1) Product Description 🔋
Cellmaxs Diagnostic Battery supports Repair Assistant after correct installation and calibration on verified models.
2) Suitable For Repair Use ⚠️
Suitable for replacing an old battery with these symptoms:
• Battery drains fast ✅
• Battery percentage drops quickly ✅
• Phone shuts down because of a weak battery ✅
• Short battery life ✅
• Battery swelling ✅
• Old battery cannot hold charge ✅
This battery may NOT solve problems caused by:
• Damaged motherboard ❌
• Charging port / charging IC problem ❌
• Water damage ❌
• Software/system issue ❌
• Wrong model or connector ❌
If your phone cannot power on at all, please check the motherboard and charging port first before replace.
3) Compatible Models🔎
• iPhone 15 Plus ✅
• 4920mAh 🔋
4) What’s Included📦
• Replacement Battery x1
• Battery Adhesive x1
• Waterproof Adhesive x1
• Installation Tool Kit x1
5) Warranty Policy🛡️
Warranty: 1 months from the date of package receipt
✅ Warranty valid:
• Factory defect
• Battery cannot work during pre-installation testing
• Battery swelling or leakage on arrival
• Shipping damage / missing items
• Wrong item received
❌ Warranty void:
• Battery already installed and damaged during installation
• Battery bent, punctured, pressed, cut, or deformed
• Flex cable or connector damaged
• Damage caused by wrong installation
• Damage caused by water-damaged phone
• Damage caused by motherboard / charging port / charging IC issue
• Damage caused by improper charger, overheating, or short circuit
• Wrong model ordered by buyer
For warranty checking, please provide clear photos and videos before installation.
6) Installation Reminder 💡
① Power off the phone before installation.
② Compare the old battery model, size, connector, and flex cable position before installation.
③ Do not bend, puncture, press, heat, or damage the battery.
④ Please test the battery before sealing the back cover.
⑤ Professional installation is strongly recommended. Damage caused by improper installation is not covered by warranty.
⑥ After installation, the first battery percentage may be inaccurate. Please complete 2–3 full charge cycles for better battery performance.
Battery calibration suggestion:
Use the phone until it powers off automatically → Charge to 100% without interruption → Repeat 2–3 cycles.
For best results, please use a good quality original charger and cable.
7) Shipping & Packaging🚚
• COD Cash on Delivery: Supported ✅
• Local Standard: Ships within 24 hours for selected ready-stock models
• International Standard: Estimated delivery time depends on checkout page
• All items are checked and packed carefully before shipping.
• Final delivery time is subject to the estimated shipping time shown at checkout.
