U.S. Code of Federal Regulations
Regulations most recently checked for updates: Jan 27, 2020
(a) A battery cell, when inclined at 40 degrees from the vertical, must not spill electrolyte.
(b) Each fully charged lead-acid battery must have a specific gravity that meets section 22 of IEEE 45-2002 (incorporated by reference; see 46 CFR 110.10-1).
(c) Batteries must not evolve hydrogen at a rate exceeding that of a similar size lead-acid battery under similar charging condition.
(d) Batteries must be constructed to take into account the environmental conditions of a marine installation, including temperature, vibration, and shock.