Guides, comparisons and straight answers

Lithium house banks, charging that works at anchor and underway, and why marine charging upgrades get a system review.

What a complete RV or van system includes, the three kit levels, and which one fits how you travel.

Solar, storage and power conversion for cabins, sheds and remote buildings — including when a generator still earns its place.

Size from your daily watt-hours and the days you want without a recharge — not from the amp-hours on a product page.

The sun-hours method, per-kit solar sizing, and what to do when the roof will not fit enough panels.

Usable capacity, charging, cold weather and cycle life — including when AGM is genuinely the better choice.

They solve different problems and pair well. Where one stops and the other starts.

Start with the loads, not the battery. Daily watt-hours, how long you need to run without recharging, and why storage and charging are one decision.

Peak sun hours, real-world losses, and why the array is sized against the same energy budget as the battery bank.

Not without help. What a stock alternator does to a lithium bank, and the two safe ways to charge from an engine.

The alternator makes the power; the charger controls how it reaches the house bank. When that job needs its own device, and when it does not.

Loads, bank sizing, recharging, monitoring, solar and protection — in the order they actually matter.

Battery management is the most talked-about part of a lithium system and the least clearly explained. What it does, and what it does not.

Voltage alone will not tell you how much usable energy is left. What a shunt measures, and what it cannot see.

A product manual explains a component. A wiring diagram explains your system — and when a build genuinely needs one.

A 600Ah bank, a high-output alternator and regulated charging — for boats where refilling the bank is the real problem.

A 200Ah lithium bank with matched solar charging — what is in it, why, and what it deliberately leaves out.

AGM storage, a modest solar array and light AC loads — what a straightforward starter architecture covers, and what it is not designed to do.

System voltage decides how much current your wiring carries. What changes between 12V, 24V and 48V, and why it is the one decision that is hard to reverse.

Most of what you run is already DC. What that means for how a system should be designed.

The five failures we see most, all of them decisions made early and expensive to undo later.