Replacement Battery for Sony Clie PEG-TJ27, PEG-TJ37 [Misc.] Sony Clie Battery Type: Li-Polymer Volts/AmpH: 3.7V 750mAh Replacement PDA Battery Designed for Sony Clie PEG-TJ27, PEG-TJ37 Part No. UP553048-A6H Brand new, 1 year warranty!