User manual Lenovo ThinkPad T400 (English - 188 pages)
Repairing / Unlocking Lenovo T400, T60, T61 batteries 42T5262 – Laptop Battery Chip Reset, Reprogram and Repair – Laptop Battery Analyzer and Repair Forum
My-lenovo-vantage-can-t-find-my-computer-driver-for-calibrating-them - English Community - LENOVO COMMUNITY
KingSener X240 laptop Battery for Lenovo US Warehouse - BatteryMall.com
The dirty little secret about the ThinkPad T430's CMOS battery : Global Nerdy
Unlocking Thinkpad Batteries | Hackaday
ThinkPad X230 bad battery. Do you suggest battery gauge reset? Which app do you use for system/battery monitoring and settings? is Lenovo Vantage good? : r/thinkpad
Solved] Lenovo Plugged In Not Charging - Driver Easy