RUIXU Battery

RUiXU SUNON3.6 3.6kW 48V Off-Grid Solar Inverter Charger, 120V Pure Sine, 4500W MPPT, 80A Charger, Parallel Up to 6

RUiXU SUNON3.6 3.6kW 48V Off-Grid Solar Inverter Charger, 120V Pure Sine, 4500W MPPT, 80A Charger, Parallel Up to 6

⚑ 3.6kW 120V Pure Sine Inverter|β˜€οΈ 4,500W MPPT Solar Charger|πŸ”— Parallel Up to 6 Units|πŸ›‘οΈ 3-Year RUiXU Warranty
Price: $519.00
List Price:
Price: $519.00
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Real People – 833-664-7433
  • πŸ‡ΊπŸ‡ΈFree ShippingContiguous 48 states
  • πŸ›‘οΈ3-Year WarrantyRUiXU warranty
  • ⚑3,600 W Pure Sine120V, 7,200 VA peak
  • β˜€οΈ4,500 W Solar Input1 MPPT, 300V max
  • πŸ”—Stack Up to 6Split-phase or 3-phase
  • πŸ“žReal Human SupportSystem design help

RUiXU SUNON3.6 48V 3.6kW off-grid solar inverter: a 120V pure sine wave inverter with a built-in 4,500 W MPPT solar charger, an 80 A battery charger and 40 A grid or generator pass-through, all in one compact unit. It runs 120V loads up to 3,600 W with a 7,200 VA peak for motor starts, charges your 48V battery from solar, grid or a generator, and switches to battery in about 10 ms if shore or grid power drops. Add up to six units in parallel for 120/240V split-phase or three-phase power. It works with lithium, LiFePO4 and lead-acid batteries, and RUiXU includes a Wi-Fi dongle for monitoring. Backed by RUiXU's 3-year warranty.

3,600 WRated output, 120V
7,200 VAPeak output
4,500 WMax solar input
80 AMax battery charging

Ratings from RUiXU's spec sheet.

⚑ Is It Right for Your System?

Built for 48V off-grid and backup systems running 120V loads. Common uses:

  • Off-grid cabins
  • Sheds & workshops
  • Backup power
  • RVs & tiny homes
  • Small solar systems
πŸ“ Quick check before you order:
  • Your battery bank is 48V (40–60V). It works with LiFePO4, other lithium and lead-acid batteries.
  • Your loads are 120V and stay within 3,600 W. For 240V loads, pair two units or choose the SUNON7.2.
  • Your solar string stays under 300V open-circuit in cold weather, with an MPPT range of 90–260V and up to 27 A.
  • It's an off-grid inverter: it charges from and passes through grid or generator power (40 A), but it doesn't sell power back to the grid.
  • You'll install it indoors (IP20), with clearance for the fan.
  • Closed-loop battery communication: RUiXU's manual lists protocols for Pylontech, Pace, Voltronic and other brands, not RUiXU batteries by name. Ask us before you count on closed-loop with a specific battery.
  • Need UL? RUiXU's spec sheet lists UL 1741, but RUiXU doesn't post a certificate for this model. Check with your inspector first.
Not sure? Tell us your loads, battery and solar array, and we'll confirm the right inverter before you buy.

Why Choose the RUiXU SUNON3.6

⚑

3.6 kW Pure Sine Output

Clean 120V power for electronics, tools and motors up to 2 HP, with a 7,200 VA peak.

β˜€οΈ

Built-In MPPT Charger

One 4,500 W MPPT input (90–260V, 300V max) charges your battery at up to 80 A.

πŸ”Œ

Grid & Generator Ready

Charge at up to 40 A from grid or generator, with 40 A pass-through and about 10 ms transfer.

πŸ”—

Expand to 21.6 kW

Parallel up to six units for more power, 120/240V split-phase or three-phase.

πŸ”‹

Flexible Battery Support

Settings for LiFePO4 (14, 15 or 16 cells), other lithium, lead-acid and custom profiles.

πŸ“±

Monitoring

LCD display, RS485/CAN battery ports and a Wi-Fi dongle included, per RUiXU.

πŸ”— Parallel Options

Units Output
1 120V single-phase, 3.6 kW
2 120/240V split-phase, 7.2 kW
3 Three-phase, 10.8 kW
Up to 6 Split-phase or three-phase, up to 21.6 kW

From RUiXU's manual. Paralleled units need the same battery bank and RUiXU's parallel and current-sharing cables.

πŸ“¦ What's Included & What You'll Need

  • RUiXU SUNON3.6RUiXU SUNON3.6 inverter48V, 3.6 kW, 120V
  • Wi-Fi DongleIncluded, per RUiXU's product page
  • Parallel & Current-Sharing CablesIncluded, per RUiXU's manual
  • Mounting Hardware & LugsScrews, anchors, battery lugs and dust nets
Plan to add: Battery cables (RUiXU's manual calls for cable rated about 85 A) and a DC breaker, AC wiring and breakers, solar wiring and a PV disconnect. RUiXU's product page also lists a 200 cm battery communication cable. Ask us and we'll put together everything your install needs.

πŸ” Compare RUiXU Inverters

The three RUiXU inverters we carry, side by side.

Model Output Phase Solar input Grid-tie Enclosure
SUNON3.6 (this model) 3,600 W 120V (split-phase with 2) 4,500 W, 1 MPPT No (off-grid) IP20 indoor
SUNON7.2 7,200 W 120/240V split-phase 9,000 W, 2 MPPT No (off-grid) IP20 indoor
RX-12K 11,400 W 120/240V split-phase 17,100 W, 4 MPPT Yes (UL 1741 SB) NEMA 4X / IP65

From RUiXU's spec sheets. Not sure which fits? Call 833-664-7433.

πŸ”Œ Charging & Power Sources

β˜€οΈ

Solar Charging

Up to 80 A from solar, or 80 A combined from solar and grid.

πŸ”Œ

Grid or Generator

Up to 40 A of charging, 90–140 Vac input, generators from 40–70 Hz.

πŸ”‹

Battery Profiles

LiFePO4 14S/15S/16S, other lithium, lead-acid (sealed, gel, flooded) or user-defined.

⏱️

Fast Transfer

Switches between grid and battery in about 10 ms.

πŸ›‘οΈ 3-Year RUiXU Warranty

Years 1–3RUiXU warranty: repair, replacement or credit for defects
Support Through UsContact us first and we'll work the claim with RUiXU's tech support

Warranty claims are made through the place of purchase, which is us. RUiXU's spec sheet lists a 3-year warranty for this inverter. RUiXU's warranty doesn't cover improper installation or wiring, undersized cables, reverse polarity, extreme environments (heat, cold, water, impact), over- or under-charging, communication misuse, opening or tampering, misapplication, or normal end of life. Full terms on RUiXU's warranty page below.

πŸ“‹ Full Specifications

Output
Model RUiXU SUNON3.6
Rated Output 3,600 W / 3,600 VA, 120 Vac single-phase, pure sine
Peak Output 7,200 VA; 2 HP motor rating
Frequency 50/60 Hz (auto)
Efficiency 91% max (inverter); over 95% in AC mode
Transfer Time About 10 ms
Battery & Charging
Battery Voltage 48 V nominal, 40–60 Vdc
Battery Types LiFePO4 (14/15/16S), lithium, NCM, lead-acid, user-defined
Max Charge Current 80 A solar or hybrid; 40 A grid/generator
Solar
MPPT Inputs 1
Max PV Power 4,500 W
Max Open-Circuit Voltage 300 Vdc
MPPT Range 90–260 Vdc
Max PV Current 27 A
AC Input
Grid / Generator Input 90–140 Vac, 50/60 Hz (generator 40–70 Hz)
Pass-Through 40 A
General
Parallel Up to 6 units (21.6 kW), split-phase or three-phase
Communication RS485, CAN, USB, dry contact; Wi-Fi dongle
Display LCD with 3 LEDs and 4 buttons
Protection IP20, indoor only
Operating Temperature -10 to 55Β°C (derates above 45Β°C)
Dimensions 460 Γ— 280 Γ— 110 mm (18.1 Γ— 11.0 Γ— 4.3 in)
Weight 7.8 kg (17.2 lb)
Certifications FCC Part 15 Class B; UL 1741 listed on RUiXU's spec sheet (no certificate posted)
Warranty 3 years (per RUiXU spec sheet)

πŸ“„ Manuals & Downloads

🌐RUiXU Product PageSUNON3.6 off-grid inverterRUIXU β†—πŸ“„Spec SheetSUNON3.6 (PDF)PDF β†—πŸ“˜User ManualSUNON3.6, V1.2 (PDF)PDF β†—πŸ“œRUiXU Warranty PageFull warranty termsRUIXU β†—

Specs from RUiXU's spec sheet and manual. Where they disagree, we list the more conservative figure. Documents above link straight to RUiXU.

❓ Common Questions

Can it power 240V loads?
Not on its own. One SUNON3.6 outputs 120V. Pair two units for 120/240V split-phase, or choose the SUNON7.2, which is split-phase in a single unit.
Can it sell power back to the grid?
No. It's an off-grid inverter. It can charge from and pass through grid or generator power, but it doesn't export to the grid.
Will it talk to my lithium battery?
RUiXU's manual lists closed-loop protocols for Pylontech, Pace, Gotion, Voltronic and other brands. RUiXU batteries aren't named, so ask us before you plan on closed-loop. It can also run on voltage-based settings.
How big a solar array can I connect?
Up to 4,500 W on one MPPT, with an open-circuit voltage under 300V (cold-corrected) and up to 27 A.
Is it UL listed?
RUiXU's spec sheet lists UL 1741, but RUiXU doesn't post a certificate for the SUNON3.6. Check with your inspector before you buy.
How does the warranty work?
RUiXU's spec sheet lists 3 years. Warranty claims go through the place of purchase, so contact us and we'll handle it with RUiXU.

Questions About Your Setup? Ask Us First.

Tell us your loads, battery and solar array, and we'll confirm the right RUiXU inverter before you order.

πŸ“ž Call 833-664-7433πŸ“§ Email Us