High quality battery 00NY493 01AV477 Battery 77+ 77++ Replacement for Lenovo ThinkPad P50 P51 P52 Series Laptop 20MM 20MN 20HH L17M6P51 L17L6P51 01AV496 01AV495 00NY490 00NY491 00NY492 4X50K14091 11.25V 90Wh 8000mAh

FAQ: 00NY493 / 01AV477 90Wh Battery Replacement for Lenovo ThinkPad P50, P51, P52

1. Is this battery compatible with my ThinkPad P50, P51, or P52?

Yes, this battery is designed specifically for the Lenovo ThinkPad P Series mobile workstations. It is compatible with:

• ThinkPad P50 (Models starting with 20MM, 20HH)

• ThinkPad P51 (Models starting with 20MN, 20HH)

• ThinkPad P52 (Models starting with 20HH)

The part numbers 00NY493 and 01AV477 are the primary identifiers for this 90Wh “77+” battery.

2. What does “77+” and “77++” mean?

This is Lenovo’s internal designation for battery capacity tiers for these models:

• 77 (Standard): Lower capacity battery (e.g., 47Wh or 70Wh).

• 77+ (Plus): This refers to the 90Wh high-capacity battery (part numbers 00NY493, 01AV477).

• 77++ (Double Plus): An even higher capacity 100Wh battery (part number 01AV496, which is also listed as compatible).

This listing is for the 77+ (90Wh) version, which offers a significant boost in battery life over the standard option.

3. Are 00NY493 and 01AV477 the same battery?

Yes, they are functionally identical 90Wh batteries. 01AV477 is likely a newer revision or replacement part number for the original 00NY493. Both are genuine Lenovo part numbers for the same high-capacity battery.

4. What about all the other part numbers listed (01AV496, 00NY490, etc.)?

The other numbers are all official Lenovo part numbers for batteries compatible with your laptop:

• 01AV496 / 01AV495: These are for the even larger 100Wh (“77++”) and 70Wh batteries, respectively.

• 00NY490, 00NY491, 00NY492: These are other capacity options (47Wh, 70Wh, 90Wh) for the P50/P51 series.

• L17M6P51, L17L6P51, 4X50K14091: These are manufacturing or FRU (Field Replacement Unit) numbers.

This battery is a direct replacement for all of them, but it specifically provides the 90Wh capacity.

5. What are the technical specifications?

• Capacity: 90 Wh (Watt-hours)

• Voltage: 11.25V

• mAh Rating: ~8000mAh (calculated as 90Wh / 11.25V * 1000)

6. Is this a genuine Lenovo battery?

The part numbers listed are genuine Lenovo OEM numbers. However, the term “Genuine” in the product title often indicates a high-quality compatible battery built to meet OEM specifications. To ensure you receive a new, authentic Lenovo battery, purchase from an authorized Lenovo distributor or a highly reputable seller.

7. How do I install it?

Replacing the battery in a ThinkPad P50/P51/P52 is one of the easiest repairs:

1. Shut down the computer.

2. Disconnect the AC power adapter.

3. Slide the battery release latches on the bottom of the laptop to the unlock position.

4. Lift the old battery out.

5. Insert the new battery and press down until it clicks into place.

No tools are required.

8. Why is my battery life shorter than expected with the new 90Wh battery?

Battery life depends heavily on usage. The P50/P51/P52 are powerful workstations. Running demanding applications (CAD, video editing, virtualization) will consume power much faster than light web browsing. The 90Wh battery provides the maximum runtime possible for standard configurations without using the larger, protruding 100Wh battery.

Disclaimer: For optimal performance and safety, use the original Lenovo AC adapter. Always purchase from reputable sellers to avoid counterfeit products. Recycle your old battery responsibly.