270 W ABC solar panel with 64 cells. Voc 23.67 V · Isc 14.58 A · TcVoc -0.22%/°C.
Select the panel you want to replace
Panel not in the catalogue?
6 of the 4,444 panels in the catalogue can replace Heckert Solar ZEUS 1.2 64-270 FullBlack. 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.
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 84 % · 1 model
Noticeable differences — the string voltage and current need a careful check.
Match 67 % · 1 model
Large differences — a real risk of a mismatched string; prefer a closer panel.
Match 29–59 % · 4 models
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
Learn how panels are scored and matched
Voc
23.67 V
Vmpp
20.23 V
Isc
14.58 A
Impp
13.35 A
TcVoc
-0.22 %/°C
TcPmax
-0.26 %/°C
Pmax
270 W
Cells
64
Bifaciality
80%
Length
1560 mm
Width
770 mm
Thickness
35 mm
Weight
14.3 kg
The Heckert Solar ZEUS 1.2 64-270 FullBlack is a 270 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.
| Model | Power | Voc | Isc |
|---|---|---|---|
| ZEUS 1.2 64-275 FullBlack | 275 W | 23.89 V | 14.65 A |
| ZEUS 1.2 64-280 FullBlack | 280 W | 24.11 V | 14.72 A |
The most critical specs to match are: cell count (must be exactly 64), Voc close to 23.67 V (within ±5%), and temperature coefficient TcVoc close to -0.22%/°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.
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.
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 Heckert Solar ZEUS 1.2 64-270 FullBlack.