Marine Solar Myths Worth Ignoring
A 100-watt panel does not make 100 watts, and clouds do not stop charging. The real numbers behind the most common marine…
Lead Editor, ABYC-informed marine electrician
112 articles publishedSahil Sharma leads the writing at HarborWatt, where he turns years of hands-on boat electrical work into guides a weekend owner can actually follow. He came up wiring and troubleshooting 12V systems — battery banks, lithium conversions, solar arrays, and the wiring that ties them together — and learned the expensive lessons so you do not have to. He tests gear the slow way, living with it on the water, and writes in plain language with real numbers and ABYC-minded practices. When he is not chasing a voltage drop or sizing a charger, he is out on the water making sure the advice holds up.
A 100-watt panel does not make 100 watts, and clouds do not stop charging. The real numbers behind the most common marine…
Why marine LiFePO4 is safer than the lithium in the headlines, and the fusing, charging, and cold-weather rules that keep your bank…
A step-by-step guide to tracking down and killing electrical noise on your boat electronics, with a real fish-finder fix and the numbers…
The five inverter installation mistakes marine electricians see most on boats, plus the simple fix for each one before it costs you.
A hands-on guide to crimping marine connectors that resist corrosion and vibration, with a real bilge-pump wiring example and the mistakes to…
Six marine solar install mistakes that waste power on boats, from thin wire and shading to bad fusing, with a clear fix…
Concrete floors are innocent, amp-hour labels lie, and undercharging is the real killer. The battery myths boat owners pay for, corrected.
A plain-spoken head-to-head on battery isolators vs VSRs, with a comparison table, real numbers, and a clear pick for most boats.
A DC-DC charger caps alternator current so lithium cannot cook it. Here is when you need one, what size to buy, and…
How NMEA 2000 networking connects your GPS, sounder, and engine on one cable, plus the termination and power rules that keep it…
Drop-in vs custom lithium, compared honestly by a marine electrician: cost per amp-hour, install time, BMS control, warranty, and which fits your…
A beginner-friendly primer on upgrading your boat's alternator, from sizing to smart regulators, so you fill a big house bank fast.