Lithium Batteries

The term lithium ion batteries refers to a rechargeable battery where the negative electrode (anode) and positive electrode (cathode) materials serve as a host for the lithium ion (Li+).

lithium ion batteries

Buy Lithium Ion Batteries for your Solar PV System

Since lithium ions are intercalated into host materials during charge or discharge, there is no free lithium metal within a lithium-ion cell.  In a lithium ion cell, alternating layers of anode and cathode are separated by a porous film (separator). An electrolyte composed of an organic solvent and dissolved lithium salt provides the media for lithium ion transport.  For most commercial lithium ion cells, the voltage range is approximately 3.0 V (discharged, or 0 % state-of-charge, SOC) to 4.2 V (fully charged, or 100% SOC).

Lithium-ion batteries (Li-ion) have several advantages over conventional lead-acid batteries:

  • More energy with less weight; High energy density:
  • A high charge currents (shortens the charge period)
  • High discharge currents (enabling for example electrical cooking on a small battery bank)
  • Long battery life (up to six times the battery life of a conventional battery)
  • High efficiency between charging and discharging (very little energy loss due to heat development)
  • Higher continuous power available