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Li-Ion Single Cell

Knowledge: There are three types of Li-Ion cells on current market based on chemistry of cathode materials. Please see the table below to see advantage and disadvantage of each type cell.  Among of them, LiCoO2 series Li-Ion cell has the highest energy density and is most popular cell using in the market.  LiFePO4 and LiMnNiO4 cell still are in developing

　

Chemistry Voltage  Energy Density  Working Temp.  Cycle Life  Safety Environmental Cost based on cycle life x wh of SLA
LiFePO4 3.2V >120 wh/kg  -0-60 °C  >2000 Safe Good

0.15-0.25

 lower than SLA

Lead acid 2.0V > 35wh/kg  -20 - 40°C >200 Safe Not good 1
NiCd 1.2V > 40wh/kg  -20 - 50 °C >1000 Safe Bad 0.7
NiMH 1.2V  >80 wh/kg  -20 - 50 °C  >500 Safe Good 1.2-1.4
LiMnxNiyCozO2 3.7V >160 wh/kg  -20 - 40 °C  >500 Unsafe without PCB or PCM, better than LiCo OK 1.5-2.0
LiCoO2 3.7V >200 wh/kg  -20 - 60 °C  > 500 UnSafe without PCB or PCM OK 1.5-2.0

Warning

  • Li-Ion battery is dangerous.  Must read safety instructions  before buying / using Li-ion / Polymer battery and packs

  • Never use Li-Ion battery pack without PCB (protection circuit board). For Li-Ion battery pack with cell more than 4 cells, shall use PCM with balance function to get longer service life.

  • Must use smart charger to recharge a Li-Ion battery pack

Li-Ion Cylindrical Cell Series
Li-Ion Cylindrical Cell Series
18650(4/3AF), 18500, 14500(AA) 10440(AAA), 26650 (Long C )
Polymer Li-Ion Cells
Polymer Li-Ion Cells
Li-Ion 9V Block Cells
Li-Ion 9V Block Cells
Li-Ion Button Cells
Li-Ion Button Cells

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