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640 VA | Dual MPPT | NEMA 6 | 10-Year Warranty
Anker SOLIX MI80S Microinverter: 640 VA of Module-Level Conversion at Under 60 VDC
A microinverter converts DC to AC at each panel rather than sending high-voltage DC down to a single string inverter. The practical result is that one shaded or underperforming panel no longer drags the rest of the array down with it, and one failure does not take the whole system offline. The MI80S handles two modules on independent MPPTs and delivers up to 640 VA of continuous AC output at 240 V.
The safety argument is the one installers care about. String inverters run at 300 to 1,000 VDC on the roof. The MI80S operates under 60 VDC, which changes the shock and arc-fault picture considerably. Add a die-cast aluminium housing rated NEMA 6 that holds full output from -40 F to 149 F, and you have a unit designed to sit on a roof for a decade without attention.
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Why Module-Level Conversion
Two Independent MPPTs
Each input tracks its own maximum power point, so panels at different tilts, orientations or string lengths all run at their own optimum. A string inverter has one MPPT for everything.
Under 60 VDC on the Roof
Between 300 and 1,000 VDC lower than a string inverter. That is the difference between a rooftop DC circuit that is genuinely hazardous and one that is not.
One Failure Is One Panel
If a microinverter fails you lose that pair of modules, not the array. With a string inverter, a single failure takes the entire system down until someone shows up.
Full Output From -40 F to 149 F
Powder-coated die-cast aluminium dissipates heat far better than the plastic housings common at this price, which is what allows rated output across the whole temperature range rather than derating in summer.
Six Units Per 12 AWG Branch
Up to six MI80S units on a single 20 A branch circuit, and the platform scales to PV systems up to 20 kW. Add panels later without redesigning the electrical.
One App for Solar and Storage
The same Anker app manages microinverters and Anker SOLIX storage together, with per-panel output tracking so a fault shows up as a specific module rather than a vague shortfall in the monthly total.
What's Included
Sizing and Fit
Handles two PV modules, one per MPPT input
Maximum input current 16 A per input, 20 A maximum short circuit current per input
Operating voltage range 26 V to 60 V
640 VA maximum continuous output at 240 V nominal, 2.66 A nominal output current
Up to 6 units per 12 AWG branch on a 20 A breaker
Solar modules, racking, branch cabling and the AC branch circuit are not included. Rooftop PV work should be designed and installed by a licensed contractor, and a permit is generally required. Call us at (303) 876-7654 if you want help matching module wattage to the right microinverter.
MI80S or MI80L
Anker builds two versions of this microinverter on the same physical body. They are identical in size, weight, enclosure rating, temperature range and warranty. What differs is how much module you can put behind each one.
MI80S
MI80L
Maximum Continuous Output
640 VA
768 VA
Nominal Output Current
2.66 A
3.2 A
Maximum Input Current
16 A per input
18 A per input
Maximum Short Circuit Current
20 A per input
22.5 A per input
Units per 12 AWG Branch
6 (20 A breaker)
5 (20 A breaker)
Operating Voltage Range
26 V to 60 V
26 V to 60 V
Enclosure and Temperature Range
NEMA 6, -40 F to 149 F
NEMA 6, -40 F to 149 F
Warranty
10 Years
10 Years
Choose the MI80L if your modules are large enough that 640 VA would clip output on a good day, and accept five units per branch instead of six. Choose the MI80S for smaller modules and denser branch loading. If you are not sure which your array calls for, call us at (303) 876-7654 with the panel model and we will work it out with you.
Anker SOLIX MI80S Specifications
Figures below are from Anker's published specifications for the USA and Canada versions of the MI80S and MI80L.
Model
MI80S
Region
USA / Canada
Maximum Continuous Output Power
640 VA
Nominal Output Voltage
240 V
Nominal Output Current
2.66 A
Operating Voltage Range
26 V to 60 V
Maximum Input Current
16 A × 2
Maximum Input Short Circuit Current
20 A per input
MPPTs
2
Maximum Units per 12 AWG Branch
6 (20 A breaker)
Operating Ambient Temperature
-40°F to 149°F (-40°C to 65°C)
Storage Temperature
-40°F to 185°F (-40°C to 85°C)
Enclosure
NEMA 6, powder-coated die-cast aluminium
Dimensions (W × H × D)
10.3 × 8.6 × 1.7 in (263 × 218 × 42.5 mm)
Weight
6.8 lb (3.1 kg)
Warranty
10 Years Standard
Anker notes that product specifications are subject to change without notice. If you are specifying an array around these units, call us at (303) 876-7654 and we will confirm the current input limits against Anker's datasheet before you order.
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Find it cheaper at another authorized Anker SOLIX dealer? Call us before you order and we will take care of you.
Help From People Who Sell These Every Day
Call (303) 876-7654. We would rather spend ten minutes sizing your system correctly than process a return later.
Anker SOLIX MI80S Microinverter: 640 VA of Module-Level Conversion at Under 60 VDC: Frequently Asked Questions
What is the difference between the MI80S and the MI80L?
Output capacity, and that is essentially it. The MI80S delivers 640 VA and the MI80L delivers 768 VA. The larger unit accepts more input current, 18 A per input against 16 A, and fits five to a 12 AWG branch instead of six. Housing, weight, NEMA rating, temperature range and the ten-year warranty are identical.
Which one do I need for my panels?
Work from your module's rated output and short circuit current. If your panels would regularly produce more than 640 W each, the MI80S will clip that surplus and the MI80L is the better economic choice. Below that, the MI80S costs less and gives you an extra unit per branch. Call us at (303) 876-7654 with your panel model and we will check it against the input limits.
How many can I put on one circuit?
Six MI80S units on a 12 AWG branch protected by a 20 A breaker. The MI80L is five per branch because of its higher output current. Anker rates the platform for PV systems up to 20 kW total.
Why is low DC voltage such a big deal?
A string inverter collects DC from many panels in series, which puts 300 to 1,000 VDC on your roof whenever the sun is up. That voltage is present in the conductors whether or not the inverter is running, and it is a real arc-fault and shock hazard for anyone working on the roof, including firefighters. Microinverters convert at the module, so the rooftop DC circuit stays under 60 V.
What happens if one microinverter fails?
You lose the two modules connected to it and the rest of the array keeps producing. The app will show you exactly which unit stopped reporting, so the diagnosis is immediate rather than a service call to find out. A string inverter failure stops everything.
Can I mix these with panels at different angles?
That is one of the main reasons to use them. Because each MPPT operates independently, you can put modules on a south face and a west face, at different tilts, and each will find its own optimum. A single-MPPT string inverter forces the whole array to a compromise operating point.
Will it survive a Colorado winter and a Colorado summer?
Anker rates full output from -40 F to 149 F, with storage down to -40 F and up to 185 F. The die-cast aluminium body is doing the work there; plastic-housed units commonly derate at the top of that range. The enclosure is NEMA 6 against rain and dust.
Does it work during a power outage?
Grid-tied microinverters shut down during an outage by design and by code, unless paired with storage that provides a reference. Anker states that its microinverters use frequency shifting and algorithmic control to keep PV available when paired with Anker SOLIX energy storage, which is the usual arrangement. On their own, they stop when the grid stops.
Do I need an electrician?
Yes. This is a rooftop PV installation tying into your service, which means design, permitting, inspection and usually utility interconnection paperwork. The microinverter makes the DC side much safer to work around; it does not make the job a DIY project.
What is the warranty?
Ten years standard from Anker on the microinverter itself. Note that the 25 and 30 year performance figures Anker publishes alongside these units refer to PERC and IBC solar module output, not to the microinverter.
