

🔋 Power up your ThinkPad like a pro—stay unplugged, stay unstoppable!
This 9-cell 57++ lithium-ion battery replacement offers 11.1V and 8.96Ah capacity, engineered specifically for Lenovo ThinkPad T440P, T540P, W540, W541, L440, and L540 models. Featuring Grade A cells and built-in circuit protection, it guarantees fast charging, long-lasting power, and OEM-level performance. Backed by a 12-month replacement warranty and 24/7 customer support, it’s the smart choice for professionals demanding reliable mobile productivity.






| ASIN | B075K7QHWH |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #58,062 in Electronics ( See Top 100 in Electronics ) #747 in Laptop Batteries |
| Customer Reviews | 3.8 3.8 out of 5 stars (318) |
| Date First Available | September 11, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.14 pounds |
| Item model number | T440P |
| Manufacturer | Dongguan K-Tech New Energy Co., Ltd. Wangniudun Branch |
| Product Dimensions | 10.63 x 4.72 x 1.18 inches |
B**L
Very easy install!
Good OEM battery for my Lenovo Thinkpad w451. It fit the slot perfectly & restored my laptops 4-5 hour runtime while unplugged. It performs just like the OEM when the unit, was new. It was super easy to install & comes up to a full charge in about an hour. It is the heavy duty optional battery which should be much more durable.
J**S
Battery for T540P
I had the choice of picking this battery for about half the cost I paid from other vendors. I decided pony up a little extra on Amanda because their reviews were much better than the rest. Unfortunately the first battery I received I fully charged and when I disconnected my power it lasted only 3 minutes at 100%. Knowing this could be a fluke I contacted amazon and had them send me a a replacement which came right away. The second battery I am completely satisfied with and has lasted between 5-6 hours each turn. I didnt rate it 5 for the inconvenience of doing it twice, but all in all a good produt and good customer service.
R**K
Good Quality High Amp Hour Capacity
Replaced the OE battery on my Lenovo T-440P Laptop, this battery is the higher Amp-Hour pack. I can run my laptop for around 4 hours on a full charge with the screen on, Low keyboard lighting and disk drive running constantly...A good quality replacement
N**N
Bad battery - doesn’t hold charge.
Does not hold charge. Seller does not respond for support. They claim 1 year warranty but don’t honor it. They say support via email but there’s no seller contact information.
D**W
Good Start, Rocky Middle, Solid Finish!
My 6 year old Lenovo W540 needed a new battery last year, so I did some research and ended up purchasing the 57++ from Amanda. It seemed like a good value. Life was good. But trouble ensued. After 8 months, the battery just up and died. Suddenly, it would not charge. I contacted the seller via Amazon and, much to my surprise, I had a response in less than 2 hours. Wow, pretty amazing! I'll spare you the boring details. I received a warranty replacement yesterday (4 days earlier than expected), immediately installed it and charged it. Then I worked on my laptop last night for over 3 hours. When it was time to quit, the machine said I still had over 4 hours remaining battery life. How'd they do that? So, great new battery and very excellent customer service. I would definitely buy from this seller again! Thank you, Amanda!
J**K
Not a good value
Fits the the computer, charges fine, but it has the staying power of a emphysemic in a marathon. At full charge, the battery lasts barely 1 hour. For comparison, the OEM battery I have since purchased lasts 4 hours.
S**N
Upgraded Battery, Excellent Value
I replaced a 6-cell with this 9-cell, and it's more than doubled the battery life (the old 6-cell had degraded significantly). As expected, it's also more bulky (less sheer) and heavier, but that's the price for more life! I think it's an excellent value for the money! Also, I use a Lenovo ThinkPad Ultra Dock, and this battery works with the dock (of course it does, but I was relieved to find out it did).
T**R
Won't Last Long
Did not last long. Bought the Amanda 9 cell as a replacement for the OEM battery for my Lenovo T540p. Went to do a BIOS update which Lenovo requires both AC power AND a working and charged battery to do the BIOS update. Surprised to discover that the Amanda battery was already completely dead at 0% charge and would not take charge even after trying to remove and reinstall it. It was just outside the one year warranty period and had the battery less than two years.
B**S
Hello, Produit reçu aujourd'hui sans soucis. Fonctionne parfaitement bien sur mon Thinkpad W541. Pas encore testé l'autonomie ni quoi que ce soit d'autre. Je mettrai à jour mon commentaire au fur et à mesure. Update : Premier test, avec le tout premier cycle sans calibrage de la batterie non concluant. S'est déchargé en 2 heures avec une utilisation normale, navigation web seulement, pas d'outils lourds. Je reviens en mise à jour avec le calibrage de la batterie. Update 2 : Affreusement déçu. Ne dépasse pas les 2h30 malgré une utilisation très légère du PC. Merci ANTIEE
M**N
This battery had made my laptop portable again. My old battery used to last 30 minutes at most, this battery lasts for up to 4 hours using the web and Lightroom.
G**S
Por el momento me ha sorprendido esta batería,ya que la batería en 5,30h de uso intensivo la batería iba por el 50% Acostumbrado a la batería original que no me llegaba a la hora.Tambien he de decir que la batería original del portátil tenía ya 12 años. Actualizaré si veo alguna anomalía en esta batería.
L**O
Si adatta perfettamente ma per dare una effettiva valutazione devo attendere qualche mese per osservare la durata della carica che per ora vs benissimo
R**N
Excelente producto, se realizaron las pruebas y me sorprendió la duración de la batería, usando Chrome y Office, llegue a obtener 5-6 horas.
Trustpilot
2 weeks ago
1 day ago