Regarding the lithium distribution in the anode, this can be directly visualised through the evolution (formation, growth and disappearance) of the various LixC phases; three regions exhibiting different properties were identified and defined previously as HL, DL and IN respectively. It is expected that both the DL region and the IN region will have a negative impact on the cell performance. The DL region is present primarily at voltages in the range between 2.65 V and 3.95 V (no presence of this region was observed at 4.2 V) and its presence was seen to affect the distribution of lithium in the closely located cathode material; at the discharge state it was shown that lithium stays in this region in the form of LiC30-30+, preventing the complete lithiation of cathode material. However, at higher voltages (above 3.95 V) this region does not seem to contribute to the formation of lithium heterogeneities. Regarding the IN region, it was found to be present from the beginning of the cell operation and was located in proximity to the Al tab -separator in the middle of the cell region. Throughout the seven cycles performed in this work, no changes were observed related to the distribution of this region. The lithium incorporated in the anode as a LiC30-30+ phase was most likely formed during the initial cycle performed by the manufacturer and is a result of the cell design; the influence of the Al current collector (i.e. lack of cathode tape), stainless steel casing and separator at the core of the jelly roll (Fe-Al-Sep) region was shown previously to affect the lithium distribution in a commercial AAA Li-ion battery . Our investigation shows that significant heterogeneities in the lithium distribution can be expected to form primarily in the anode during charging and discharging. These heterogeneities can contribute both to the capacity loss at the anode side as well as affect the distribution of lithium in the cathode.