4. Uninterruptible power supply
9. Main source of income (3,3)
12. Danish seaport
14. Declare untrue
15. Abide
16. Bombastic declamation
17. Droops
18. Explorer
20. Whinny
21. Kill by electricity
25. Agency the Man came from
27. Types of high-speed aircraft motors
31. Sign of sorrow
33. Carry
34. Praise enthusiastically
35. Very hot rock
36. Slid through a data-reading device
37. Go by
38. Medico

Down

1. Male name
2. Means of power generation
3. 1000 kg
5. Transfer a ball
6. Diabolical
7. Physical treatment for physical ailments
8. Mind
10. Grand Duke of Luxembourg
11. 8 bits
13. Fashion
19. Less widely available
22. Cut
23. Cleanest
24. Flows out
26. Spring
28. Capable
29. Coarsely ground foodstuffs
30. Main island of Indonesia
32. Repeat