Brother BA-E001 Rechargeable Lithium Ion (Li-ion) Battery for P-touch Label Makers Genuine Brother Rechargeable Li-ion Battery (BA-E001) Excellent quality Voltage: 7.2V / Watt-hour: 14Wh Current capacity of 1850mAh Designed for use with select Brother P-touch Label Makers: PT-H300, PT-H300LI, PT-H500LI, PT-750W, PT-P750WVP, PT-E300, PT-E500, PTE550W