What is a lithium-ion battery? Solar Forums › Forums › Energy Storage & Batteries › What is a lithium-ion battery? This topic has 0 replies, 1 voice, and was last updated 5 months ago by Jace. Viewing 1 post (of 1 total) Author Posts August 15, 2025 at 5:16 pm #2918 JaceParticipant A rechargeable battery using lithium ions to store and release energy. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In