---
kind: "section"
citation: "47 C.F.R. § 80.861"
title: "47"
number: "80.861"
heading: "Required capacity."
url: "https://uscodex.org/cfr/47/80.861"
---

# §80.861. Required capacity.


If the main power supply or the reserve power supply provided for the purpose of complying with §§ [80.859](/cfr/47/80.859.md) and [80.860](/cfr/47/80.860.md) consists of batteries, the batteries must have sufficient reserve capacity available at all times while the vessel is leaving or attempting to leave a harbor or port for a voyage in the open sea, and while being navigated in the open sea outside of a harbor or port, to permit operation of the radiotelephone transmitter and the required receivers for at least 6 hours continuously under normal working conditions.


## Notes

### Authority

Authority: 47 U.S.C. 151-155, 301-609; 3 U.S.T. 3450, 3 U.S.T. 4726, 12 U.S.T. 2377.

### Source

Source: 51 FR 31213, Sept. 2, 1986, unless otherwise noted.