DIY solar guides, honest equipment reviews, and free sizing tools.https://sunforgelab.com/https://sunforgelab.com/blog/guides/diy-lifepo4-battery-bank/https://sunforgelab.com/blog/guides/diy-lifepo4-battery-bank/Step-by-step guide to building a LiFePO4 battery bank for solar — cell selection, BMS wiring, fusing, and safety from hands-on experience.Sat, 04 Apr 2026 00:00:00 GMTguideslifepo4battery bankdiy48vhttps://sunforgelab.com/blog/guides/getting-started-diy-solar/https://sunforgelab.com/blog/guides/getting-started-diy-solar/Everything you need to know before building your first DIY solar system — from panel selection to battery sizing.Sat, 04 Apr 2026 00:00:00 GMTguidessolar basicsbeginneroff-gridgrid-tiedplanningsystem sizingLiFePO4wiringNEC codehttps://sunforgelab.com/blog/guides/grid-tied-battery-backup/https://sunforgelab.com/blog/guides/grid-tied-battery-backup/How hybrid solar systems work, what they cost, and where DIY ends and an electrician begins — from someone running one.Sat, 04 Apr 2026 00:00:00 GMTguidesgrid-tiedbattery backuphybrid inverternet meteringhttps://sunforgelab.com/blog/guides/mppt-charge-controller-guide/https://sunforgelab.com/blog/guides/mppt-charge-controller-guide/Step-by-step guide to sizing, installing, and programming an MPPT charge controller for your DIY solar system with real-world examples.Sat, 04 Apr 2026 00:00:00 GMTguidesmpptcharge controllersizinginstallationhttps://sunforgelab.com/blog/guides/rv-van-solar-build-guide/https://sunforgelab.com/blog/guides/rv-van-solar-build-guide/Plan and install a mobile solar system for your van or RV — panel selection, battery sizing, wiring, and shore power integration.Sat, 04 Apr 2026 00:00:00 GMTguidesrvvanmobile solar12vcampinghttps://sunforgelab.com/blog/guides/solar-panel-wiring-series-parallel/https://sunforgelab.com/blog/guides/solar-panel-wiring-series-parallel/When to wire solar panels in series, parallel, or series-parallel — with real voltage/current math and shade impact analysis.Sat, 04 Apr 2026 00:00:00 GMTguideswiringsolar panelsseriesparallelmppthttps://sunforgelab.com/blog/reference/federal-solar-tax-credit-itc-2026/https://sunforgelab.com/blog/reference/federal-solar-tax-credit-itc-2026/How the federal solar Investment Tax Credit works in 2026, what qualifies for DIY systems, and how to claim it on Form 5695.Sat, 04 Apr 2026 00:00:00 GMTreferencetax credititcfederalsavings2026https://sunforgelab.com/blog/reference/mc4-connectors-solar-wiring/https://sunforgelab.com/blog/reference/mc4-connectors-solar-wiring/How to crimp MC4 connectors correctly, which tools you actually need, wire types for outdoor solar runs, and why mixing connector brands causes failures.Sat, 04 Apr 2026 00:00:00 GMTreferencemc4connectorscrimpingwiringtoolshttps://sunforgelab.com/blog/reference/nec-solar-code-requirements/https://sunforgelab.com/blog/reference/nec-solar-code-requirements/NEC Article 690 explained in plain language — rapid shutdown, grounding, overcurrent protection, wire sizing, labeling, and what inspectors actually look for.Sat, 04 Apr 2026 00:00:00 GMTreferencenecelectrical codepermitssafetyresidentialhttps://sunforgelab.com/blog/reference/solar-wire-gauge-chart/https://sunforgelab.com/blog/reference/solar-wire-gauge-chart/AWG wire sizing tables for 12V, 24V, and 48V solar systems. NEC ampacity ratings, voltage drop calculations, and derating factors.Sat, 04 Apr 2026 00:00:00 GMTreferencewire gaugeawgwiringnecvoltage drophttps://sunforgelab.com/blog/reviews/best-lifepo4-batteries-2026/https://sunforgelab.com/blog/reviews/best-lifepo4-batteries-2026/Hands-on comparison of 6 popular LiFePO4 batteries for DIY solar — real capacity tests, BMS features, price per kWh, and which to buy.Sat, 04 Apr 2026 00:00:00 GMTreviewslifepo4batteryreviewcomparison2026https://sunforgelab.com/blog/reviews/best-mppt-charge-controllers-2026/https://sunforgelab.com/blog/reviews/best-mppt-charge-controllers-2026/Six MPPT charge controllers tested over 30 days. Real efficiency data, tracking speed, app quality, and top picks.Sat, 04 Apr 2026 00:00:00 GMTreviewsmpptcharge controllerreviewcomparison2026https://sunforgelab.com/blog/reviews/eg4-6000xp-review/https://sunforgelab.com/blog/reviews/eg4-6000xp-review/After 18 months running an EG4 6000XP daily, here's what works, what doesn't, and whether it's worth $1,500 for DIY solar.Sat, 04 Apr 2026 00:00:00 GMTreviewseg4inverterhybrid inverteroff-gridreviewhttps://sunforgelab.com/blog/reviews/portable-power-stations-vs-diy/https://sunforgelab.com/blog/reviews/portable-power-stations-vs-diy/Portable power stations vs DIY solar — cost per kWh, use cases, expandability, and when each option makes sense for your situation.Sat, 04 Apr 2026 00:00:00 GMTreviewsportable power stationcomparisondiyecoflowbluettihttps://sunforgelab.com/blog/troubleshoot/battery-not-charging-solar/https://sunforgelab.com/blog/troubleshoot/battery-not-charging-solar/Systematic troubleshooting when your solar panels aren't charging your batteries — from sunlight basics to BMS lockouts, with multimeter readings at every step.Sat, 04 Apr 2026 00:00:00 GMTtroubleshootbatterychargingtroubleshootingcharge controllerdiagnosticshttps://sunforgelab.com/blog/troubleshoot/inverter-error-codes/https://sunforgelab.com/blog/troubleshoot/inverter-error-codes/Decode common error codes on EG4, Growatt, and Victron inverters — overload, over-temperature, battery faults, ground faults — with step-by-step fixes for each.Sat, 04 Apr 2026 00:00:00 GMTtroubleshootinvertererror codestroubleshootingeg4growatthttps://sunforgelab.com/blog/troubleshoot/solar-panels-low-output/https://sunforgelab.com/blog/troubleshoot/solar-panels-low-output/Step-by-step troubleshooting for underperforming solar panels — from obvious checks to advanced diagnostics with a multimeter.Sat, 04 Apr 2026 00:00:00 GMTtroubleshoottroubleshootingsolar panelslow outputdiagnosticsshading