Find replacement for LONGi LGi7-54CHVD-315M

315 W HPBC solar panel with 108 cells. Voc 39.59 V · Isc 9.75 A · TcVoc -0.2%/°C.

Original Panel

Select the panel you want to replace

Panel not in the catalogue?

2 of the 4,444 panels in the catalogue can replace LONGi LGi7-54CHVD-315M. Before you buy, check your pick in the string calculator with your inverter.

CloseNoticeableLarge differenceTap or click a difference to see what it means for your string.

Good match

Small differences within tolerance — safe once verified in the calculator with your inverter.

Match 83 % · 1 model

LONGi LGi7-54CHVD-320M — Open the panel page
320 WHPBCsame series
83 %

Acceptable

Noticeable differences — the string voltage and current need a careful check.

Match 66 % · 1 model

LONGi LGi7-54CHVD-325M — Open the panel page
325 WHPBCsame series
66 %

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

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Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.

How the Algorithm Works

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Original Panel Specs

Voc

39.59 V

Vmpp

34.05 V

Isc

9.75 A

Impp

9.25 A

TcVoc

-0.2 %/°C

TcPmax

-0.26 %/°C

Pmax

315 W

Cells

108

Bifaciality

70%

Length

1800 mm

Width

1134 mm

Thickness

30 mm

Weight

23.5 kg

The LONGi LGi7-54CHVD-315M is a 315 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.

Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.

Other models in this series

Model	Power	Voc	Isc
LGi7-54CHVD-320M	320 W	39.95 V	9.82 A
LGi7-54CHVD-325M	325 W	40.31 V	9.88 A
LGi7-54CHVD-365M	365 W	39.66 V	11.28 A
LGi7-54CHVD-370M	370 W	40.02 V	11.33 A
LGi7-54CHVD-375M	375 W	40.38 V	11.38 A
LGi7-54CHVD-415M	415 W	39.72 V	12.8 A
LGi7-54CHVD-420M	420 W	40.08 V	12.84 A
LGi7-54CHVD-425M	425 W	40.44 V	12.88 A
LGi7-54CHVD-430M	430 W	39.74 V	13.26 A
LGi7-54CHVD-435M	435 W	40.1 V	13.29 A
LGi7-54CHVD-440M	440 W	40.46 V	13.33 A

Frequently Asked Questions

What specs must match when replacing the LONGi LGi7-54CHVD-315M?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 39.59 V (within ±5%), and temperature coefficient TcVoc close to -0.2%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.

Can I use a higher wattage replacement for the LONGi LGi7-54CHVD-315M?

A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.

What happens if the replacement panel has different voltage specs?

If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original LONGi LGi7-54CHVD-315M.

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