Duracell D600-M2A
#3 in Two panelFull review
A two panel unit for smaller 300 to 350 W panels. Pairs of modern 400 W+ panels lose output to clipping.
Signature Solar $197.50$197.50
The Duracell D600-M2A is the better microinverter overall, rated 4.3 to 4.2. The Duracell D600-M2A leads on input current. The APsystems DS3-S costs $2.50 less ($195 vs $197.50).
APsystems DS3-S
#5 in Two panelFull review
A two panel unit for smaller 300 to 350 W panels. Most buyers should get the DS3-L, which costs less.
APsystems $205 US Solar Supplier $195$195
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Duracell D600-M2A for input current (20 A per input vs 16 A per input).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every two panel microinverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Duracell D600-M2A | APsystems DS3-S |
|---|---|---|
| Overall rating | 4.3/5 | 4.2/5 |
| Value 25% | 42 $0.33 per watt ($197.50, 590 W) | 49 $0.30 per watt ($195, 640 W) |
| Grid listing 20% | 100 UL 1741 listed, meets rapid shutdown | 100 UL 1741 listed, meets rapid shutdown |
| Efficiency 15% | 60 96.5% CEC weighted efficiency | 60 96.5% CEC weighted efficiency |
| Input current 15% | 100 20 A per input | 75 16 A per input |
| Warranty 25% | 100 25-year warranty | 100 25-year warranty |
Specifications
| Duracell D600-M2A | APsystems DS3-S | |
|---|---|---|
| Output | ||
| Panel inputs | 2 | 2 |
| AC output | 590 W | 640 W |
| Grid voltage | 240 V | 240 V split phase or 208 V |
| CEC efficiency | 96.5% | 96.5% |
| Peak efficiency | - | 97.3% |
| Panel input | ||
| Largest panel | 450 W | 480 W |
| Current per input | 20 A | 16 A |
| MPPT range | 22 to 55 V | 28 to 45 V |
| Listing and build | ||
| UL 1741 | Yes | Yes |
| Rapid shutdown | Yes | Yes |
| Monitoring | power line to a gateway | gateway (sold separately) |
| Enclosure | IP67 (NEMA 6) | NEMA 6 |
| Weight | - | 5.7 lb |
| Warranty | 25 years | 25 years |
| Released | - | 2021-09 |