Faraday Energy Glass 225Wp PERC S3

Practical choice for many motorhomes

• 225Wp is a great “first step” for many existing motorhomes: noticeably more charging without immediately needing a completely new system.
• Pairs well with a compact MPPT such as the 100/20 (see set below).

Modern cell technology (PERC + 13 busbars)

• Monocrystalline PERC cells with high efficiency (up to 22.9%).
• 13 busbars per cell for efficient current distribution.

Robust for motorhome use

• Sturdy aluminum frame and tempered glass.
• Weather-resistant junction box with bypass diodes (for partial shade).
• UV- and weather-resistant cables with MC4 connectors (cable length 80 cm).

Highlighted: 2 “islands” (parallel) – noticeably better in partial shade

This Faraday panel is made up of two parallel-connected sections (“islands”). This means that one part of the panel continues to perform better when the other part is (partially) in the shade — a situation that often occurs when camping (skylight, lamppost, tree branches).

• Practical advantage: less “collapse” in yield when one part of the panel is shaded.
• Extra relevant for motorhomes: shade is almost never “all or nothing,” but often local.

Shade is and always will be detrimental; this design is especially helpful with partial shade.

Warranty

• 5-year manufacturer's warranty.
• 10-year power warranty > 90%.

1) Charge controller (MPPT)

• Faraday SmartSolar MPPT 100/20 — smart choice, good value for money.
• Victron SmartSolar MPPT 100/20 — Victron ecosystem, VictronConnect app.

For one 225Wp panel, a 100/20 is a logical match for many 12V motorhomes. Want to expand with extra panels later? Send us your plans, and we can make sure you don't have to buy again later.

2) Solar cable set (panel → MPPT)

• 6mm² solar cable set 2 × 5m with connectors

6mm² is relatively thick: less voltage drop and often the safer choice for longer cable runs.

3) Battery cable set + fuse (MPPT → leisure battery)

• 6mm² battery cable set 2 × 1m + 25A fuse (fuse on the battery side)

This is the “installation wire” to connect the charge controller neatly and safely to the service/leisure battery.

4) Roof cable entry (cables going inside)

• White plastic double roof cable entry (most popular choice)
• Other options: all cable entries

5) Cable management on the roof

• UV-/weather-resistant adhesive cable mounts & zip ties (10x)

Ribbed roofs (roof with ribs/grooves): usually Z-profiles

• Aluminum Z-profiles (set of 6) — simple, strong and practical for ribbed roofs.

Flat roofs (semi-/integral): corner brackets or spoilers

• Corner brackets: white or black
• Spoilers: handy for flat roofs; note that standard spoilers are often 68 cm (panel width 70.5 cm → a small overhang is normal).

Sealant & primers

For plastic corner brackets/spoilers, we recommend construction sealant + the corresponding primers. There are often two primers: one for metal (roof) and one for plastic (mounting).

• View our range: glue, primer and sealant

If in doubt: combine with mechanical mounting (screws) and seal neatly with sealant.

Does this 225Wp panel fit an MPPT 100/20?

In many 12V motorhomes, that is a good combination. The main difference is often in your expansion plan: if you want to add extra panels later, it is smart to take that into account now when making your choice.

I want to install 2 panels: series or parallel? (and 12V/24V)

For these Faraday panels, we usually recommend parallel connection for two panels (not in series). This pairs well with 12V systems and makes use of the advantage of the two “islands” in partial shade.

• 12V charging: 1–2 panels in parallel is often the most logical choice in practice.
• 24V battery charging: these panels are less ideal; in that case, preferably choose a panel type that is more focused on series configurations (one string/“island”).
• Important (safety): combine our 200Wp and 225Wp panels up to a maximum of 2 panels in parallel to stay within the maximum current of the MC4 connector.

Unsure about your situation (12V/24V, MPPT choice, expanding)? Send us your plan, and we will quickly check if everything remains electrically neat and safe.

Is 5 meters of solar cable enough?

In many motorhomes, yes, but this varies depending on the cable route (roof → cable entry → cabinet/garage/seat). If you are unsure: roughly measure the route or send us a photo/plan.

Why do you recommend 6mm² cable?

Thicker cable means less voltage drop and less heat at the same current. This is especially helpful for longer cable runs.