Battery

1. A battery casing, comprising:

an upper section;

a middle section connected to the top section;

a lower section connected to the middle section;

a positive battery terminal connected to the battery casing;

a negative battery terminal connected to the battery casing;

an external positive terminal removably attached to the positive battery terminal, the external positive terminal including a first positive through hole having a first orientation and a second positive through hole having a second orientation different from the first orientation, the external positive terminal configured to receive a positive battery cable at the first positive through hole or the second positive through hole; and

an external negative terminal removably attached to the negative battery terminal, the external negative terminal including a first negative through hole having a third orientation and a second negative through hole having a fourth orientation different from the third orientation, the external negative terminal configured to receive a negative battery cable at the first negative through hole or the second negative through hole.

2. The battery casing according to claim 1 , wherein the upper section is defined by a first outer perimeter wall extending downwardly from an upper wall, wherein the middle section is defined by a second outer perimeter wall extending upwardly from a first bottom wall, and wherein the lower section is defined by a third outer perimeter wall extending upwardly from a second bottom wall.

3. The battery casing according to claim 2 , further comprising a removable cover disposed within an upper receiver in the upper wall of the upper section of the battery casing.

4. The battery casing according to claim 3 , wherein the removable cover is connected to the upper wall of the upper section of the battery casing by a fastener.

5. The battery casing according to claim 1 , wherein the positive battery terminal is spaced apart from the negative battery terminal, and wherein the positive battery terminal and negative battery terminal extend through an upper wall of the upper section of the battery casing.

6. The battery casing according to claim 5 , wherein the positive battery terminal is an insert molded type positive battery terminal insert molded type into the upper wall of the upper section of the battery casing, and wherein the negative battery terminal is an insert molded type negative battery terminal insert molded type into the upper wall of the upper section of the battery casing.

7. The battery casing according to claim 1 , wherein the upper section and the lower section of the battery casing are adhered together during assembly of the battery casing.

8. The battery casing according to claim 1 , wherein the middle section and the lower section of the battery casing are configured to snap fit together during assembly of the battery casing.

9. The rechargeable battery of claim 1 , wherein:

the external positive terminal further comprises a third positive through hole having a fifth orientation different from the first orientation and the second orientation, the external positive terminal further configured to receive the positive battery cable at the third positive through hole; and

the external negative terminal further comprises a third negative through hole having a sixth orientation different from the third orientation and the fourth orientation, the external negative terminal further configured to receive the negative battery cable at the third negative through hole.

10. The rechargeable battery of claim 9 , further comprising a first bolt configured to removably attach the external positive terminal to the positive battery terminal and a second bolt configured to removably attach the external negative terminal to the negative battery terminal.

11. A rechargeable battery, comprising:

a battery casing comprising an upper section, middle section, and lower section connected together, the upper section including a top surface and an indented receiver portion;

a positive battery terminal connected to the battery casing;

a negative battery terminal connected to the battery casing;

a rechargeable battery pack disposed within the battery casing; and

a cover configured to removably attach to the indented receiver portion of the upper section, the cover having a top surface that is substantially flush with the top surface of the upper section when the cover is attached to the indented receiver portion.

12. The rechargeable battery according to claim 11 , further comprising a circuit board, a positive cable connecting the rechargeable battery pack to the circuit board, and a negative cable connecting the rechargeable battery pack to the circuit board.

13. The rechargeable battery according to claim 12 , wherein the middle section and the lower section of the battery casing snap fit together during assembly of the battery casing.

14. The rechargeable battery according to claim 12 , wherein the circuit board is physically connected to the positive battery terminal and the negative battery terminal.

15. The rechargeable battery according to claim 14 , wherein the positive battery terminal includes a threaded portion extending into the battery casing and physically connecting to the circuit board, and the negative battery terminal includes a threaded portion extending into the battery casing and physically connecting to the circuit board.

16. The rechargeable battery according to claim 11 , wherein the upper section is defined by a first outer perimeter wall extending downwardly from an upper wall, wherein the middle section is defined by a second outer perimeter wall extending upwardly from a first bottom wall, and wherein the lower section is defined by a third outer perimeter wall extending upwardly from a second bottom wall.

17. The rechargeable battery according to claim 11 , wherein the positive battery terminal is spaced apart from the negative battery terminal, and wherein the positive battery terminal and negative battery terminal extend through an upper wall of the upper section of the battery casing.

18. The rechargeable battery according to claim 17 , wherein the positive battery terminal is an insert molded type positive battery terminal insert molded type into the upper wall of the upper section of the battery casing, and wherein the negative battery terminal is an insert molded type negative battery terminal insert molded type into the upper wall of the upper section of the battery casing.

19. The rechargeable battery according to claim 11 , further comprising an external removable positive terminal connected to the positive battery terminal, and an external removable negative terminal connected to the negative battery terminal.

20. The rechargeable battery according to claim 11 , wherein the upper section and the lower section of the battery casing are adhered together during assembly of the battery casing.

21. The rechargeable battery according to claim 11 , wherein the circuit board comprises multiple spaced apart copper plates.

22. The rechargeable battery according to claim 21 , wherein the circuit board comprises one or more MOSFETs bridging a pair of the spaced apart copper plates.

23. The rechargeable battery according to claim 22 , wherein the circuit board comprises one or more current sense resistors bridging a pair of second spaced apart copper plates.

24. The rechargeable battery according to claim 21 , wherein each copper plate comprises one or more inclined edges relative to a length dimension of the circuit board.

25. The rechargeable battery according to claim 21 , wherein each copper plate comprises one or more transverse edges relative to a length dimension of the circuit board.

26. The rechargeable battery according to claim 11 , further comprising one or more trays connected to a lower end of the battery casing.

27. The rechargeable battery according to claim 26 , wherein the one or more trays is configured so that the lower end of the battery casing nests within the one or more trays.

28. The rechargeable battery according to claim 27 , wherein the one or more trays is configured with one or more protrusions to connect with one or more receivers in the lower end of the battery casing.

29. The rechargeable battery according to claim 26 , wherein the one or more trays is configured with one or more protrusions to connect with one or more receivers in the lower end of the battery casing.

30. The rechargeable battery according to claim 26 , wherein the one or more trays is connected to the lower section of the battery casing.

31. The rechargeable battery according to claim 26 , wherein the one or more trays is multiple trays connected together with the battery casing.

32. The rechargeable battery according to claim 31 , wherein the multiple trays have a same height.

33. The rechargeable battery according to claim 31 , wherein the multiple trays have at least two different heights.

34. The rechargeable battery according to claim 11 , further comprising a battery tray for extending a height of the rechargeable battery, the battery tray comprising a lower wall with an inner perimeter wall extending upwardly from the lower wall and an outer perimeter wall extending upwardly from the lower wall, the inner perimeter wall being spaced apart from the outer perimeter wall, the battery tray being configured to connect to the lower section of the rechargeable battery.

35. The rechargeable battery according to claim 34 , wherein the battery tray is configured so that the lower section of the rechargeable battery nests within the battery tray.

36. The rechargeable battery according to claim 35 , wherein a height of the inner perimeter wall is less than a height of the outer perimeter wall.

37. The rechargeable battery according to claim 35 , wherein the battery tray comprises one or more protrusions configured to connect to one or more receivers provided in a bottom portion of the rechargeable battery.

38. The rechargeable battery according to claim 37 , wherein the battery tray is rectangular-shaped, and the one or more protrusions are four protrusions located adjacent to four corners of the battery tray cooperating with four recessed holes in the bottom portion of the rechargeable battery.

39. The rechargeable battery according to claim 34 , wherein the battery tray comprises one or more protrusions configured to connect to one or more receivers provided in a bottom portion of the rechargeable battery.

40. The rechargeable battery according to claim 34 , wherein the battery tray is bottomless inside the inner perimeter wall.

41. The rechargeable battery according to claim 34 , wherein the battery tray is provided with a bottom wall located inside and connected to the inner perimeter wall.

42. The rechargeable battery according to claim 11 , wherein the cover includes a bolt head receiver and the indented receiver portion of the upper section includes an anchor having a threaded hole, wherein a bolt is used to secure the cover to the indented receiver portion at the bolt head receiver and the anchor.

43. The rechargeable battery according to claim 11 , further comprising a battery management system comprising a circuit board, the circuit board electrically connected to the positive battery terminal and the negative battery terminal, the circuit board being electrically connected to the rechargeable battery pack.