
The 40Wh M5Y1K 14.8V Replacement Battery is designed to deliver reliable power and performance for your Dell Inspiron laptops. Perfectly engineered as a direct replacement for the original battery, it ensures seamless compatibility and dependable operation.

Compatible Models:
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Dell Inspiron 15 (3000 & 5000 Series): 5559, 5558, 5555, 5758, 3567, 3551, 3552, 3558, 3565
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Dell Inspiron 14 Series: 3451, 3452, 3458, 5458
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Dell Inspiron 17 Series: 5755, 5756, 5758, 5759
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Dell P51F Series
Compatible Part Numbers:
M5Y1K, 453-BBBQ, 451-BBMG, GXVJ3, HD4J0, 991XP, VN3N0
Key Features:
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Capacity: 40Wh
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Voltage: 14.8V
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Battery Type: Li-ion, 4-cell
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High-quality cells for long-lasting durability
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Built-in protection against overcharge, overheating, and short-circuit
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100% tested to meet OEM specifications
This battery is an excellent choice for replacing your worn-out or dead Dell Inspiron battery, helping you restore your laptop’s mobility and efficiency.
FAQ
Q1: Is this M5Y1K battery compatible with Dell Inspiron 5559 and 5759?
Yes. This battery works with multiple Dell Inspiron 15 and 17 models including 5559, 5758, 5759, and more.
Q2: How long does the 40Wh M5Y1K battery last per charge?
Depending on your laptop’s configuration and usage, it can last 3–5 hours on average per full charge.
Q3: Can I replace the M5Y1K battery myself?
Yes. It is user-replaceable. Just power off your laptop, remove the old battery, and install the new one. No special tools required.
Q4: Is this an original Dell battery or replacement?
This is a high-quality replacement battery, built to OEM standards with reliable performance and safety features.
Q5: Does this battery come with warranty?
Yes. It usually comes with a 12-month warranty, ensuring you are covered against manufacturing defects.
| Battery Capacity | 40Wh/2600mAh |
| Voltage | 14.8V |
| Model No | M5Y1K |
| Warranty | 12 Months |
New lithium-ion batteries must be fully charged and fully discharged two to three times before being fully conditioned.
Please note that the full capacity and life of a new lithium-ion battery is only achieved after 2 to 3 full charge and discharge cycles.
After you have gone through 2 to 3 cycles, you never have to condition the battery again.
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