 2 and the S Pen's Bluetooth Low Energy radio, which remains active even when the pen is stowed. After two to three years of daily use — particularly for note-takers and DeX users — the battery shows measurable capacity loss. iTech Repairs replaces Galaxy S23 Ultra batteries from $189 at our Melbourne stores.
SM-S918B — Samsung Galaxy S23 Ultra
SM-S918B
2023
Snapdragon 8 Gen 2
6.8-inch
Dynamic AMOLED 2X (3088×1440)
Galaxy S23 Ultra
Signs Your Samsung Galaxy S23 Ultra Battery Needs Replacing
Continuous S Pen Idle Drain
S23 Ultra units with the S Pen stowed still show 8–12% overnight drain due to Bluetooth LE. On a degraded battery, this drain becomes significant — 20%+ overnight is not uncommon.
DeX Session Battery Drop
Using Samsung DeX (wired or wireless) with the Snapdragon 8 Gen 2 at full clock draws heavily from the 5000 mAh cell. Sessions exceeding 45 minutes can drain 30–40% on a degraded battery.
Warm Body During Charging
Excessive warmth during 45W charging — particularly above 40°C — indicates battery cells with elevated internal resistance. This is a clear sign replacement is needed.
Swelling Pushing Back Cover
In older S23 Ultra units, battery swelling is visible as the rear glass lifting slightly at the edges — a safety issue requiring immediate replacement.
Why Choose iTech Repairs for Samsung Galaxy S23 Ultra?
Same-Day Service
Most Samsung Galaxy S23 Ultra battery replacements are completed same-day at our Braybrook or Spotswood stores.
Lifetime Warranty
Every Samsung Galaxy S23 Ultra repair includes a lifetime warranty on both parts and labour — screen or battery. No time limits.
Data Safe
Battery replacement on the Samsung Galaxy S23 Ultra does not require data transfer or account access. Your photos, messages and files remain untouched.
Cheapest Price Guaranteed
We offer Melbourne's lowest prices for Samsung Galaxy S23 Ultra battery replacement. Found a cheaper written quote? We'll beat it.
Walk-ins Welcome at Braybrook & Spotswood
No appointment needed. Visit our Braybrook or Spotswood store any day, 9am–9pm, for immediate assessment and repair.
Free Diagnostic
Every Samsung Galaxy S23 Ultra repair starts with a free bench diagnostic. We identify the exact fault and provide a firm quote before any work begins — no hidden charges.
SM-S918B Battery Replacement FAQ
How much does Samsung Galaxy S23 Ultra battery replacement cost in Melbourne?
Galaxy S23 Ultra battery replacement starts from $189 at iTech Repairs. Walk in to Braybrook or Spotswood — no appointment needed.
How long does S23 Ultra battery replacement take?
Typically 1.5–2 hours. The S Pen must be safely removed before opening. We aim for same-day completion.
Can I reduce S Pen background battery drain without replacing the battery?
Disabling S Pen Bluetooth under Settings > Advanced Features reduces the overnight drain, but does not restore the capacity already lost. A replacement battery is needed to fully restore runtime.
What battery capacity does the S23 Ultra have?
The Galaxy S23 Ultra has a 5000 mAh battery. Replacement restores full original capacity and 45W fast-charging performance.
Is there a warranty on Galaxy S23 Ultra battery replacement?
Lifetime warranty on the replacement battery cell and all labour at iTech Repairs.
SM-S918B Battery Replacement in Melbourne
Free diagnostic · From $189 · Lifetime warranty · Same day service