FRCTools

R613       *No high voltage allowed except for LEDs. Any active electrical item that is not an actuator (specified in R501) or power regulation device (specified in R505) is considered a CUSTOM CIRCUIT. CUSTOM CIRCUITS shall not provide regulated output voltages exceeding 5V, except if solely used for powering LEDs, but may pass through unregulated battery voltage.

Similar Rules

Rule R618
R618       *Do not modify critical power paths. CUSTOM CIRCUITS shall not directly alter the power or control pathways between:
Rule R610
R610       *Fuse ratings should not be altered. Fuses must not be replaced with fuses of higher rating than originally installed or according to manufacturer's specifications; fuses may not be shorted out. Fuses must not exceed the rating of those closer to the battery. If necessary, a fuse may be replaced with a smaller rating. Replaceable fuses must be single use only; self-resetting fuses (breakers) are not allowed.
Rule R602
R602       *Other batteries are only allowed for peripheral devices and LEDs only. COTS USB battery packs with a capacity of 100Wh or less (27,000mAh at 3.7V), with 5V/5A max output or 12V/5A max output using USB-PD per port, and batteries integral to a self-contained camera (e.g., GoPro style camera) may be used provided they are:
Rule R619
R619       *Do not mix and match power on or between power regulation devices. The following rules must be adhered to when using power on any power regulation device (per R505):