Lithium Battery Upgrades
Charging Lithium Boat Batteries in Cold
Charging a lithium boat battery below freezing quietly destroys it. Here is how to measure, warm, and set cutoffs so you charge…
Inverters and Charging
Installing a DC-DC Charger on a Boat
A DC-DC charger protects your alternator and gives a lithium or AGM house bank the charge it wants. Here is how to…
Marine Battery Banks
Wiring Batteries in Series and Parallel
Series adds voltage, parallel adds capacity. A hands-on guide to wiring a marine battery bank correctly, with worked numbers and safety tips.
Lithium Battery Upgrades
How a Marine Battery BMS Actually Works
The little green board inside every lithium pack is its brain. Here is what a marine battery BMS does and how to…
Inverters and Charging
How to Size a Marine Inverter
A practical, step-by-step guide to sizing a marine inverter to your real loads, battery bank, and cable, with a worked example and…
Lithium Battery Upgrades
Are Drop-In LiFePO4 Batteries Worth It?
A straight answer on whether drop-in LiFePO4 batteries pay off on a boat, plus the charging and cold-weather catches nobody prints on…
Inverters and Charging
Boat Inverter and Charger Guide
An inverter makes household AC power at anchor and a charger refills your bank at the dock. Here is how to size,…
12V Wiring Systems
12V Boat Wiring Guide for Beginners
The fundamentals of 12v boat wiring: circuits, wire gauge, fuses, voltage drop, and grounding, explained by a marine electrician who has rewired…
Marine Battery Banks
Battery Bank Cost by Chemistry
Real 2026 price ranges for flooded, AGM, gel, and lithium house banks, plus the wiring and labor costs that decide what the…
Lithium Battery Upgrades
Lithium Boat Battery Upgrade Guide
What really changes when you switch a boat to lithium: usable power, the BMS, charging, and how to size the bank without…
Lithium Battery Upgrades
Lithium Battery Winter Storage Checklist
A practical lithium battery winter storage checklist so your LiFePO4 bank comes back healthy in spring instead of flat, bricked, or quietly…