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Model & Voltage: Replacement battery matching Lenovo part L18C4P71 (also L18L4P71, L18M4P72, SB10K9764x) with a rated output of 15.36 V
Capacity: 3,325 mAh / 51 Wh, made of 4-cell Li‑Ion Lithium-Polymer Grade-A cells .
Compatibility: Designed for Lenovo ThinkPad X1 Carbon (7th/8th Gen) and X1 Yoga (4th/5th Gen) series — compatible part numbers include L18M4P72, L18L4P71, 02DL005, 02DL006
Smart Safety Circuit: Built-in BMS protects against overcharge, over-discharge, overheating, and short-circuits; backed by CE/FCC/RoHS certification
Form Factor: OEM black internal battery; plug-in design for easy installation in laptop chassis; often includes installation tools
| Battery Type | Li-ion rechargeable battery |
| Battery Voltage | 15.36v |
| Battery Capacity | 3325mah |
| Model | L18C4P71 |
| Country of Origin | CHN |