A lithium-ion battery has a nominal voltage of 3. Here's a useful battery pack calculator for calculating the parameters of battery packs, including lithium-ion batteries. Essential tool for electric vehicle conversion, solar energy storage, DIY power banks, e-bike batteries, and custom battery pack design. Considering parallel connection lithium cell typically has a nominal. The minimum voltages listed are a rough estimate of the absolute minimum voltage you should ever discharge your cells to. This also shows two distinct sets of data and that is fundamentally down to the two dominant chemistries currently being used.