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Fortress Power Envy True 12

Brand
Fortress Power
Model
850079800014
SKU / part number
850079800014[2]
Category
Inverters
chargedreviews.com/inverters/fortress-power-envy-true-12-850079800014

AC output

Continuous output12 kW[1, 8]Calculated
Peak output14 kW for 10 min; 16 kW for 5 min; 20 kW for 500 ms[8]
AC configuration120/240 V[8]
AC output voltage?
AC frequency?
Grid pass-through?
Maximum output per leg?

Battery

Battery voltage48 V[1, 8]
Battery voltage range?
Maximum charge current?
Maximum discharge current?
Battery-only output12 kW[1, 8]Calculated
Maximum grid charging?
Compatible batteries / BMS?

PV input

PV array limit (connected)?
PV input limit (converted)21 kW[1, 8]Calculated
Maximum PV voltage (Voc)600 V[1, 8]
MPPT voltage range?
MPPT trackers3[1, 8]
String inputs per MPPT?
PV current per MPPT?
PV short-circuit current?
PV startup voltage?

Efficiency and modes

Peak efficiency97.5 %[8]
CEC weighted efficiency?
Battery conversion efficiency?
Grid / off-grid modes?
Generator input?
Transfer time?
Idle consumption?
Parallel units?

Communication and environment

Communications?
Operating temperature?
Enclosure rating?
Operating noise?

Mechanical

Dimensions285 D × 520 W × 870 H mm[1, 8]
Weight58 kg / 127.87 lb[1, 8]

Installation (from the manual)

Not documented in the manual

Page 1 of 2 · Installation values · ? means nothing is recordedAggregated, often community-reported information, not official documentation. Do not rely on it for installation, purchase or compliance decisions; always confirm values with the manufacturer’s official documentation. Charged Reviews accepts no responsibility for errors.

Charged Reviews · Quick reference

Fortress Power Envy True 12 · 850079800014

Warranty

Warranty term10 years[1, 8]
Optional extension?
Coverage starts?
Coverage conditions?
Remedy?
Labor and shipping?
Transfer to another owner?
Registration?
Territory?

Certifications and listings

UL 1741ClaimedStatus unconfirmed[1]
UL 1741 SA?
UL 1741 SB?
IEEE 1547?
CA Rule 21?
UL 9540?
FCC Part 15?

Documents and sources

  1. Fortress Power Envy True 12 datasheetAffiliate link.Datasheet (distributor copy) · Revised Not stated · Checked Sep 8, 2026https://cdn.currentconnected.com/2026/03/09220531/Fortress-Power-Envy12-SpecSheet.pdf
  2. Current Connected product listingAffiliate link.Distributor product page · Revised Not stated · Checked Sep 8, 2026https://www.currentconnected.com/product/fortress-power-envy-true-12kw-48v-all-in-one-hybrid-inverter-21kw-solar-input-3-mppt-200a-ac-passthrough-built-in-rapid-shutdown-ip65-ul-1741
  3. Spec SheetAffiliate link.Datasheet (distributor copy) · Revised Not stated · Checked Sep 18, 2026https://cdn.currentconnected.com/2026/03/09220531/Fortress-Power-Envy12-SpecSheet.pdf
  4. ManualAffiliate link.Instruction manual (distributor copy) · Revised Not stated · Checked Sep 18, 2026https://cdn.currentconnected.com/2026/03/09220527/Fortress-Power-Envy12-Manual.pdf
  5. CertificationsAffiliate link.Certificate (distributor copy) · Revised Not stated · Checked Sep 18, 2026https://cdn.currentconnected.com/2026/03/09220533/Fortress-Power-Envy12-UL1741SB.pdf
  6. WarrantyAffiliate link.Warranty (distributor copy) · Revised Not stated · Checked Sep 18, 2026https://cdn.currentconnected.com/2026/03/09211147/Fortress-Power-Envy8-10-12-Warranty.pdf
  7. Envy True 12kW Inverter: Fortress PowerOfficial product page · Revised Not stated · Checked Sep 20, 2026https://www.fortresspower.com/products/envy-12kw/
  8. Fortress Power Envy True 12 kW datasheet (Envy12-110823)Official datasheet · Revised Not stated · Checked Sep 25, 2026https://www.fortresspower.com/download/893/envy-true-12/47834/fortress-power-envy-true-12-data-sheet-english.pdf