Fancy Buying Alienware 99Wh Replacement Laptop Battery

High-capacity 99Wh Li-polymer laptop battery designed to replace Dell part numbers 9NJM1, MG2YH and compatible with Alienware 15 R3/R4 and 17 R4/R5 models for reliable all-day power.

If your Alienware laptop is losing runtime, this Fancy Buying replacement battery restores long-lasting performance without the premium OEM price. Built with protection circuits and high-grade cells, it delivers 11.4V at 99Wh and fits machines that use P31E, P69F and related part numbers. The pack is manufactured to meet strict safety features like overcharge and short-circuit protection and is backed by a 12-month warranty and 30-day refund policy.

How do I confirm compatibility with my Dell Alienware model?

Check the service tag or the original battery label to match one of the listed part numbers. This battery explicitly replaces 9NJM1, MG2YH, 0MG2YH, 01D82, HF250 and other variants used in Alienware 15 and 17 R3–R5 machines.

• Compare your current battery part number with the ones above.
• Works with Alienware 15 R3/R4 and Alienware 17 R4/R5 models.
• Also compatible with P31E/P69F series model identifiers.
• Contact support with your laptop model or service tag if unsure.

What performance and safety features does this battery provide?

This replacement uses Li‑polymer cells rated at 11.4V and 99Wh and includes built-in management to protect the pack and laptop. Expect protection against overcurrent, overcharge, overdischarge, excessive temperature and short circuits to maintain safe charging cycles.

• 99Wh capacity for extended runtime compared to lower-capacity packs.
• Multiple protective circuits for safe operation and longevity.
• Designed for up to roughly 500 recharge cycles under normal use.
• Manufactured using quality materials to reduce power loss and heat.

How difficult is installation and what should I prepare?

Installation is straightforward for users comfortable opening the laptop’s battery compartment or removing the bottom cover. Power down, disconnect, and follow standard anti-static and safety steps; no soldering or special tools are usually required beyond a screwdriver set.

• Power off and unplug the laptop before starting.
• Remove the bottom panel to access the battery connector and screws.
• Disconnect the old battery cable gently and swap in the new pack.
• Reinstall screws and boot to verify battery recognition and charging.

What warranty and post-sale support are included?

Fancy Buying offers a 30-day full refund window plus a 12-month warranty covering defects under normal use. Customer support is available via the seller contact button and typically replies within 24 hours to help with returns, replacements or compatibility questions.

• 30-day full refund if the product doesn’t meet expectations.
• 12-month warranty against manufacturing defects.
• Support response within 24 hours for troubleshooting and RMA help.
• Keep your order details and laptop service tag handy when contacting support.

Who is this for: This battery is intended for Alienware owners who need a high-capacity, reliable replacement for worn or failing packs in Alienware 15 R3/R4 and 17 R4/R5 systems, or for technicians servicing those models. It suits gamers and power users who require longer unplugged sessions and safe charging behavior, plus anyone seeking an affordable alternative to OEM batteries with a warranty and responsive support.