Sea & Land Supply Blog
Laying Up a Lithium Boat for a New England Winter
Battery Management
Epoch
Lithium Batteries
Marine Electrical
MG Energy
Victron Energy
WinterizationNov 4, 2026
Epoch, Victron, MG Energy and Mastervolt give different answers on how full to leave a lithium bank over the winter....
How to Size a Boat Battery Bank: Day Sailers, Fishing Boats, Cruisers and Offshore
AGM Batteries
Battery Management
Battery Sizing
Lithium Batteries
Marine Electrical
Power Audit
Victron EnergyNov 4, 2026
Battery banks fail because they are too small for the boat, not because they are old. Here is how to...
Going Lithium Without Going Wrong: A Pre-Retrofit Guide for Boat Owners
ABYC E-13
Battery Management
Fusing
LiFePO4
Lithium Batteries
Marine Electrical
Victron EnergyNov 3, 2026
A drop-in lithium battery is not a drop-in lithium system. This pre-retrofit guide covers lithium vs. lead acid, sizing the...
High-Output Marine Alternators: The Modern Replacement for the Onboard Generator
Alternators
Balmar
Battery Charging
External Regulator
Lithium Batteries
Marine Electrical
WakespeedNov 3, 2026
A high-output alternator upgrade is rarely a drop-in. This pre-installation guide covers the six parts an upgrade touches, internal vs....
Selecting Batteries for your Boat
AGM Batteries
Battery Management
Boat Batteries
Boat Maintenance
Lithium Batteries
Marine ElectricalFeb 24, 2025
Compare flooded lead acid, 6V golf cart, AGM, gel, carbon foam and lithium boat batteries. This guide explains the terminology,...
