I think there's already a thread about this.
About 3 phase charging; The Robitronic uses this as well. If charged with high amp in first phase, mid amp in second and low in third (like 9, 6, 4 amps) people experienced lack of punch. Because the batts wasn't warm enough. So Robitronic made a new version, which introduced a 4. phase, for getting them warmed up.
But of course, you can programme it otherwise, like a high amp in the end. But then you dont get the overall benefits.
Several celluar phones charges by the same principle: higher amps first, low last. The idea is to both increase voltage and capasity.