Banks are hoarding the European Central Bank’s record 489 billion-euro ($625 billion) injection into the banking system, thwarting attempts by policy makers to avert a credit crunch in the region. Almost all of the money loaned to 523 euro-area lenders last month wound up back on deposit at the Frankfurt-based central bank instead of pouring into the financial system, according to estimates by Barclays Capital based on ECB data. Banks will use most of the money from the three-year loans to meet their refinancing needs for this year and next, analysts at Morgan Stanley and Royal Bank of Scotland Group estimate.