Home laptop battery IBM ThinkPad I 1421 batteries Compatible Laptop Battery for IBM ThinkPad I 1421 Click to enlarge Find other parts of your IBM ThinkPad I 1421 Code:1 Special price: $AUD Number: Brand new product with 1 year warranty! This ThinkPad I 1421 batteries replaces: This ThinkPad I 1421 batteries is compatible with the following models: