AMPLUS 1070mAh replacement sub battery for the Samsung Galaxy Z Flip4 5G F721B. This part is identified by battery number EB-BF724ABY and supplier SKU AMPBRSub-F721. It is supplied as one replacement battery for professional repair.
Compatibility
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Phone: Samsung Galaxy Z Flip4 5G
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Verified model: SM-F721B / F721B
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Battery number: EB-BF724ABY
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Capacity: 1070mAh
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Brand and grade: AMPLUS aftermarket replacement
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Position: Sub battery
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SKU: AMPBRSub-F721
Galaxy Z Flip4 phones use two separate internal battery cells. Confirm the battery number printed on the original component before ordering. Do not rely only on the phone name, battery position or appearance because the two cells have different capacities, shapes and connectors. This listing is specifically matched to EB-BF724ABY and the supplier's F721B sub-battery record.
Product condition and supplier testing
This is a brand-new AMPLUS aftermarket battery, not a genuine Samsung Service Pack battery and not a pulled component. The supplier describes its AMPLUS battery as a full-capacity, zero-cycle lithium-polymer replacement and states that each unit is tested before shipping. The supplier also lists overcharge, overheating, overload, short-circuit, temperature-control and PTC protection, plus RoHS and CE certification. These are supplier specifications; actual runtime depends on the phone, software, network conditions, charging habits and installation quality.
When battery replacement may help
A correctly diagnosed battery replacement may help when a compatible Z Flip4 has reduced runtime, unexpected shutdowns, inconsistent battery percentage or a confirmed battery fault. Similar symptoms can also result from the other battery cell, charging hardware, damaged interconnect cables, software, liquid damage or a main-board fault. Replacing this battery is not guaranteed to correct every charging, heat, boot-loop or power problem. Professional diagnosis is recommended before ordering.
What is included
The package contains one AMPLUS EB-BF724ABY 1070mAh replacement battery. Adhesive, tools, the second Z Flip4 battery, installation labour and other parts are not included. Compare the connector, shape and printed battery number with the original part before removing protective packaging or beginning installation.
Installation and lithium-battery safety
Galaxy Z Flip4 battery replacement is an advanced repair involving adhesive-backed covers, delicate flex cables and a folding chassis. Power the phone off and disconnect the batteries before working around internal connectors. Never bend, puncture, crush, short-circuit or expose a lithium battery to excessive heat. Stop using or handling any battery that is swollen, leaking, damaged or unusually hot.
Test battery detection, charging and normal operation before resealing the device. Opening a sealed phone can reduce its original water resistance. New adhesive does not guarantee restoration of the factory ingress-protection rating. Professional installation is strongly recommended. Installation damage, torn flex cables, bent connectors, puncture damage and damage caused by an incompatible device are not product defects.
Availability and fulfilment
One unit is currently recorded in JPC Mobile stock, and the exact supplier item is also currently available in limited quantities. If local stock is exhausted, the product may be sourced from our Australian supplier after an order is placed. Supplier availability can change without notice, and we will contact you if an unexpected supply issue affects fulfilment.
Warranty and Australian Consumer Law
This AMPLUS battery includes a 12-month product warranty for verified functional defects under normal use. Assessment may require the battery and device details to be returned. The warranty does not cover incorrect diagnosis, change of mind after installation, normal capacity variation, physical or liquid damage, puncture, overheating caused by external damage, modified parts, incorrect installation or use in an incompatible device.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. Nothing in this warranty limits or excludes any rights or remedies available under the Australian Consumer Law.
Frequently asked questions
Is this the 2630mAh Z Flip4 battery?
No. Exact SKU AMPBRSub-F721 is the 1070mAh EB-BF724ABY battery. Match the original printed battery number before ordering.
Is this a genuine Samsung Service Pack battery?
No. It is an AMPLUS branded aftermarket replacement.
Does the listing include both Z Flip4 batteries?
No. It includes one EB-BF724ABY 1070mAh battery only.
Will it fit every regional Z Flip4?
The supplier specifically verifies F721B. Compatibility with another regional model should be confirmed from the original EB-BF724ABY marking before purchase.
Can I install it myself?
Professional installation is recommended because foldable-phone disassembly and lithium-battery handling carry a high risk of damage.
