<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MAXWELL
TECHNOLOGIES, INC.'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED JULY 31, 1999
AND IS QUALIFIED IN ITS ENTIRETY TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

                                                  
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          JUL-31-1999             JUL-31-1998
<PERIOD-START>                             AUG-01-1998             AUG-01-1997
<PERIOD-END>                               JUL-31-1999             JUL-31-1998
<CASH>                                           8,839                  21,397
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   50,981                  41,266
<ALLOWANCES>                                   (1,003)                 (1,513)
<INVENTORY>                                     23,627                  19,378
<CURRENT-ASSETS>                                96,670                  83,184
<PP&E>                                          69,599                  63,500
<DEPRECIATION>                                (41,719)                (37,958)
<TOTAL-ASSETS>                                 134,434                 115,385
<CURRENT-LIABILITIES>                           34,432                  32,302
<BONDS>                                            436                   1,218
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           956                     920
<OTHER-SE>                                      96,212                  79,233
<TOTAL-LIABILITY-AND-EQUITY>                   134,434                 115,385
<SALES>                                        179,685                 140,565
<TOTAL-REVENUES>                               179,685                 140,565
<CGS>                                          118,937                  92,919
<TOTAL-COSTS>                                  118,937                  92,919
<OTHER-EXPENSES>                                55,285                  50,032
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 404                     338
<INCOME-PRETAX>                                  5,719                 (1,214)
<INCOME-TAX>                                   (5,776)                     413
<INCOME-CONTINUING>                             11,068                 (1,707)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    11,068                 (1,707)
<EPS-BASIC>                                       1.18                  (0.20)
<EPS-DILUTED>                                     1.12                  (0.20)