** Shares of Australia's Charger Metals CHR.AX rise as much as 2.4% to A$0.084, their biggest intraday pct gain since February 27
** The battery and precious metals explorer provides positive drilling update at its Lake Johnston Lithium and Gold Project in Western Australia
** Co says drilling finds strong diamond and lithium reserves
** "Drilling seeks to extend existing lithium resource," says Bryan Dixon, managing director of Charger Metals
** CHR stock down 30%, YTD
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))