Q1: What can the SOLIX F3800 / F3800 Plus HPP system do for my home?

The SOLIX F3800 series is built to give you peace of mind and more control over your energy use. It has two main jobs:

Save on energy bills

Charge your system with cheaper off-peak electricity or grid-tied solar panels.
Use stored energy during expensive peak hours.

Result: Lower monthly electricity costs.

Keep your home running during blackouts

When the grid goes down, the system automatically switches to power the loads on the sub-panel.
It powers your essential circuits (up to 25A with one unit, or 50A with two).

That means your fridge, lights, Wi-Fi, and other critical devices stay on.

Important: Grid-tied rooftop solar panels shut off during outages for safety. This means they can’t recharge the F3800 through the Home Power Panel until the grid is restored.

Q2: What kind of backup power system is right for my home?

Every household has different energy needs. Here’s a simple guide to help:

Recommended setup

Start with one or two F3800 Plus units and the Home Power Panel (HPP).
Add expansion batteries or solar panels if you use more electricity daily.

How it works for you

On normal days: Store cheap off-peak or solar energy, then use it when rates are high.
During outages: The system automatically powers your sub-panel (25A with one unit, 50A with two).

Key things to consider

Daily usage 5–20kWh: Add Expansion Batteries for longer runtime.
During an outage: Prioritize essentials like fridge, Wi-Fi, and lights to make power last.
Extended outages: A 240V generator can connect to the HPP. It not only keeps your sub-panel powered, but any extra energy also recharges the F3800 Plus.

To help us recommend the best setup, you can contact our support and tell us:

How much energy do you typically use per day or week (in kWh or Wh)?
How often do outages happen in your area, and how long do they last?

We recommend purchasing varying quantities of F3800 and BP3800 units based on your household's actual daily electricity consumption. For example, with a daily usage of 10kW, we recommend deploying two F3800 and two BP3800 units to the Home Power Panel.

Q3: What setup works best for an off-grid cabin or RV?

The F3800 series is flexible enough for both cabins and RVs.

Options:

Single unit: 3,840Wh capacity, 6,000W output (120V/25A or 240V/25A). Supports up to 6 expansion batteries.
Two units + Double Power Hub: 12,000W output (120V/50A or 240V/50A). Supports up to 12 expansion batteries.

For off-grid cabins:

One F3800/F3800 Plus or two F3800/F3800 Plus units with Double Power Hub + Backup Kit (50A manual transfer switch).
During an outage, flip the switch to run essentials (≤50A).
Recharge via wall outlet when drained.
Add solar panels and expansion batteries for longer autonomy.
For very long outages, keep a 240V generator as backup.

For RVs:

One F3800/F3800 Plus or two F3800/F3800 Plus units with Double Power Hub.
Expand with solar panels or batteries for boondocking or remote trips.
For extended power needs, consider a 240V generator as backup.

To refine your setup, you can contact our support and share:

Your typical daily or weekly energy use.
Which high-power devices (like AC, fridge, or heater) you want to run.

Q4: What are the main differences between the F3800 and F3800 Plus?

Both units share the same 3,840Wh capacity and 6,000W output, but they differ in flexibility:

Solar input

F3800: 11–60V, max 1,200W per port.
F3800 Plus: 11–165V, max 1,600W per port (supports wider solar setups).

Generator charging

F3800: Can’t recharge via HPP port with a generator.
F3800 Plus: Can be recharged through HPP port on the F3800 Plus by 240V/120V generators - no sinewave requirement.

EV charging ports

F3800: L14-30R + 14-50R ports.
F3800 Plus: Only L14-30R port.

TT-30R 120V output

F3800: No.
F3800 Plus: Yes (great for RVs).

14-50R 240V output

F3800: Yes.
F3800 Plus: No.

HPP + generator integration

F3800: During an extended outage, F3800 and a 240V generator can not be connected to HPP at the same time.
F3800 Plus: During an extended outage, F3800 Plus and a 240V generator can be connected to HPP at the same time — keep your sub-panel powered

In short: