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Free calculators for your camper van electrical installation.
Calculators
Guides
142 tools available
Batteries
3912V Water Pump Van: Battery Drain Calculator (2026)200Ah LiFePO4 Batteries for Vans: Test & Comparison (2026)24V Inverter on 48V Battery? What Actually Happens (2026)AGM Battery Size Calculator for Van Build (2026)Battle Born 100Ah LiFePO4 Review: Worth $925? (2026)Best LiFePO4 Van Battery (2026): 5 Tested, 1 WinnerChallenger 348 XLB: Installing a LiFePO4 Battery (2026)Choosing Van Battery: LiFePO4 vs AGM Honest Math (2026)DC-DC Charger for Lithium Van Battery: Sizing Guide (2026)Dethleffs Globebus: Adding Solar & Upgrading the Battery (2026)Elefast 330Ah LiFePO4: Capacity Test & Install Review (2026)Epoch 48V 100Ah LiFePO4 Battery Review (2026) — 5.12kWhHelp With SOK 12V 206Ah Batteries Not Balancing (2026)Home Battery Backup: Steal Vanlife Tech for Home (2026)Horse Trailer LiFePO4 Upgrade: Ditch the Lead-Acid (2026)How to Charge Your Van Battery from a House Outlet (2026)Installing 2 Batteries in a Van: Parallel Wiring Guide (2026)Is Your Rvpozwer 12V 300Ah LiFePO4 Battery Really 300Ah? (2026)LiFePO4 Battery for Campervan: Size Guide 2026LiFePO4 Battery Shutting Down Early? Here's Why (2026)LiFePO4 Battery Size Calculator: Get Your Exact Ah (Free) (2026)LiFePO4 Battery: Mount Inside or Outside the Van? (2026)LiFePO4 Cells Won't Balance — Diagnosis & Fix (2026)LiFePO4 vs AGM Battery: Real Cost per Cycle (2026)MPPT Shows 100% But Battery at 70% — Fix (2026)Off-Grid Tiny House Battery Sizing: LiFePO4 Calculator (2026)Off-Grid Truck Camper Solar & Battery Sizing (2026)Power Station vs Leisure Battery: 5-Year Cost Compared (2026)RV Converter Charger + Lithium: Compatibility Guide (2026)Single vs Dual Battery in a Van: Which Setup Wins? (2026)Solar + LiFePO4 in Cold Weather: Winter Camping Guide (2026)Solar ROI on a Van 2026: Panel and Battery PaybackVan Battery + Fridge: How Many Days? (Calculator) (2026)Van Battery Autonomy: How Many Days Off-Grid? (Free Calculator)Van Battery Cold Weather: Don't Kill Your LiFePO4 (2026)Van Battery Size Calculator: Find Your Perfect Ah (Free Tool)Van Condensation Fix: 12V Ventilation That Works (2026)Weekend Van Setup: Battery & Solar for 3 Days Off-Grid (2026)Wiring LiFePO4 Batteries in Parallel: Complete Guide (2026)
Solar
25400W Solar on a Van: Is It Enough? Real Test Data (2026)48V RV Solar System: Pre-Install Sanity Check Guide (2026)AC Coupling SolarEdge + LG Chem + Victron Backup (2026)Buettner Solar for Motorhomes: Is the Premium Worth It? (2026)Campervan Solar Calculator — Panel Size & Output (Free) (2026)Complete Solar Kit for a Van: What to Buy & What to Skip (2026)DIY Solar Panel Install on Van Roof: Step-by-Step (2026)Flexible vs Rigid Solar Panels for Vans: Real-World Data (2026)How Many Solar Panels Do You Need for a Camper Van? (2026)How to Choose Solar Panel Wire Size for Your DIY Camper (2026)How to Wire 6x200W Solar Panels on a Van (2026 Guide)Jackery 5000 Plus Voltage Limit: Why 85% Is Normal (2026)MPPT Controller Sizing for Van Solar: Get the Right Amps (2026)MPPT vs PWM Solar: I Tested Both — Real Efficiency Gap (2026)Redarc BCDC1280 Not Charging from Solar — Fix (2026)Renogy 200W Solar Panel for Vans: Real Test & Review (2026)Renogy Rover Won't Charge in the Morning? I Fixed It (2026)Shore Power vs Solar-Only in a Van: Real Autonomy (2026)Solar Panel Shading on Van Roof: Fixes That Work (2026)Solar Panel Size for Sprinter Van: 400–600W (2026)Solar Surplus: How to Divert Excess Production (2026)Solar vs Shore Power for Campervans: Real Autonomy (2026)Solar Wiring: Series vs Parallel — Which Wins? (2026)Van Solar Panel Winter Output: Real Production Numbers (2026)Victron MPPT Keeps Shorting Out: Causes & Fixes (2026)
Wiring
3Inverters
12Adding 230V/120V Outlets to Your Van: Wiring Guide (2026)Best 2000W Pure Sine Inverter for Vans: Top Picks (2026)Best Inverter for a Food Truck: 3000W or 5000W? (2026)Coffee Maker in a Van: What Inverter Size Do You Need? (2026)Dual Inverter 50A Camper: 6kW Wiring Blueprint (2026)EG4 3kW Inverter PV Input Not Working — Fix (2026)Inverter-Charger Combo vs Separate: Honest Take (2026)Pure Sine vs Modified Sine Inverter: Which for Your Van? (2026)RCD / GFCI in Your Van 230V: Is It Required? (2026)RV Converter Buzzing or Humming: How to Fix It (2026)Van Inverter Sizing: Don't Overpay (Free Calc) (2026)Victron MultiPlus 2000 vs 3000: Honest Review (2026)
Van build
5712V Air Conditioner in a Van: Power Reality Check (2026)12V vs 24V Van Electrical System — Which One? (2026)3M Thinsulate SM600L Van Insulation Review 42mm (2026)ALLPOWERS R2500 V2 Van Review: 4-Month Field Test (2026)Amp Hours Explained for Vanlife & RV (2026) — Simple MathArmaflex AF 19mm Van Insulation: Honest Review (2026)Armaflex vs Thinsulate vs Cork: Van Insulation (2026)Bluetti AC180 in a 12V Van System: Honest Guide (2026)Camper Van Climate Control: Real Power Costs (2026)Complete Campervan Electrical System Calculator (2026)DC-DC vs Split Charge for Van Alternators (2026)Diesel Heater Sizing: 2kW vs 5kW — Which Fits? (2026)Diesel Heater Van: Real Power Draw Measured (2026)Diesel vs Electric Heater Van: My Honest Pick (2026)Digital Nomad Campervan Power Calculator (2026)Digital Nomad Van Setup: Work From Your Van (2026)EcoFlow Delta 2 in a Van: Is a Power Station Worth It? (2026)EcoFlow DELTA 3 Classic Van Review: 3-Month Test vs Delta 2 (2026)EcoFlow GLACIER Classic 45L Van Fridge Review: 8 Months Tested (2026)EG4 12000XP in an RV: Grounding & Setup (2026)Energy Crisis 2026: The Camper Van as a Real SolutionFamily Van Setup: Electrical for a Couple With Baby (2026)Fiat Ducato Campervan Electrical Guide (2026)Ford Transit 2026: What to Order for a Van Conversion (2026)Ford Transit Campervan Electrical: Full Setup Guide (2026)Gaming PC in a Van: Power Consumption and Setup Guide (2026)Gas vs Induction Cooking in a Van: The Real Trade-Off (2026)Hot Water in a Van: Gas vs 12V vs Solar (2026)Induction Cooking in a Van: Ditch the Gas Bottle (2026)Insulate a van for winter: condensation, R-value (2026)Jackery Explorer for Van Life: Real Autonomy (2026)MaxxFan Deluxe Power Consumption: Real Numbers (2026)REDARC BCDC Alpha 100R Install & Wiring Guide (2026)Renault Trafic Campervan Electrical: Setup Guide (2026)Shore Power in a Van: Campsite Electric Hookup Guide (2026)Starlink Mini in a Van: Installation & Power Setup (2026)Starlink Van: Real Power Draw & Battery Impact (2026)Van 12V LED Lighting Wiring Guide (2026) — Sizing & LayoutVan Build Electrical System: Beginner Sizing Guide (2026)Van Electrical Autonomy: Off-Grid Independence in 2026Van Electrical Cost: $900 to $5k — What I Actually Paid (2026)Van Electrical Installation: Complete Step-by-Step Order (2026)Van Electrical Mistakes to Avoid Before Connecting (2026)Van Electrical Regulations: US, UK, EU Rules (2026)Van Electrical Setup €1000: The Perfect Sweet Spot (2026)Van Electrical Setup Under 500€: Is It Possible? (2026)Van Electrical Sizing: Battery, Solar & Inverter Guide (2026)Van Electrical Wiring Diagram: How to Plan Yours (2026)Van Fridge Power Draw: I Measured 40-90 Ah/Day (2026)Van Grounding: The Electrical Mistake That Burns Vans (2026)Van Insulation Beginner Step by Step Guide (2026)Van vs Tiny House: Electrical Autonomy (2026)Victron Cerbo GX Van Setup: Worth It? (2026)Victron Energy Complete Van System: Worth the Premium? (2026)Victron Orion 30A DC-DC Charger Van Review (2026)VW Crafter Campervan Electrical Guide: Wiring Tips (2026)Winter Van Setup: Vanlife in Mountains & Cold Weather (2026)
Other
612V vs 48V for Overlanding: Which Voltage? (2026)Euro 6 Alternator: Why Your Van Battery Won't Charge (2026)Redarc BCDC vs Victron Orion XS: DC-DC Shootout (2026)Sterling Power BB1260 Review — 60A B2B Charger (2026)Victron Orion-Tr Smart DC-DC Charger Review (2026)VW T5/T6 California Electrical Upgrade: What Fits (2026)