ZTHY 86Wh Laptop Battery for Dell G15 G7 XPS 15

ZTHY 86Wh laptop battery is a direct-fit Li-ion replacement designed to restore full runtime to many Dell G7, G15, XPS 15, Precision, Alienware and Vostro models.

If your Dell laptop no longer holds a charge like it used to, this 86Wh (11.4V / 7544mAh) ZTHY replacement battery gives you a manufacturer-new pack compatible with numerous Dell part numbers (69KF2, 70N2F, M59JH, 8FCTC, 08FCTC, 070N2F). It's a 6-cell Li-ion unit built to the same physical dimensions and connector layout as the original so it fits into the same chassis and reports correctly to your system after proper installation and initial cycling.

Will this battery work with my specific Dell model?

Yes — the ZTHY 86Wh battery is compatible with a wide list of Dell laptops across consumer, gaming, and mobile workstation ranges. It fits XPS 15 (9500/9510/9520), Precision 5550/5560/5570, Alienware M15/M16/M17 (R3–R6), G7 15 7500, G15 5510/5511/5515/5520/5521/5525/5530, and Vostro 15/7620/7510 families as listed.

• Matches OEM part numbers: 69KF2, 70N2F, M59JH and others
• Designed for XPS, Precision, Alienware, G-series, Vostro and Inspiron variants
• Physical and electrical fit for affected Dell chassis

How do I install and get the new battery recognized by Windows or BIOS?

Installation is straightforward: power down, remove the service panel, unplug the old pack, and connect the new battery to the same socket. If the system does not immediately show full capacity, a few simple steps typically resolve recognition or calibration issues.

• Ensure the connector is fully seated and the interface is clean
• If not recognized, reinstall and reboot the laptop one time
• Discharge to 10–20% then charge and repeat 3–4 cycles to wake the battery

What performance and lifespan can I expect from this replacement pack?

The ZTHY replacement is a new Li-ion assembly rated at 86Wh and designed to endure hundreds of recharge cycles. While runtime depends on your workload and settings, this capacity typically returns mobile workstations and gaming laptops to near-original battery life when compared with a worn pack.

• Rated capacity: 86Wh (7544mAh) at 11.4V
• 6-cell Li-ion chemistry for stable output under load
• Engineered for up to about 500 recharge cycles over its usable life

Are there any safety or compatibility precautions I should know?

ZTHY batteries are new-from-manufacturer units but require correct handling and installation to function safely. Follow basic precautions to avoid improper seating, and confirm your system’s BIOS is updated if you encounter recognition issues.

• Install only when laptop is powered off and disconnected from mains
• Do not puncture or short-circuit the battery pack
• Contact support if capacity or charging behavior is abnormal after cycling

Who is this for: This replacement battery suits Dell owners who need a cost-effective, direct-fit power pack to restore mobile runtime for gaming laptops, professional workstations, or productivity machines. It’s appropriate for technicians replacing worn OEM packs, home users seeking longer unplugged sessions, and anyone who wants a one-to-one compatible battery for the listed Dell models and part numbers.