12 Volt Blog
Guides, reviews, and tips for RV, marine, and off-grid 12V power systems.
Best LiFePO4 Batteries for RVs in 2026
Compare the top LiFePO4 batteries for RVs in 2026 — BattleBorn, Renogy, and Ampere Time head-to-head. See which lithium battery fits your rig and budget.
April 10, 2026
How to Size Your 12V Battery Bank
Learn how to size your 12V battery bank the right way — with real load calculations, DoD formulas, and autonomy days explained. Get the formula now.
April 8, 2026
AGM vs Lithium Batteries: Which Is Right for Your RV?
AGM or lithium for your RV? We break down cost, weight, lifespan, and real-world performance so you can pick the right battery chemistry for your rig.
April 5, 2026
Beginner's Guide to RV Solar
Everything you need to start with RV solar: panels, MPPT charge controllers, battery sizing, and wiring — explained simply for beginners. Learn how.
April 1, 2026
Best Battery Monitors for RVs and Boats in 2026
Compare the best battery monitors for RVs and boats in 2026. From Bluetooth smart shunts to budget LCD displays — see which monitor fits your setup best.
March 28, 2026
Pure Sine Wave vs Modified Sine Wave Inverters: Does It Matter?
Pure sine or modified sine wave inverter for your RV? We explain the real-world differences and which devices need clean power — compare and choose right.
March 24, 2026
How to Wire 12V LED Lights in Your RV or Van
Step-by-step guide to wiring 12V LED lights in your RV, van, or boat. Master wire sizing, dimmer compatibility, and circuit design to avoid common mistakes.
March 20, 2026
Winter RV Battery Care: Protecting Your Bank in Cold Weather
Cold weather kills RV batteries fast if you're unprepared. Learn exactly how to protect your battery bank through winter storage and cold-weather camping.
March 17, 2026
Understanding Amp-Hours and Watt-Hours: 12V Power Explained
Confused by amp-hours and watt-hours? Learn exactly what these 12V power measurements mean and how to use them to size your RV battery system correctly.
March 13, 2026
MPPT vs PWM Charge Controllers: Which Should You Buy?
MPPT or PWM charge controller for your RV solar setup? We compare efficiency, cost, and use cases — find out which controller is right for your build.
March 10, 2026