Nikkei slips 1 pct, no support from rise in output

* Nikkei falls 1 pct despite strong output data

* Nikkei falls towards 25-day average, ends above it

* Trading houses extend losses as oil falls further

* Battery maker GS Yuasa slides after downgrade

By Elaine Lies

TOKYO, June 29 (Reuters) - Japan's Nikkei average fell 1 percent on Monday, erasing earlier gains, as trading firms such as Mitsubishi Corp (8058.T) slid on lower oil prices and Daiwa Securities (8601.T) tumbled on a share sale announcement. GS Yuasa Corp (6674.T) slid 10.6 percent after Goldman Sachs initiated coverage of the car battery maker with a "sell" rating and 700 yen target price, saying it expects strong growth expectations to subside, while similar environmentally friendly shares also lost ground. The Nikkei's retreat came despite Japanese industrial output jumping 5.9 percent in May, matching April's biggest gain in half a century. It fell short of a 7.0 percent rise forecast by analysts polled by Reuters, however, and the outlook is seen murky with the effects of government stimulus expected to wear off.

"The figures in some ways were a little less than expected overall, and blue-chip shares are strangely weak," said Hiroaki Osakabe, a fund manager with Chibagin Asset Management.

Some analysts said predictions for May had been over-optimistic but others said that overall the figures remained encouraging and pointed to economic recovery. "Certainly there's still some concern about the future, but the Bank of Japan tankan later this week is likely to confirm that the economy is recovering, just the way the industrial output data has," said Nagayuki Yamagishi, a strategist at Mitsubishi UFJ Securities.

"Industrial output may have shown a bit of weakness in terms of capital spending, but cars and so on are pretty strong. There are signs of light."

The benchmark Nikkei .N225 shed 93.92 points to 9,783.47, erasing morning gains, while the broader Topix lost 1.2 percent to 915.32.

The Nikkei has taken a breather from a three-month rally that buoyed it to an eight-month intraday high of 10,170.82 earlier in June but is still on track for its best quarter since 1995, having risen around 22 percent so far in the April-June quarter.

Still, a possibly negative technical signal emerged when the Nikkei's five-day moving average broke below its 25-day moving average, a move known as the "Death Cross."

But market analysts said if the Nikkei manages to hold above its 25-day moving average, now 9,743, it should be able to keep from falling.

"Closing or breaking below this would signal some weakness ahead," said Yutaka Miura, a senior technical analyst at Mizuho Securities.

OIL FALLS, TRADING HOUSES SINK

With investors looking ahead to the Bank of Japan's quarterly "tankan" survey of business sentiment on Wednesday, trade was thin and centred more on individual shares than broader sectors, though resource shares took a battering as crude oil prices fell.