Li/Li + ), however the measured anode potential also increases as Li + ions diffuse to equilibrate potential across the electrode, while the falling charge current reduces polarisation across the electrode. The inclusion of a CV step can dramatically alter observed capacity during a rate capability test. Figure shows capacity data for an LMFP\\Gr pouch cell during such a test in which varying termination conditions were employed for the CV step (namely (i) no CV step, (ii) 1/10 th of initial current, and (iii) 1/30 th of initial current). The effect of the CV step on low Crate (C/3) performance was quite significant, increasing capacity from 127 mAh g -1 (no CV step) to 136 mAh g -1 (1/10 th current) and 142 mAh g -1 (1/30 th current). However, the effect at higher C-rates was far more striking e.g. the capacity increases from 53.7 to 85.1 and 103.6 mAh g -1 at 5 C. The added effect at higher rates can be more clearly viewed when the capacity as % of initial is considered (Figure ). Here the capacity retention at 5 C was 35 %, 62 % and 73 % for the 3 protocols. An apparent dramatic "improvement" of high-rate performance was achieved with the same electrode, through simple modification of the test protocols. The difference between CV step durations of 1/10 th and 1/30 th was reduced at 10