Lenovo – 39 (6 Cell Slice) Battery For Thinkpad X1 (42t4938) Retail – Mac Part Store
GCP Products 23091120-64898367 For Lenovo Battery 45N1025 45N1024 11.1V 49Wh For Thinkpad X220 X230 Laptop 44+
ThinkPad X220 review | TechRepublic
Just bought a quirky x220 slice battery. Looks exactly like a 19+, but says 20+. Works completely fine with 1% wear. Does anyone know what it might be? : r/thinkpad
ThinkPad slice battery for X220 / X230 - YouTube
Lenovo X220 X220i ThinkPad Battery 29+ 6 Cell
Lenovo ThinkPad X220 really does get 20+ hours of battery life (sort of) - Liliputing
The Definitive T430 Modding Guide | by Gee (https://n4ru.it) | Medium
Bargain purchase, original 19+ slice battery for my ThinkPad X230, £7.50 on Ebay auction! : r/thinkpad
Re-Celling an Extended Slice Battery - Thinkpads Forum
Just bought a quirky x220 slice battery. Looks exactly like a 19+, but says 20+. Works completely fine with 1% wear. Does anyone know what it might be? : r/thinkpad
Lenovo ThinkPad X220 Hands On, Details, Specs And Video