  Lithium-ion batteries are recognised as a key technology to power electric
vehicles and integrate grid-connected renewable energy resources. The economic
viability of these applications is affected by the battery degradation during
its lifetime. This study presents an extensive experimental degradation data
for lithium-ion battery cells from three different manufactures (Sony, BYD and
Samsung). The Sony and BYD cells are of LFP chemistry while the Samsung cell is
of NMC. The capacity fade and resistance increase of the battery cells are
quantified due to calendar and cycle aging. The charge level and the
temperature are considered as the main parameters to affect calendar aging
while the depth of discharge, current rate and temperature for cycle aging. It
is found that the Sony and BYD cells with LFP chemistry has calendar capacity
loss of nearly 5% and 8% after 30 months respectively. Moreover, the Samsung
NMC cell reached 80% state of health after 3000 cycles at 35C and 75% discharge
depth suggesting a better cycle life compared to the other two battery cells
with the same conditions
