46 CFR § 112.55-15 - Capacity of storage batteries.

---
identifier: "/us/cfr/t46/s112.55-15"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 112.55-15 - Capacity of storage batteries."
title_number: 46
title_name: "Shipping"
section_number: "112.55-15"
section_name: "Capacity of storage batteries."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "J"
subchapter_name: "ELECTRICAL ENGINEERING"
part_number: "112"
part_name: "EMERGENCY LIGHTING AND POWER SYSTEMS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.2."
regulatory_source: "CGD 74-125A, 47 FR 15267, Apr. 8, 1982, unless otherwise noted."
cfr_part: "112"
---


# 112.55-15 Capacity of storage batteries.

(a) A storage battery for an emergency lighting and power system must have the capacity—

(1) To close all watertight doors two times;

(2) To open all watertight doors once; and

(3) To carry the remaining emergency loads continuously for the time prescribed in § 112.05-5(a), table 112.05-5(a).

(b) At the end of the time specified in paragraph (a) of this section, the potential of the storage battery must be at least 88 percent of the standard voltage.

[CGD 74-125A, 47 FR 15267, Apr. 8, 1982, as amended by CGD 94-108, 61 FR 28288, June 4, 1996; 61 FR 39695, July 30, 1996]