Lenovo M4400 B40 B50 Laptop Battery 14.4V 2200mAh 4-Cell – Astrum

SKU: ABT-LNM4400 | Warranty: 12 months | Condition: Brand New

🌟 Key Benefits
Extended runtime: 2200 mAh capacity at 14.4 V for hours of unplugged productivity
Exact OEM fit: Matches Lenovo part 45N1185 form-factor and connector layout
Certified safety: Built-in overcharge, over-discharge, and short-circuit protection
Durable cycle life: Retains reliable capacity over hundreds of recharge cycles
Tool-free swap: Slide-in installation—no tools required
Peace of mind: Backed by a 12-month manufacturer warranty

📋 Technical Specifications
Specification Details
Battery Type Lithium-Ion (Li-Ion)
Voltage 14.4 V
Capacity 2200 mAh
Cell Count 4-Cell
SKU ABT-LNM4400
Warranty 12 months
Protections Overcharge, Over-discharge, Short-circuit
Certifications CE, RoHS

🔑 Compatible Lenovo Part Numbers
121500239 · 121500240 · 121500241 · 121500242 · 121500243 · 121500244 · 45N1182 · 45N1183 · 45N1185 · 45N1186 · 45N1187 · L12L4E55 · L12M4E55 · L12S4E55 · L13L4A01 · L13M4A01 · L13S4A01 · 5B10K10151 · 5B10K10153 · 5B10K10154 · 4ICR18/65 · 4ICR18/66 · ABT-LNM4400

💻 Compatible Models
Lenovo IdeaPad B40-30 · B40-45 · B40-70 · B50-30 · B50-30 Touch · B50-45 · B50-70 · N40-30 · N40-45 · N40-70 · N50-30 · N50-45 · N50-70 · M4400 · M4400A · M4450 · M4450A · V4400 · V4400A Notebook PC

🛠 Installation & Care Tips
Power off your laptop and unplug the AC adapter.
Slide the latch to eject the existing battery pack.
Align contacts of the Astrum ABT-LNM4400 and slide in until it clicks.
Fully charge before first use to calibrate the internal gauge.
Perform a full discharge/charge cycle monthly to maintain capacity accuracy.
Store at roughly 40 % charge in a cool, dry place if unused for extended periods.

📦 What’s Included
1 × Astrum ABT-LNM4400 14.4 V / 2200 mAh (4-Cell) Battery
1 × Quick-Start Guide with Safety & Installation Instructions