Astrum ABT-HP6720 Battery for HP 550 / 610 / 6730 / 6735 – 10.8 V 4400 mAh (6-Cell Li-Ion)

Upgrade your HP notebook with the Astrum ABT-HP6720 replacement battery, engineered to deliver extended unplugged runtime, an exact OEM fit, and advanced safety protections—all backed by a 12-month warranty.

Key Benefits
Extended runtime: 4400 mAh capacity at 10.8 V for hours of productivity off the grid
OEM-perfect fit: Designed specifically for HP 550, Compaq 6720S/CT, 6730S/CT, 6735S, 6830S, and HP 610 series
Certified safety: CE and RoHS compliant with built-in overcharge, over-discharge, and short-circuit protection
Durable cycle life: Maintains consistent performance across 500+ recharge cycles
Tool-free installation: Quick plug-and-play swap—no special tools required
Peace of mind: Backed by a 12-month manufacturer’s warranty

Technical Specifications
Feature Details
Battery Type Lithium-Ion
Voltage 10.8 V
Capacity 4400 mAh
Cells 6-Cell
SKU ABT-HP6720
Warranty 12 months
Certifications CE, RoHS
Protections Overcharge, Over-discharge, Short-circuit
Specifications sourced from Astrum official listing

Compatible HP Models
HP 550
HP 610
Compaq 6720S / 6720S CT
Compaq 6730S / 6730S CT
Compaq 6735S
Compaq 6830S
Verified compatibility across major HP/Compaq business notebooks

Compatible Part Numbers:

451085-121 · 451085-141 · 451085-142 · 451085-361 · 451085-621 · 451085-661 · 451086-001 · 451086-121 · 451086-141 · 451086-142 · 451086-161 · 451086-322 · 451086-361 · 451086-362 · 451086-421 · 451086-621 · 451086-661 · 451568-001 · 456864-001 · 456865-001 · 464119-142 · 464119-143 · 464119-162 · 464119-361 · 464119-362 · 464119-363 · 484787-001 · 490306-001 · 491278-001 · 491279-001 · 491654-001 · 491657-001 · 496897-001 · 500764-001 · 500765-001 · 501870-001 · 550 · 572186-001 · 572187-001 · 572188-001 · 572189-001 · 572190-001 · 572191-001 · DD06 · DD08 · DD08063 · GJ655AA · GJ655AA#ABH · HSTNN-FB51 · HSTNN-FB52 · HSTNN-I39C · HSTNN-I40C · HSTNN-I48C-A · ABT-HP6535 · HSTNN-I48C-B · HSTNN-I49C · HSTNN-I50C-B · HSTNN-I54C · HSTNN-I64C-5 · HSTNN-I65C-5 · HSTNN-IB51 · HSTNN-IB52 · HSTNN-IB55 · HSTNN-IB62 · HSTNN-LB51 · HSTNN-LB52 · HSTNN-OB51 · HSTNN-OB51T · HSTNN-OB52 · HSTNN-OB62 · HSTNN-XB51 · HSTNN-XB52 · HSTNN-XB62 · KU532AA · NBP8A97

Installation & Care Tips
Power off and unplug your notebook before replacing the battery.
Unlock and slide out the existing battery using the release latch.
Align contacts, insert the Astrum ABT-HP6720, and press until it clicks securely.
Fully charge before first use to calibrate the internal fuel gauge.
Perform a full discharge/charge cycle monthly to maintain capacity accuracy.
Store at 20 %–40 % charge in a cool, dry place if unused for extended periods.

Package Includes
1 × Astrum ABT-HP6720 10.8 V 4400 mAh (6-Cell) Battery
1 × Installation & Safety Guide