Panel compatibility

Screen panel specs against a power station input range.

Enter combined panel or array Vmp, Voc, Imp, watts, and the station's listed input limits. This screen checks Imp, not short-circuit current (Isc).

Quick resultRun estimate

A useful screen checks minimum Vmp plus cold-adjusted Voc, current, and watts.

Inputs

Planning assumptions

Panel or array wattsCombined rated watts; this should be within about 5% of Vmp x Imp (or within 1W for small panels).Panel or array VmpCombined operating voltage at maximum power.Panel or array VocCombined nameplate open-circuit voltage before cold allowance.Panel or array ImpCombined operating current at maximum power. Isc is a separate manufacturer check and is not screened here.Cold-weather Voc allowance percentScreening increase applied to Voc; use temperature-coefficient math when available.Station minimum input voltsLower end of the listed solar or MPPT input range.Station maximum input voltsPublished maximum input voltage or Voc limit.Station maximum input ampsPublished solar input-current limit for the same port.Station maximum input wattsPublished solar input-watt limit for the same port.

Preset sources: EcoFlow RIVER 2, EcoFlow RIVER 2 Pro, BLUETTI AC70, EcoFlow DELTA 2, BLUETTI AC180. Values checked July 16, 2026; verify the current manual for your exact hardware revision.

Use this as a planning estimate

Small solar and backup-power estimates depend on real device draw, temperature, battery age, sun, shade, and product limits. Use the result to narrow a shopping range, then verify exact specs before buying.

Main estimateNo run yetChange an input to update the estimate.

Screening result: --
Panel watts vs Vmp x Imp: --
Cold-adjusted Voc: --
Vmp vs input minimum: --
Operating current: --
Rated watts: --

Before buying

Use combined array specs for the exact series or parallel configuration being considered.
Confirm panel watts approximately equal Vmp x Imp; a large difference usually means mixed or mistyped specs.
Verify cold-adjusted Voc remains below the station's maximum input voltage.
If the station publishes a short-circuit-current limit, compare array Isc separately; this calculator screens Imp only.
Check connector type, polarity, adapters, and manufacturer compatibility guidance separately.
Treat any result outside a listed limit as unresolved until the manufacturer confirms an allowed configuration.

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Planning notes

What this calculator is checking

Screen only

A pass is not full compatibility approval

This calculator compares a short list of published electrical limits. It cannot validate connectors, polarity, cable ratings, controller behavior, or every manufacturer restriction.

Power specs

Rated watts should agree with Vmp x Imp

The screen allows the larger of 5% or 1W for nameplate rounding. A larger mismatch is treated as inconsistent panel data.

Current

Imp and Isc are not interchangeable

The station input-current check uses operating current (Imp). Any published short-circuit-current (Isc) limit still needs a separate array check.

Cold Voc

Panel voltage rises in cold conditions

The allowance is a screening input, not a universal correction. Use the panel's voltage temperature coefficient and expected low temperature when those values are available.

Input range

Vmp must also clear the minimum

A panel can stay below maximum Voc and still charge poorly or not start if operating voltage is below the station's listed input or MPPT range.

Solar recharge time calculator

Check whether a panel can refill the battery within your usable sun window.

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