How do I wire multiple panels together?
Documented on the Part 2 of the solar mount project, 1/2 way done build
Published July 22, 2026
Panels are typically combined in series or parallel depending on voltage and the charge controller specs.
Full Answer
Panels are typically combined in series or parallel depending on voltage and the charge controller specs. Use MC4 connectors and a combiner box with proper fusing, then route the combined output to an MPPT charge controller matched to your battery system.
Documented In This Build
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Related Parts
100W solar panels (quantity: 2)
$400
Aluminum mounting rails
$80
L-feet / Z-brackets mounting kit
$50
Rivnuts / rivet-nut inserts (kit)
$20
Stainless carriage bolts / nuts / washers hardware
$30
Butyl tape / automotive roof sealant (Sikaflex or similar)
$15
MC4 connector cable kit
$40
MPPT charge controller (30–40A typical)
$200
Combiner box / inline fuse block
$50
Grounding lug & grounding wire
$10
Related Tools
Multimeter
Socket set & ratchet
Tape measure & marking tools
Cordless drill / driverDeWalt (example)
Rivet nut / rivnut installation tool
Step drill bit / metal drill bit set
Ladder / roof safety gear
Caulking gun
