Lenovo ThinkPad 4 Cell 33 Battery for T400, R400, T60/61 14W and R60/R – Technology Traders
DC12 MITY-T400 GO-BOX for LiFePO4 Battery, Charger & 150 W Solar Controller - Impulse Electronics
Amazon.com: Synergy Digital Camera Battery, Works with Fujifilm FinePix T400 Digital Camera, (Li-Ion, 3.7V, 800 mAh) Ultra Hi-Capacity, Compatible with Fuji NP-45 Battery : Electronics