diff --git a/source/docs/hardware/hardware-basics/robot-battery.rst b/source/docs/hardware/hardware-basics/robot-battery.rst index 68a545cecf..62a4ed1c7a 100644 --- a/source/docs/hardware/hardware-basics/robot-battery.rst +++ b/source/docs/hardware/hardware-basics/robot-battery.rst @@ -32,11 +32,15 @@ Damaged batteries should be safely disposed of as soon as possible. All retailer ### Battery Leads -Battery leads must be copper, minimum size (cross section) 6 AWG (16mm2, 7 SWG) and maximum length 12", color coded for polarity, with an Anderson SB connector. Standard 6AWG copper leads with Pink/Red SB50 battery leads often come in the Kit of Parts and are sold by FRC vendors. +Battery leads should be copper, minimum size (cross section) 6 AWG (16mm2, 7 SWG) and a minimum length to reach where they need to go on your robot, color coded for polarity, with an Anderson SB connector. Standard 6AWG copper leads with Pink/Red SB50 battery leads often come in the Kit of Parts and are sold by FRC vendors. + +.. note:: There is no maximum length of wire leads coming off the battery. However, keeping runs as short as possible is best for robot performance. #### Lead Cables -Tinned, annealed, or coated copper is allowed. Do not use CCA (copper clad aluminum), aluminum, or other non-copper base metal. The conductor metal is normally printed on the outside of the insulation with the other cable ratings. +Tinned, annealed, coated copper, or CCA (copper clad aluminum) is allowed. Do not use regular aluminum wire, or other non-copper base metal. The conductor metal is normally printed on the outside of the insulation with the other cable ratings. + +.. note:: In 2026, all robot electrical wires may now be CCA (copper clad aluminum) (including the main power cables) but this is not recommended. Typically a given CCA wire gauge is equivalent to the next smaller copper wire gauge so 6 AWG CCA is closer to 7 or even 8 AWG copper for current carrying capacity. Wire size 6AWG is sufficient for almost all robots and fits standard SB50 contacts. A small number of teams adopt larger wire sizes for marginal performance benefits.