Green Cell ULTRA Laptop Battery AS47ULTRA for Asus K56 R505 S46 S56 – 14.4V 3400mAh, 49Wh, 4-Cell Li-ion, Black

49Wh of energy from a 4-cell automotive-grade Li-ion core – the Green Cell ULTRA AS47ULTRA replacement battery turns Asus K56, R505, S46, and S56 laptops into dependable long-lived companions.

Overview

This high-capacity battery is engineered to meet or exceed the original manufacturer's specifications. The 14.4V 3400mAh pack safely powers your Asus notebook through extended productivity, media, and travel sessions. Replacing your worn battery is quick: remove the back panel, unplug the original pack, and slot in this Green Cell unit – it is a genuine drop-in replacement for the Asus K56, R505, S46 and S56 laptops. Built with certified protection circuits, it guards against overcharge, over-discharge, short-circuit, and overheating. With a robust lifecycle of more than 500 charge cycles, it consistently retains healthy capacity for years of service.

What stands out

• 49Wh total energy – delivers up to a full day of mixed-use power.
• 100% compatible with Asus K56, R505, S46, and S56 series.
• Ultra-slim footprint that drops in without modification.
• Multi-protection electronics ensure maximum safety and battery health.
• ULTRA line – premium cell technology for a longer service lifespan.
• Factory-finished in black with a durable, anti-scuff casing.

Technical details

• Battery type: Lithium-ion (Li-ion)
• Voltage: 14.4V
• Capacity: 3400 mAh (49Wh)
• Cell configuration: 4-cell
• Colour: Black
• Condition: New
• Series: ULTRA
• Compatible models: Asus K56, R505, S46, S56
• OEM part numbers: A31-K56, A32-K56, A41-K56, A42-K56
• Protection: Overcharge, over-discharge, short-circuit, overheating
• Cycle life: >500 cycles
• Warranty: 12 months
• Certifications: CE, RoHS, FCC

Our verdict

The Green Cell ULTRA AS47ULTRA is a premium replacement battery that delivers original-spec performance and safety, making it a smart choice for reviving your Asus laptop.