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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Ultrasonics. 2015 Jul 29;64:1–9. doi: 10.1016/j.ultras.2015.07.012

Table 3.

Important parameters for the four separate days of charging.

I cell avg (A) Pin avg (W) Eff avg (%) charging time
Day 1 0.076 2.0 15% 2hrs 40 min
Day 6 0.078 1.3 24% 2 hrs 30 min
Day 11 0.075 1.4 21% 2 hrs 40 min
Day 15 0.073 1.4 21% 2 hrs 40 min
20% 10.5 hrs