I recently purchased this battery but when i boot up i get an error saying it is not supported. i have a lenovo thinkpad w540

We experienced the similar issue on a Lenovo Thinkpad. Apparently, Lenovo is embedding a chip in the laptops that confirms that their batteries are compatible with the newest standard. Anyhow, we just ignored the message and the battery has been working fine.

My current battery # for lenovo thinkpad w541 is 45n1779. i see this battery lists as comparable. can you confirm?

I cannot as mine is 540P. I would try searching on the 45n1779 or the part number.

How long is the warranty? I purchased this battery on 9-Sep-2019 and it failed today (29-May-2020) after 8 months.

Dear friend, I'm sorry, and we have a 12-month warranty, please feel free to contact me, I will replace a new battery for you immediately, sorry again. Looking forward to hearing from you.

Is this RoHS compliant, or otherwise lead and mercury-free?

I have no idea. All I know is that it works.

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9 Cell 100WH 57++New Battery Replacement for Lenovo ThinkPad T440P | for T540P W540 W541 L440 L540 45N1152 45N1153 0C52863 0C52864-11.1V 8960mAh

9 Cell 100WH 57++New Battery Replacement for Lenovo ThinkPad T440P | for T540P W540 W541 L440 L540 45N1152 45N1153 0C52863 0C52864-11.1V 8960mAh

Product ID: 49769954

Details

Battery Capacity
8960
Battery Cell Composition
Lithium Ion
Brand
A AMANDA
Number of Batteries
1 Lithium Ion
Recommended Uses For Product
Laptop

⚡Fast charge Grade A cells

🔋100Wh high capacity

🛡️Built-in circuit protection

11288 kr

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power up your ThinkPad, power up your day!

SAFETY FIRST ALWAYS - Integrated circuit protection guarantees stable, safe performance under all conditions.
SEAMLESS COMPATIBILITY - Perfectly fits Lenovo ThinkPad T440P, T540P, W540, W541, L440, L540 models for hassle-free replacement.
CONFIDENCE IN EVERY CELL - Backed by 12-month replacement and 24/7 email support to keep your workflow uninterrupted.
POWER THROUGH YOUR WORKDAY - 100Wh capacity delivers extended runtime for marathon productivity sessions.
CHARGE FASTER WORK SMARTER - Grade A cells ensure rapid charging and efficient power use to keep you moving.

This 9-cell 100Wh 57++ replacement battery for Lenovo ThinkPad models T440P, T540P, W540, W541, L440, and L540 offers a robust 8960mAh capacity at 11.1V. Featuring Grade A lithium-ion cells for fast charging and low power consumption, it includes built-in circuit protection for safety and stability. Supported by a 12-month replacement warranty and round-the-clock customer service, it’s the reliable upgrade your professional setup demands.

Specifications

ASIN	B075K7QHWH
Antenna Location	Laptop
Battery Capacity	8960 milliamp_hours
Battery Cell Type	Lithium Ion
Battery Weight	300 g
Best Sellers Rank	#15,913 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #804 in Laptop Batteries
Brand	A AMANDA
Customer Reviews	4.0 4.0 out of 5 stars (322)
Item Dimensions	10.63 x 4.72 x 1.18 inches
Item Weight	0.52 kg
Manufacturer	Dongguan K-Tech New Energy Co., Ltd. Wangniudun Branch
Model Name	T440P
Model Number	T440P
Number of Batteries	1 Lithium Ion batteries required. (included)
Reusability	Rechargeable
UPC	726679919060
Unit Count	1 Count
Voltage	11.1 volts

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