📌 What It Is
The JCID Tag-On Battery Repair Flex Cable is a special external flex cable used in mobile repair for iPhone 14 and iPhone 14 Plus. It’s designed to work with JCID programming tools (like the V1S, V1SE, V1S Pro, or similar) to help with battery data programming and to fix battery-related software issues after a battery replacement.
It’s not a replacement battery, but a repair accessory that helps make the phone recognize a new battery correctly.
🔧 Main Purpose
After replacing the battery on newer iPhones (iPhone XS and later), the phone often shows warnings such as:
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“Battery Cannot Be Verified”
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“Maximum Capacity Not Available”
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Incorrect battery health / cycle count
The JCID Tag-On flex cable allows technicians to modify or program the battery data (like capacity, cycle count, and health info) so the phone recognizes the replacement battery properly.
📋 Key Features
⭐ Tag-On External Flex Design
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Attaches to the battery connector externally during repair.
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Works with JCID programmers (e.g., V1SE, V1S Pro).
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No need to solder or permanently modify the battery board.
⚡ Helps Fix Battery Software Errors
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Enables correct battery identification.
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Helps remove battery warning messages after installation.
🔌 Simple Usage
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The technician connects the Tag-On Flex between the battery and programmer to read/write battery information.
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After programming, the battery info updates, and the phone can show correct health data.
💡 Low Power & Safe
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Designed with low power consumption and minimal interference during repair.
🛠 Typical Repair Workflow
A general professional repair process (simplified):
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Open the phone and remove the old battery or disconnect its flex cable.
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Install a new battery (or its BMS board).
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Attach the JCID Tag-On Repair Flex Cable to the battery connector.
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Connect the JCID programmer (like V1SE or V1S Pro).
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Use software to read and update battery data (health, cycles, etc.).
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After programming, the phone should recognize the battery correctly.
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Remove the Tag-On if not needed permanently (optional) or keep it attached based on repair practice.
⚠ Important Notes
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This tool doesn’t restore actual hardware battery capacity — it helps update the data that iOS reads.
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It requires a compatible JCID programming tool to function.
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Some services online may misuse terms like “battery boost,” but the tool does not physically improve battery performance — it updates or edits software data only.
📦 What’s Included
Typically, the product includes:
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1 × JCID Tag-On Battery Repair Flex Cable for iPhone 14 / 14 Plus compatibility.




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