SAJ Inverter Review (Philippines): A Named Davao Partner, Still Early
Published specifications for the H2 hybrid series (LV, LV split-phase, HV split-phase). A brand ships several series, so these figures describe this model and not every product the manufacturer sells.
- Rated power
- not publishedNot stated in the materials we reviewed for the residential H2 line.
- Type
- HybridThe H2 LV is compatible with both LiFePO4 and lead-acid. An LV split-phase variant can integrate diesel-generator backup. The HV split-phase variant targets the higher-voltage architecture common in North America.
- Maximum efficiency
- not publishedNot stated in the materials we reviewed.
- Warranty
- not publishedNone of SAJ public materials we reviewed state a term in years for the residential H2 line. Get it in writing from Bossway Solar before committing.
- Energy management
- AI Saving 2.0Shown at SNEC 2025. Load and generation forecasting, electricity-price prediction, and coordination between generation, storage and consumption.
- Philippine channel
- Bossway Solar Corporation, Sasa, Davao CityAnnounced as a strategic partnership at SNEC 2025 on 11-13 June. Bossway is a real operating solar company with a public business presence and posted footage of Davao commercial installations. We could not find the partnership announced on SAJ Philippine-facing pages, in any Philippine distributor directory, or by Bossway itself, and neither IAN Solar nor JapanSolar carries SAJ.
Source: SAJ Electric. Checked 2026-09-28. Manufacturers revise specifications between series without notice — confirm the figures for the exact model you are quoted before you pay.
What it does well
- A named Philippine partner you can actually verify exists, Bossway Solar Corporation of Davao City, which is more than most brands in this band can show.
- A substantial manufacturer since 2005 that states the number one market share in Brazil, so the company behind the warranty is not a newcomer.
- The AI Saving 2.0 energy management system does forecasting and price prediction rather than simple time-of-use scheduling, which is a genuine feature rather than a badge.
Where it falls short
- Regional, not national: the confirmed partner is Davao-based, so a Luzon or Visayas buyer needs to ask whether units and parts are stocked and serviced locally or whether a claim ships to Mindanao.
- No warranty term stated anywhere in the residential materials we could review, which on a hybrid inverter is the figure that matters most.
- The partnership dates to mid-2025 with no multi-year Philippine track record, and most of what is verifiable traces back to SAJ own press coverage rather than independent local reviews or installer forums.
Compare against the other 29 hybrid inverters we have reviewed
How the H2 hybrid series (LV, LV split-phase, HV split-phase) compares with the other hybrid inverters we have reviewed. Listed in no particular order — this puts published figures side by side, it does not pick a winner. Scroll the table sideways to see every column.
| Model | Rated power | Maximum efficiency | MPP trackers | Warranty |
|---|---|---|---|---|
| H2 hybrid series (LV, LV split-phase, HV split-phase) this review | — | — | — | — |
| SH-RS residential hybrid series | 3.0–6.0 kW single phase | 97.7% (SH5.0RS) | 2 | 10 years parts and labour |
| ES G2 (GW5000-ES-20) | 5 kW single phase | — | 2 | 5 years |
| S6-EH1P5K-L-PLUS (S6 platform) | 5 kW single phase | 96.2% | 2 | 5 years |
| SUN-K-SG04LP1 / LP3 hybrid series | 3–5 kW typical residential | Around 97.6% | — | 5 years, 10 on registration |
| SPH residential hybrid series | 3–5 kW typical residential | 97–98% | — | 5 years, 10 on registration |
| SUN2000-L1 single-phase hybrid | 2–6 kW single phase | 98.2–98.6% | — | 10 years |
| Residential inverter and power optimiser system | — | — | — | — |
| ECCO hybrid range | 3.6-7 kW single phase | — | 2 | 5 years, 10 with a Sunsynk battery |
| MultiPlus and Quattro inverter/chargers | MultiPlus 800 VA-5 kVA, Quattro 3-10 kVA | — | — | 5 years |
| LXP and GEN hybrid series | 3-14 kW | 97.5% (12 kW unit) | — | 5 or 10 years |
| Sunny Boy and Sunny Tripower | Roughly 1.5-6 kW (Sunny Boy core) | Around 97.5% peak (Sunny Boy) | — | 5 years, free to 10, paid to 15 |
| Primo, Symo and Symo GEN24 Plus | Roughly 1.5-24 kW | — | — | Around 30 months standard |
| X1-Hybrid and X3-Hybrid G4 | 5-7.5 kW single phase | — | 2 | 5 years, free to 10 |
| Grid-tied and hybrid range | Grid-tied 1-170 kW, hybrid 3-80 kW | — | — | — |
| Off-grid and hybrid inverters and MPPT charge controllers | 5-10 kW | — | — | — |
| Hybrid, on-grid, off-grid and LFP storage range | — | — | — | — |
| AN-SCI-EVO series (SCI-EVO-4200 and SCI-EVO-6200) | 4,200 W and 6,200 W | — | — | — |
| Grid-tied string, hybrid and storage inverters | — | — | — | — |
| Off-grid and hybrid inverters, 3-5 kVA class | 3-5 kVA on the units we found listed | — | — | — |
| Residential hybrid inverters and storage | — | — | — | — |
| KSTAR New Energy PV inverters and storage | — | — | — | — |
| Grid-tied, hybrid and battery inverters | — | — | — | — |
| Residential, commercial and microgrid storage inverters | — | — | — | — |
| PIP-LV, PIP-MS/MSX and LVX series | 1-6.2 kW class across the range | — | — | 1 year |
| PV1800 series inverter/charger | 1-6.2 kW | — | — | — |
| SMT series residential and commercial hybrid inverters | — | — | — | — |
| Integ M Series | 3-50 kW across the Integ M Series | — | — | — |
| 48 V hybrid inverters, 5-8 kW class | 5-8 kW | Up to 98% | — | 1 or 10 years, depending on the seller |
| Off-grid and backup inverters and hybrid inverter/chargers | — | — | — | — |
Dashes are figures the manufacturer does not publish, not zeros. Where two products differ on a spec, which one matters depends on your roof and your usage — a higher efficiency panel earns its premium on a small roof and rarely on a large one.
SAJ (Guangzhou Sanjing Electric Co., Ltd., trading as SAJ Electric) is a Chinese inverter and energy-storage manufacturer founded in 2005, with a significant global footprint — the company states it holds the No. 1 market share in Brazil and is expanding across Europe. For years it had no confirmed foothold in the Philippines. That changed in 2025, and it is the reason this brand gets a full review instead of the shorter “no channel found” treatment.
The channel: Bossway Solar Corporation, Davao City
At SNEC 2025, the major Shanghai PV trade show held June 11-13, SAJ publicly announced strategic partnership agreements to expand into Southeast Asia. Industry coverage of the event names the specific partners: a storage deal with Australia’s OSW, an agreement with Brightfield Trading in Malaysia, and an agreement with Bossway Solar (Philippines), described as part of SAJ’s plan “to scale deployment in the Asia-Pacific region.”
Bossway Solar Corporation is a real, operating solar company based in Sasa, Davao City — it has a public business presence and has posted footage of commercial solar installations in Davao. That makes SAJ’s Philippine channel a named company you can actually verify exists, which is more than most brands on this list can claim.
One more caveat worth stating plainly: the partnership is reported in trade coverage of the Shanghai show, and we could not find it announced on SAJ’s own Philippine-facing pages, in any Philippine distributor directory, or by Bossway itself. A separate check of two major Philippine inverter distributors, IAN Solar and JapanSolar, found neither carrying SAJ. Treat the channel as real but narrow and recent, not as established national distribution.
Be precise about what this does and doesn’t confirm, though. The public announcement describes a strategic agreement “to scale deployment,” which reads as an early-stage regional partnership rather than a mature, nationwide distributor network with the kind of launch event and installer training program Hoymiles ran with Brills Marketing Corporation. Bossway Solar is Davao-based; if you’re buying in Luzon or the Visayas, ask directly whether SAJ units and parts are actually stocked and serviced in your region, or whether you’d be shipping a warranty claim to Mindanao. That regional concentration is the main reason this review sits below Hoymiles despite both brands being recent Philippine entries with a real, named local partner behind them.
Lineup
SAJ’s residential range centers on the H2 hybrid inverter series, including an H2 LV variant compatible with both LiFePO4 and lead-acid batteries, an H2 LV split-phase variant that can integrate diesel-generator backup, and an H2 HV split-phase variant built for the higher-voltage architecture common in North America. The company also showed an updated AI Saving 2.0 energy management system at SNEC 2025 — load and generation forecasting, electricity-price prediction, and coordination between generation, storage and consumption — plus a residential storage product line branded eleX. None of SAJ’s public materials we reviewed state a specific warranty term in years for the residential H2 line; get that in writing from Bossway Solar before you commit.
See what is a hybrid inverter for how this category compares to string and microinverter designs, and inverter types for the broader picture.
What SAJ costs in the Philippines
We have no verifiable Philippine pricing for SAJ specifically — the partnership is too new for a stable local price to have settled, and we are not going to publish a number pulled from a global distributor’s list price as though it applied here. Our hybrid inverter price guide has the general bands by system size; get a written quote from Bossway Solar and compare it against that band and against an established brand like Deye or Growatt on peso per watt.
Where it falls short
- Regional, not national. The confirmed partner is Davao-based; coverage elsewhere in the Philippines is unconfirmed.
- No stated warranty term for the residential line in the materials we could review.
- New partnership. The agreement dates to mid-2025, so there isn’t yet a multi-year Philippine track record to point to.
- Thin independent documentation. Most of what’s verifiable about SAJ in the Philippines traces back to SAJ’s own press coverage of the partnership, not independent local reviews or installer forums.
Who it’s best for
A Davao-area buyer, or someone working with an installer who already sources through Bossway Solar, who wants SAJ’s energy-management features and is comfortable being an early adopter of a new regional partnership. For anyone outside Mindanao, or anyone who wants a brand with a multi-year Philippine installed base and installer familiarity nationwide, Deye, Growatt or Solis remain the safer default. Ask any installer quoting SAJ whether they’ve sourced through Bossway Solar directly, and confirm the warranty terms in writing — see how to choose a solar installer.
Hybrid inverter brands with a Philippine channel
If SAJ is off the table because nobody local carries it, these are the hybrid inverter brands where we found a named Philippine party — a distributor, an official storefront, or a local manufacturer — that a warranty claim could actually be put to.
| Brand | Available through | Our review |
|---|---|---|
| GoodWe | Solaric | — |
| Luxpower | Photonergy | — |
| PowMr | Official POWMR Flagship Store, Lazada PHofficial marketplace store | read |
| Sunsynk | EcoSolutions (ECCO hybrid range) | — |
| Victron | PhilSolar, exclusive PH distributor | — |
Channels last verified 2026-08-16. Distribution agreements lapse without notice — we have already seen one distributor drop three brands and another let its site go dark — so confirm the brand is still carried before you pay for anything. A brand missing from this table has not been confirmed as unavailable; it means we have not verified a channel for it, which is a different claim. Where we have verified that a brand has no local channel, it has its own review saying so.