Original Battery For T400 2764 2765 6473 7417 FRU 42T4771 42T5262 42T5264 42T4678 42T4745 9Cell 85Wh - AliExpress
42T4530 IBM Lenovo 9-Cell High Capacity Battery 33 for ThinkPad T400 R400 T60/61 R60/
Premium Power Products Compatible 9 cell 7800 mAh battery for Lenovo Thinkpad R61 T61 For Notebook Battery Rechargeable 7800 mAh 10.8 V DC 1 - Office Depot