Selected-circuit backup

Anker F3800 Plus entry plan.

A cleaner home-backup entry than the Pecron subpanel path, but not cheaper. At roughly $4k, it is about 3.3x the $1,199 Pecron base-unit price while still landing around 12-15% of the full EG4 project cost.

Battery

3.84 kWh

Same base battery size class as the Pecron E3800LFP.

Output

6,000 W

120/240V output with L14-30 support for critical-circuit backup.

Solar input

3,200 W

Two inputs, up to 1,600W each, 11-165V and 17A max.

Cycle rating

3,000+

LFP spec-sheet claim, and the weak point in this set: below the Pecron E3800LFP's 3,500+ cycles to 80%.

Recommendation

This is the easy middle path, not the cheap path.

The Anker kit makes sense if the goal is critical-circuit backup with an app, 240V output, a supported home panel path, and less custom electrical design. It does not beat Pecron on price. Use the Anker option only if the cleaner home-integration path is worth paying several times more than the Pecron base unit.

Path Current planning cost Best reason Main limit
Pecron E3800LFP ~$1,199 before panels/subpanel Cheapest useful battery box. Less integrated for house circuits.
Anker F3800 Plus kit Your sale target: ~$4k. Current listed Smart Home Power Kit: ~$6,398. Clean critical-circuit backup ecosystem. Small battery for the price.
EG4 FlexBOSS/GridBOSS ~$30k+ modeled project Real solar-first home energy system. High entry cost and permitting scope.

Pricing snapshot

Separate the kit price from the HVAC battery math.

Hardware prices move, so this table keeps the assumptions visible. The Anker collection page currently shows higher bundle prices than the rough $4k sale target.

Line item Capacity / role Planning price Notes
F3800 Plus + Smart Home Power Kit 3.84 kWh, 6kW output, critical-circuit path Sale target: ~$4,000; listed kit: ~$6,398 This is the minimum Anker home-backup configuration worth comparing.
One BP3800 expansion battery +3.84 kWh ~$2,499 implied by Anker bundle delta Doubles energy capacity, but still only gives a few HVAC hours.
F3800 Plus + expansion + Smart Home Power Kit 7.68 kWh total ~$8,897 listed Cleaner critical-circuit backup, but poor value if HVAC runtime is the goal.
Mounted solar panels 1.8-3.2 kW practical starter range Not included Add panels, mounts, wire, permit decisions, and electrician time separately.

Cycle life

Anker's battery is the weakest cycler in this set.

The F3800 Plus tech-spec sheet rates the LFP cells at 3,000+ cycles. That is a real but modest step below the Pecron E3800LFP's 3,500+ cycles to 80%. It only matters if the stack is cycled almost every day — the daily-solar use case. For occasional outage backup, both are far beyond NMC/NCA chemistry and the difference is noise.

Cycle rating comparison

Unit Cycle claim Warranty Daily-cycle read
Anker F3800 Plus 3,000+ (LFP) 5-year ~8 years of daily cycling before the cells are used up.
Pecron E3800LFP 3,500+ to 80% 3+2-year ~9.5 years of daily cycling to 80% capacity.

Anker cycle spec from the F3800 Plus tech-spec sheet; Pecron cycle claim from the E3800LFP product page. Both are LiFePO4. Anker's 3,000+ is a published floor, not an exact test result.

Mounting angle

If we add fixed solar, keep the same north-south logic.

The Anker path is about ease of use, not custom engineering, but mounted panels still benefit from the same seasonal angles. Use the same shared fixed-mount baseline as the other rigid-panel pages: IntegraRack IR-30 BallastRack at 30° plus IR EarthScrews where ground mounting makes sense.

Season Recommended tilt Why
Summer15°-25°Sun is high, so flatter panels catch more light.
Winter55°-60°Sun is low, so steeper panels face it better.
Year-round fixed30°-40°A practical compromise if we do not want seasonal adjustments.
Fixed-angle option: IntegraRack IR-30 BallastRack. Mounting kit: IR EarthScrews 10-pack. At 2 anchors per frame, the 10-pack should cover about 5 frames.

HVAC runtime model

The recent HVAC data makes the battery requirement clear.

The Emporia export showed full-day HVAC usage around 34.9-45.1 kWh, with observed hourly peaks under 3kW. Anker output can cover that observed draw, but the battery stack needed for 20 hours is large.

Anker battery stack Nominal capacity Usable estimate Runtime at 1.45 kW Runtime at 1.88 kW Approx cost before panels
1 pack: F3800 Plus only 3.84 kWh ~3.5 kWh ~2.4 hours ~1.8 hours ~$4,000 sale target or ~$6,398 listed kit
2 packs: +1 BP3800 7.68 kWh ~6.9 kWh ~4.8 hours ~3.7 hours ~$8,897 listed bundle
4 packs: F3800 + 3 batteries 15.36 kWh ~13.8 kWh ~9.5 hours ~7.3 hours ~$13,900 class from listed kit + batteries
7 packs: F3800 + 6 batteries 26.88 kWh ~24.2 kWh ~16.7 hours ~12.9 hours ~$21,400 class from listed kit + batteries

20-hour answer

Battery-only, one Anker stack does not cleanly hit 20 hours for the recent full-day HVAC loads. To reach 20 hours at the observed 1.45-1.88 kW average draw, the system needs about 29-38 kWh usable. Maxed Anker expansion is still short without solar contribution. With strong daytime solar, the maxed stack may become workable for mild/moderate HVAC days, but this is no longer a cheap entry system.

Circuit fit

What I would back up

Fridge, internet, selected lights

The best match. High comfort, modest power draw.

One managed kitchen outlet

Fine for the Jura if you understand it is a short high-watt load.

Mitsubishi HVAC

Possible in narrow light-load cases, but not the reason to buy this. The battery is too small for meaningful HVAC backup.

Mounted solar

Use rigid panels if you add solar.

Anker supports its own 440W rigid panels and up to eight panels on the page. For this house, start smaller: four 400-550W rigid panels is enough to learn whether the system earns its space.

Array Nameplate Use
2 panels ~880W-1.1kW Minimum fixed solar test.
4 panels ~1.76-2.2kW Recommended starter array.
8 panels ~3.5kW class Approaches max input; revisit permitting, mounting, and EG4 comparison.

Per-circuit fit

What the Anker actually runs.

Anker is the cleanest integrated selected-circuit option in this set. The output side is strong, but the base 3.84 kWh battery still means the best fit is critical circuits and short managed loads, not whole-home HVAC runtime.

Circuit kWh/day Peak kW Anker? Readout
Kitchen outlets / fridge2.141.66YesGood critical-circuit candidate.
Internet / router / phones0.300.05YesExcellent fit for the Smart Home Power Kit path.
LED lighting0.500.10YesGood comfort value and easy to shed.
Radon fan2.260.49PartialWorks electrically, but it dominates the base battery budget.
Well pump0.590.28MaybeUse only through an electrician-designed transfer path.
Light critical subtotal~3.0-5.8~2.6YesGood selected-circuit fit if expectations stay narrow.
Water heater10.104.64NoToo much daily energy for the base stack.
Heat pump23.357.63NoPossible only with a much larger battery stack and solar contribution.

Emporia per-circuit diagnostics

Single kit versus double kit.

Anker is the cleanest integrated backup path here, so the useful question is how much solar support it gets. One kit keeps the system easy; two kits make the critical-load backup much more capable.

Build Solar / day Critical fit Readout
1 kit / 2 panels ~1.8-3.2 kWh/day Good for light critical circuits and app-managed backup. Easy entry.
2 kits / 4 panels ~3.6-6.4 kWh/day Much better at holding a critical-circuit load center through the day. Better if we want real daytime support.

Bottom line

Anker is the easiest home-backup entry, Pecron is the cheapest backup energy, and EG4 is the serious solar architecture. At $4k, Anker is over 3x the $1,199 Pecron base-unit price. The argument for Anker is not value per kWh; it is a cleaner critical-circuit ecosystem at a much lower entry cost than EG4.