Use write_string():

use strict;
use warnings;
use Spreadsheet::WriteExcel;

my $workbook  = Spreadsheet::WriteExcel->new('test.xls');
my $worksheet = $workbook->add_worksheet();
my $col       = my $row = 0;
$worksheet->write_string( $row, $col, '801495E40' );

[download]

Edit: My apologies, but just now noticed that runrig already mentioned this.

In reply to Re: WriteExcel : The text 801495E40 turns into 8.01495E+45 by Kenosis
in thread WriteExcel : The text 801495E40 turns into 8.01495E+45 by voram

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