Category: Electric systems

25/07/2026

Rev counter for our engine

I am surprised and concerned at how expensive some original parts for our boat engines can be.My Yanmar 2GM20F engine did not come with a rev counter, a tachometer, and when I started looking for the original part, especially the engine sensor, I almost fell on my ass: 200 euros for the engine sensor and at least 100 more for the clock !! A search […]

11/07/2026

12V Boat Fridge: How to Reduce Power Consumption and Save Your Batteries

A 12V fridge can become one of the biggest electrical loads on a boat. It runs 24 hours a day, works especially hard during summer, and, if the installation is not properly adjusted, it can drain the batteries much faster than expected. In episode 122 of The Low Cost Sailor, we look at how a compressor fridge really works, which factors determine its energy consumption, […]

04/07/2026

The best low cost battery monitors

Today we are going to get into the issue of batteries, one of the most expensive goods on our boats and the easiest to break down or run out, causing us the consequent annoyances. In the video we can see the basics of the monitors, the simplest and cheapest that only control the battery voltage, those that already allow us to know at what rate […]

11/04/2026

WiFi controller for switch panel

In this post we are going to see how to automate the switch panel of our boat, through a series of controllers and WiFi relays, to be able to manage it remotely through our mobile phone or a tablet or a small remote control or even directly with the voice. This will be very useful when it comes to turning on navigation or anchoring lights, […]

24/01/2026

All the Secrets of LED Strips on Board

Power consumption, dimming, remote control and low-cost automation LED lighting is probably one of the cheapest, quickest and most effective upgrades you can make on a boat. Not only does it drastically reduce electrical consumption, but it also rejuvenates the interior, improves onboard comfort and multiplies lighting possibilities, especially at night. In this article, we explain everything you need to know about LED strips on […]