DMKAOLLK MR90Y 65Wh Battery for Dell Inspiron/Latitude

Replacement 65Wh MR90Y battery by DMKAOLLK restores long runtime to compatible Dell Inspiron and Latitude laptops with a reliable 11.1V, 6‑cell design.

If your Dell Inspiron 15/17 or compatible Latitude notebook is losing charge too quickly, the DMKAOLLK MR90Y 65Wh battery is built to bring back usable run time while matching the original form factor. This pack uses six high‑capacity cells rated at 11.1V and includes safety circuitry for overcharge, overdischarge, over‑temperature, and short‑circuit protection. It replaces common OEM part numbers including MR90Y, XCMRD and many 300-/500‑series Dell SKUs, and comes with CE/UL/FCC/RoHS certifications plus a 12‑month replacement warranty.

How much longer will my laptop run with this MR90Y 65Wh battery?

The 65Wh capacity delivers noticeably longer use compared with lower‑capacity or worn factory batteries, especially for mixed tasks like browsing, streaming, and document work. Actual runtime varies by model, configuration, and workload, but users commonly see multiple extra hours compared to depleted packs.

• Capacity: 65Wh (higher than many 40–50Wh replacements)
• Voltage: 11.1V, compatible with MR90Y/XCMRD systems
• Cells: 6‑cell arrangement for balanced power delivery
• Expected lifespan: rated for many recharge cycles with proper care

Which Dell models and part numbers does this battery fit?

This DMKAOLLK MR90Y battery is made to replace Dell OEM MR90Y and several alternate part numbers, fitting a range of Inspiron and Latitude 3000/5000 series laptops. Check the listed part codes and your laptop’s battery label before ordering to ensure compatibility.

• Compatible lines: Inspiron 15 and 17 (5000 series), Latitude 3000 series
• Common compatible model examples: 15‑3521, 15‑3543, 15R‑5537, 17‑3721, 17‑5748, 17R‑5721
• Replaces part numbers: MR90Y, XCMRD, 312‑1390, 451‑12107 and others listed
• Tip: confirm your laptop’s existing part number before purchase

Is this replacement battery safe and dependable?

Yes — the DMKAOLLK MR90Y is manufactured to include safety protections and meets common international safety marks. Built‑in circuits guard against overcharge, overdischarge, overheating, and short circuits so the battery operates within safe limits when used as intended.

• Certifications: UL, CE, FCC, RoHS compliance
• Protection: Overcharge, overdischarge, over‑temperature, short‑circuit
• Quality: 100% new cells from manufacturer, not refurbished
• Support: 12‑month replacement warranty and 60‑day refund policy

How do I install and maintain the MR90Y battery for best life?

Installation is straightforward for user‑replaceable Dell batteries: power down, remove the old pack, and insert the new MR90Y ensuring the connector seats fully. Proper maintenance will extend battery health and maximize cycle life.

• Install when laptop is powered off and unplugged from mains
• Run a full charge and occasional full discharge cycles for calibration
• Avoid extreme temperatures and store partially charged if unused long term
• Use the original Dell charger or equivalent to ensure proper charging

Who is this for: The DMKAOLLK MR90Y 65Wh battery is aimed at Dell owners whose Inspiron 15/17 or compatible Latitude 3000/5000 laptops need restored runtime without replacing the device. It suits students, remote workers, and anyone who wants a reliable, manufacturer‑grade replacement battery that matches OEM size, voltage, and safety standards while offering a competitive warranty and certifications.