The manufacturer of the OEM/ODM 18650 lithium ion LifePo4 batteries in China would be the same as the manufacturer of this OEM battery. This provider is one among the biggest manufacturers of liion batteries. It creates the PMP, PMMA, and ODM ion batteries. Certainly one of its popular services and products would be that the VOIP notebook battery. It advertises the power of its lithium ion cells along with its high compatibility together with many other devices.