The specific energy density of battery cells, depending on chemistry:

• Lead Acid (PbSO₄ ) = 40Wh/kg
• NiCd (Nickel Cadmium / NiOOH) = 60 Wh/kg
• NiMh (Nickel Metal Hydride / NiOOH) = 90Wh/kg
• LTO (Lithium Titanium Oxide / Li4Ti5O12) = 80Wh/kg.
• LPF (Lithium Iron Phosphate / LiFePO₄) = 115 Wh/kg.
• LMO (Lithium Ion Manganese Oxide / LiMn₂O₄) = 140Wh/kg.
• NMC (Lithium Nickel Manganese Cobalt Oxide / LiNiMnCoO₂) = 180Wh/kg. 
• LCO (Lithium Cobalt Oxide / LiCoO₂) = 180Wh/kg. 
• NCA (Lithium Nickel Cobalt Aluminum Oxide / LiNiCoAlO₂) = 255Wh/kg.