Continuous output3 kWBattery voltage48 VSolar input4.5 kWMPPT trackers1AC output208-220-230-240VAC (optional)Size37.13 L*W: 300 × H: 550 × D: 225 mmWeight27 kg / 59.52 lb
Not documented yet: Warranty.
Growatt
Products
Inverters
Continuous output3 kWBattery voltage24 V DCSolar input2 kWMPPT trackersNot statedMPPT range30 to 115 VAC output120 VSize20.7 L*W: 350 × H: 455 × D: 130 mmWeight11.5 kg / 25.35 lb
Not documented yet: Warranty.
DetailsView at Signature SolarAffiliate link · Signature Solar
Continuous output3 kWBattery voltage48 V DCSolar input4.5 kWMPPT trackersNot statedMPPT range60 to 115 VAC output120 VSize20.7 L*W: 350 × H: 455 × D: 130 mmWeight11.5 kg / 25.35 lb
Not documented yet: Warranty.
DetailsView at Signature SolarAffiliate link · Signature Solar
Continuous output3 kWBattery only3 kWBattery voltage48 VSolar input4 kWMPPT trackers1MPPT range120 to 250 VAC output100Vac/110Vac/120Vac @ 50/60Hz (battery mode)Size21.61 L*W: 330 × H: 485 × D: 135 mmWeight11.5 kg / 25.35 lb
Not documented yet: Warranty.
DetailsView at Signature SolarAffiliate link · Signature Solar
Continuous output3.5 kWBattery only3.5 kWBattery voltage48 VSolar input4.5 kWMPPT trackers1MPPT range120 to 430 VAC output230VAC ± 5% @ 50/60Hz (battery mode)Size21.61 L*W: 330 × H: 485 × D: 135 mmWeight11.5 kg / 25.35 lb
Not documented yet: Warranty.
Continuous output4 kWBattery voltage48 VSolar input5 kWMPPT trackers1AC output120/240Vac split phase outputSize42.38 L*W: 360 × H: 540 × D: 218 mmWeight38 kg / 83.78 lb
Not documented yet: Warranty.
Continuous output4 kWBattery voltage48 VSolar input5 kWMPPT trackers1MPPT range60 to 245 VAC output120/240Vac Split Phase outputSize42.38 L*W: 360 × H: 540 × D: 218 mmWeight42 kg / 92.59 lb
Not documented yet: Warranty.
Continuous output5 kWBattery only5 kWBattery voltage48 VSolar input6 kWMPPT trackers1MPPT range120 to 430 VAC output230VAC ± 5% @ 50/60Hz (battery mode)Size21.61 L*W: 330 × H: 485 × D: 135 mmWeight12 kg / 26.46 lb
Not documented yet: Warranty.
Continuous output5 kWBattery only5 kWBattery voltage48 VSolar input6 kWMPPT trackers1MPPT range120 to 430 VAC output230VAC ± 5% @ 50/60Hz (battery mode)Warranty2 yearsSize21.61 L*W: 330 × H: 485 × D: 135 mmWeight12 kg / 26.46 lb
DetailsView at ShopSolarAffiliate link · ShopSolar
Continuous output5 kWBattery voltage48 VSolar input5 kWMPPT trackers1AC output120/240Vac split phase outputSize42.38 L*W: 360 × H: 540 × D: 218 mmWeight41 kg / 90.39 lb
Not documented yet: Warranty.
Continuous output5 kWBattery voltage48 VSolar input5 kWMPPT trackers1MPPT range60 to 245 VAC output120/240Vac Split Phase outputSize42.38 L*W: 360 × H: 540 × D: 218 mmWeight47 kg / 103.62 lb
Not documented yet: Warranty.
Continuous output6 kWBattery voltage48 VSolar input5 kWMPPT trackers1MPPT range60 to 145 VAC output120/240Vac Split Phase outputSize42.38 L*W: 360 × H: 540 × D: 218 mmWeight52 kg / 114.64 lb
Not documented yet: Warranty.
Continuous output6 kWBattery voltage48 VSolar input4.5 kWMPPT trackers1AC output104-110-115-120/208-220-230-240VAC (optional), battery modeSize58.6 L*W: 365 × H: 650 × D: 247 mmWeight38.5 kg / 84.88 lb
Not documented yet: Warranty.
Continuous output6 kWBattery voltage48 VSolar input5 kWMPPT trackers1MPPT range60 to 245 VAC output120/240Vac Split Phase outputSize42.38 L*W: 360 × H: 540 × D: 218 mmWeight52 kg / 114.64 lb
Not documented yet: Warranty.
History and sources
Certificate & document history
Certificate & document history
CSIP: claimed
Growatt WIT 28K-AU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-AU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-AU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentSA17-SA18: claimed
Growatt WIT 28K-AU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-AU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-AU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentUL1998:2018: claimed
Growatt WIT 28K-AU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-AU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-AU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentCEC (printed by the maker; issuer not named): claimed
Growatt WIT 28K-AU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-AU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-AU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass. The maker prints only the letters "CEC" and names no issuer or program; it is not a California Energy Commission equipment list entry (those rows cite the CEC list itself).
Official datasheet: Growatt datasheet Checked · Earlier documentFCC Part 15: claimed
Growatt WIT 28K-AU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-AU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-AU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentCSA C22.2.107.1: claimed
Growatt WIT 28K-AU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-AU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-AU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentUL1741:2021: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentUL1741 SA/SB:2020: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentIEEE1547:2018: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentIEEE1547.1:2020: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentHECO Rule14: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentE-5000: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentCSIP: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentSA17-SA18: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentUL1998:2018: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentCEC (printed by the maker; issuer not named): claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass. The maker prints only the letters "CEC" and names no issuer or program; it is not a California Energy Commission equipment list entry (those rows cite the CEC list itself).
Official datasheet: Growatt datasheet Checked · Earlier documentFCC Part 15: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentCSA C22.2.107.1: claimed
Growatt WIT 28K-H-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-H-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-H-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentUL1741:2021: claimed
Growatt WIT 28K-HU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-HU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-HU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentUL1741 SA/SB:2020: claimed
Growatt WIT 28K-HU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-HU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-HU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentIEEE1547:2018: claimed
Growatt WIT 28K-HU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-HU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-HU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentIEEE1547.1:2020: claimed
Growatt WIT 28K-HU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-HU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-HU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentHECO Rule14: claimed
Growatt WIT 28K-HU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-HU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-HU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentE-5000: claimed
Growatt WIT 28K-HU-USProduct / system scope unresolved. Growatt prints "UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1" in the Growatt WIT 28-55K-HU-US L2 datasheet (EN 202405, marked Preliminary Version), which names WIT 28K-HU-US L2, captured on September 25, 2026. This records the standard as Growatt prints it. It is a manufacturer statement only: no issuer listing, certificate number, edition, scope or validity was checked in this pass.
Official datasheet: Growatt datasheet Checked · Earlier documentManufacturer history
Manufacturer history
No manufacturer history recorded yet.
Manufacturer & sources
Manufacturer & sources
This manufacturer is listed as Growatt. Manufacturing entities, factories, cell origin and model-specific ownership relationships have not been audited.
Product certificates and company management certificates are tracked separately. No company management certificates have been reviewed for this manufacturer yet.
Recalls / legal notices
No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice
Owner reviews
I built this system for my Pool equipment and BBQ plugs. Its a small 4kw system that has a battery. Have an electric hot tub that the battery keeps running over night. It pretty much covers the equipment use year round. Since rate the store is currently not working when the store is not listed. I did purchase the inverter from Portable Sun LLC
andyps Verified owner · Oct 16, 2026
Full review / responsesWe purchased this power station to act as a temporary power situation for our RV travels around-the-world. We chose this one because of the Prime day sale and because it was the cheapest option that included a TT-30 port. It has been extremely handy for us and with all of our devices plugged in it lasts a REALLY long time. We are also able to charge it up extremely quickly with our gas / propane generator (in a matter of 30 minutes or so from 40% to full). I would definitely recommend it (so far) to anyone and everyone looking for a powerful, but cheaper and lighter weight power station.
oberning Verified owner · Oct 14, 2026
Full review / responsesReview policy · Verified reviews carry 19× the weight. Responses and helpful votes do not change stars.
Manage this page
Representatives of Growatt can use a manufacturer account to:
- Reply to owner reviewsReplies show your name and the manufacturer.
- Upload certificates and documentsData sheets, manuals, certificates and bulletins for your products.
- Correct specs and add productsSubmit specification corrections and missing models.
Staff review every change. Manufacturer accounts cannot edit or remove reviews or change scores.
1 Product price · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.