Several cases of exploding Li-Ion batteries have been reported lately, for various laptop models. Consequentally, Dell and Apple have issued a recall of some of their laptop battery models. Some airlines have banned use of Dell and Apple laptop batteries during flights.
There is also a documented case of a ThinkPad T4x battery explosion.
No recall has been issued for ThinkPad laptops. Quoting an announcement by Lenovo from 2006-08-17:
- While no make or model of battery is 100% immune from failures or overheating, to date we have not seen any unusual pattern of problems in Lenovo or ThinkPad notebooks. Lenovo is not planning a battery recall at this time.