SAJ H2 6kW Hybrid Inverter Price in Pakistan — Complete Review
MartOnline 18 min read
If you are researching hybrid solar inverters for a 3 to 5 marla home in Pakistan, the SAJ H2 6kW is one of the first models your installer will recommend. It is among the most widely installed hybrid inverters in Pakistan, used across Karachi, Lahore, Islamabad, Rawalpindi, Peshawar and Faisalabad by thousands of homeowners who want reliable solar backup during load shedding without overpaying for capacity they will never use.
But popular does not always mean right for everyone. This review covers every aspect of the SAJ H2 6kW that a Pakistani buyer needs to know before spending their money. Full specifications, real appliance load calculations, compatible batteries, installation tips for Pakistan's climate, complete system guidance and a detailed comparison with the 8kW model. Read this first.
What Is the SAJ H2 6kW Hybrid Inverter?
The SAJ H2 6kW is a single phase low voltage hybrid solar inverter manufactured by SAJ Electric, one of China's largest inverter manufacturers with products installed in over 100 countries. In Pakistan it is sold as the H2-6K-LS2 model from the H2 LS2 series, designed specifically for residential solar energy storage systems.
A hybrid inverter is fundamentally different from a basic UPS or a simple on-grid solar inverter. A UPS only stores grid electricity in a battery and provides no solar generation capability. An on-grid inverter connects solar panels to the grid and reduces your electricity bill but shuts down completely when the grid fails during load shedding. A hybrid inverter does everything. It manages solar panels, battery storage and the grid simultaneously, automatically deciding the most efficient combination to run your home at any given moment.
When the grid is up and solar is generating, the SAJ H2 6kW runs your home on solar, charges your battery with surplus energy and optionally exports excess to the grid through net metering. When load shedding hits and the grid goes down, it switches to battery power in under 10 milliseconds. When solar is generating during load shedding, it runs your home directly from panels while simultaneously recharging the battery. This intelligent energy management happens automatically, with no switches to flip or decisions to make.
SAJ H2 6kW Full Technical Specifications
These specifications are taken from the official SAJ H2 3-6K LS2 datasheet (version V1.2, July 2025):
| Specification | Value |
|---|---|
| Model | H2-6K-LS2 |
| Rated AC Output Power | 6000W |
| Maximum PV Array Power (STC) | 12000Wp |
| Maximum PV Input Power | 9600W |
| DC Oversizing | Up to 200% |
| Maximum DC Voltage | 500V |
| MPPT Voltage Range | 80V to 450V |
| Maximum Input Current | 18A per MPPT |
| Number of MPPTs | 2 independent |
| Maximum AC Output Current | 28.7A |
| Nominal AC Voltage | 220V / 230V / 240V |
| Maximum Efficiency | 97.6% |
| Euro Efficiency | 97.0% |
| UPS Switch Time | Under 10ms |
| Battery Voltage Range | 40V to 60V (LV) |
| Maximum Battery Charge / Discharge Current | 140A |
| AC Bypass Current | 63A |
| IP Protection Rating | IP66 |
| Operating Temperature | -40 to +60 degrees C (derating above 45 degrees C) |
| Cooling | Natural convection |
| Noise Level | Under 35 dBA |
| Weight | 24kg |
| Dimensions (H x W x D) | 590 x 380 x 241mm |
| Display | Touch LCD and App |
| Communication | Wi-Fi, Ethernet or 4G (optional) |
| Standard Warranty | 5 years |
| Extended Warranty Option | 10 years |
What Appliances Can the SAJ H2 6kW Run?
This is the most important question for Pakistani buyers and the one that determines whether the 6kW is the right size or whether you need to step up to the 8kW or 10kW.
The SAJ H2 6kW has a rated output of 6000W. Your total simultaneous load at any moment must stay within this figure. Here is a realistic load breakdown for a typical Pakistani home:
Typical 3 to 4 marla home load:
| Appliance | Approximate Load |
|---|---|
| 1 ton inverter AC | 900W |
| Refrigerator | 150W |
| Ceiling fans (4) | 200W |
| LED lights | 60W |
| Television | 80W |
| Router and misc | 50W |
| Total | 1440W |
At 1440W simultaneous load, a 3 to 4 marla home runs comfortably within the 6kW capacity with significant headroom. Even with the water pump running briefly (500W to 750W) and the AC compressor starting up, peak loads rarely exceed 3000W to 3500W in this size home.
Typical 5 marla home load:
| Appliance | Approximate Load |
|---|---|
| 1.5 ton inverter AC | 1400W |
| Refrigerator | 150W |
| Ceiling fans (5) | 250W |
| LED lights | 80W |
| Television | 80W |
| Water pump (intermittent) | 750W |
| Router and misc | 50W |
| Total (pump running) | 2760W |
At 2760W, a 5 marla home with a 1.5 ton AC still sits well within the 6kW rating. However during summer when the AC runs at higher capacity and the water pump is on, simultaneous peaks can approach 4000W to 4500W. The 6kW handles this but with less comfort. The SAJ H2 8kW is the safer choice for 5 marla homes with heavier usage.
What the SAJ H2 6kW cannot handle:
A 2 ton AC draws approximately 2000W to 2400W on its own. Combined with a refrigerator, water pump, fans and lights, total load easily exceeds 6000W. For homes with a 2 ton AC or multiple ACs running simultaneously, the SAJ H2 8kW or SAJ H2 10kW is required.
Who Is the SAJ H2 6kW Best For?
Ideal for:
- 3 marla home
- 4 marla home
- 5 marla home with moderate load
- Small apartment
- Small shop or single office room
Consider the SAJ H2 8kW instead if:
- Your home is 5 to 8 marla
- You run a 1.5 ton AC as your main AC
- You have a water pump that runs alongside heavy household load
- Your monthly electricity bill is above Rs 25,000
Consider the SAJ H2 10kW instead if:
- Your home is 8 to 10 marla
- You run two ACs simultaneously
- You have a heavy electrical load from multiple appliances at once
Compatible Batteries for the SAJ H2 6kW
The SAJ H2 6kW works with low voltage lithium batteries in the 40V to 60V range. Three options are available from MartOnline, each with different strengths:
The natural pairing for the SAJ H2 6kW. Plug-and-play compatibility means the inverter and battery communicate automatically via CAN protocol with no additional configuration needed. With over 8000 cycle life at 90% depth of discharge and 95% usable capacity, the SAJ EK30 B3 provides 7 to 10 hours of backup for a typical Pakistani home running a 1.5kW to 2kW load during load shedding. Up to 16 units can be connected in parallel for a maximum of 256kWh of total storage.
An excellent alternative with 10000 cycle life, 25% more than the SAJ battery. Compatible via CAN 2.0 and RS485 protocols. Built-in casters make repositioning during installation straightforward. For buyers prioritising the longest possible battery lifespan, the Sunwoda Atrix Max Plus is worth considering. Up to 32 units can be paralleled for very large storage systems.
Designed specifically for the Pakistani solar market with 6000 cycle life and 10kW maximum discharge power. Compatible with SAJ and most other hybrid inverters via RS485 and CAN protocols. A practical choice for Pakistani buyers looking for a locally supported battery solution.
How much backup will you get?
With a fully charged 16kWh LiFePO4 battery and 95% usable capacity:
- Usable energy: 15.2kWh
- At 1.5kW load (fans, lights, fridge, TV): 15.2 divided by 1.5 = approximately 10 hours
- At 2.5kW load (1 ton AC plus household): 15.2 divided by 2.5 = approximately 6 hours
- At 3.5kW load (1.5 ton AC plus household): 15.2 divided by 3.5 = approximately 4.3 hours
For most Pakistani cities where load shedding runs 6 to 8 hours daily, a single 16kWh battery covers the outage period when the battery is being topped up by solar during daylight hours between outages.
Solar Panels for the SAJ H2 6kW
The SAJ H2 6kW has 2 independent MPPT inputs, each accepting up to 18A of input current with a maximum of 500V DC and an MPPT voltage window of 80V to 450V. With DC oversizing of up to 200%, you can connect up to 12000Wp of solar panels in total.
For a practical Pakistani installation using 550W panels:
- Recommended total: 12 to 16 panels
- 12 panels = 6600Wp
- 16 panels = 8800Wp
- Absolute maximum: about 21 panels (12000Wp)
Your installer designs the string layout so that each string stays inside the 80V to 450V MPPT window and well below the 500V maximum, including on cold winter mornings when panel voltage rises.
The DC oversizing is not a flaw or a workaround. It is standard engineering practice. Connecting 8kWp to 9kWp of panels to a 6kW inverter ensures the inverter operates at its full 6kW output for more hours of the day, including during cloudy conditions, early morning and late afternoon when panels produce below their rated output. In Pakistan where peak solar hours are typically 4 to 6 hours, oversizing maximises the energy your system captures and stores.
Three Operating Modes
The SAJ H2 6kW supports three configurable operating modes:
Self-Consumption Mode
Solar power runs your home first. Surplus charges the battery. When solar is insufficient, battery supplements. Grid is used only as last resort. This is the recommended mode for most Pakistani homes as it minimises electricity bills while maintaining backup.
Backup Priority Mode
The inverter prioritises keeping the battery fully charged at all times. Grid electricity tops up the battery when solar is insufficient. Useful for homes in areas with very unpredictable load shedding schedules where maximum backup readiness is the priority.
Time of Use Mode
Charges the battery during off-peak tariff hours and discharges during peak tariff hours. Relevant for commercial connections where time-of-use electricity pricing applies.
Complete Solar System Guide for SAJ H2 6kW
A complete 6kW hybrid solar system for a Pakistani home consists of four main components. Here is what you need:
Component 1: The Inverter
The SAJ H2 6kW hybrid inverter is the brain of the system. Contact MartOnline via WhatsApp for current pricing.
Component 2: Solar Panels
For a 6kW system, 12 to 16 panels of 550W each are typical. Panel prices in Pakistan change frequently. A complete 6kW panel array may include mounting structure and DC cabling. Your installer will quote based on your roof layout and orientation. Panels should face south for maximum generation in Pakistan.
Component 3: Battery Storage
A single 16kWh LiFePO4 battery is the standard starting point for a 6kW system. Options include the SAJ EK30 B3, Sunwoda Atrix Max Plus and Mesol 16kWh Infiniti. A second battery can be added later if backup duration needs to increase.
Component 4: Installation
Professional installation by a certified solar installer is required. Installation typically includes mounting the inverter and battery, running AC and DC cabling, earthing, commissioning and registration for net metering if applicable. Installation costs vary by city and installer.
Use our solar calculator to estimate the right system size for your specific appliances and load shedding hours before contacting us.
Installation Tips for Pakistan
This section covers practical installation guidance specific to Pakistan's climate and conditions. Your installer should follow these points.
Inverter Location
The SAJ H2 6kW is IP66 rated, meaning it is dust tight and protected against powerful water jets, so it can be installed indoors or in a sheltered outdoor location. The ideal location in a Pakistani home is a utility room, garage or covered veranda wall where the inverter is protected from direct rain. Avoid fully exposed outdoor walls where the inverter faces direct monsoon rain, especially in Karachi where rain can be intense. Even with IP66 protection, minimising direct water exposure extends the inverter's life. Mount it at a height where you can easily read the touch display and connect a phone for Wi-Fi setup.
Ventilation Requirements
The SAJ H2 6kW uses natural convection cooling with no fan, which keeps it quiet, but it still generates heat during operation and relies on free airflow around the casing. Mount it on a wall with at least 30cm of clear space above, below and to the sides. Never install it in a fully enclosed cabinet without ventilation. In Pakistan's summer months when temperatures exceed 45 degrees Celsius, poor ventilation leads to thermal derating where the inverter reduces output to protect itself. Good airflow prevents this.
Avoid Direct Sunlight on the Inverter
Do not mount the inverter on a wall that receives direct afternoon sunlight. In Pakistan's summer, a south or west facing wall in direct sun can reach 60 to 70 degrees Celsius surface temperature. The inverter operates in ambient temperatures up to 60 degrees Celsius but derates its output above 45 degrees Celsius, and direct sunlight on the casing adds additional thermal stress. A shaded north or east facing wall is ideal.
Battery Location
The SAJ EK30 B3 and Mesol 16kWh Infiniti are designed for indoor floor installation. Place the battery in the same room as the inverter or as close as possible to minimise DC cable length. Shorter DC cables mean less voltage drop and lower energy losses. Avoid storing the battery in rooms where temperatures regularly exceed 45 degrees Celsius, such as a rooftop room in summer.
The Sunwoda Atrix Max Plus has built-in casters, making it easy to position during installation. Ensure the floor can support 130kg before placing it.
Earthing
Proper earthing is critical for safety and is checked as part of net metering approval. Ensure your installer provides a verified earth connection for both the inverter and the battery. Poor earthing is a common problem in Pakistani solar installations that can damage equipment and create safety hazards.
Cable Sizing
DC cables from solar panels to the inverter and AC cables from the inverter to your distribution board must be properly sized for the current they carry. Undersized cables cause voltage drop, energy loss and heat buildup. Insist that your installer uses cables rated for the SAJ H2 6kW's specified current ratings. Do not accept substitutions on cable quality to cut installation costs.
Wi-Fi Setup
The SAJ H2 6kW connects to your home Wi-Fi network for monitoring via the eSAJ app. Ensure your Wi-Fi router signal reaches the inverter location. In larger homes where the inverter is far from the router, a Wi-Fi extender placed between the router and inverter solves connectivity issues. Stable internet monitoring is the only way to catch faults early without waiting for your installer to visit.
Net Metering Registration
If you want to export solar energy to the grid and earn electricity bill credits, your installer must register your system with your local DISCO (K-Electric in Karachi, LESCO in Lahore, IESCO in Islamabad). The SAJ H2 6kW is designed to meet NEPRA's technical requirements for net metering. Start the registration process at the same time as installation as it takes several weeks to complete.
SAJ H2 6kW vs SAJ H2 8kW
| Feature | SAJ H2 6kW | SAJ H2 8kW |
|---|---|---|
| Rated Output | 6000W | 8000W |
| Max PV Array Power | 12000Wp | 16000Wp |
| DC Oversizing | Up to 200% | Up to 200% |
| Max Battery Charge Current | 140A | 190A |
| Best Home Size | 3 to 5 marla | 5 to 8 marla |
| Comfortable AC Size | 1 ton | 1.5 ton |
| Weight | 24kg | 29kg |
| Warranty | 5 years (10 year option) | 5 years (10 year option) |
The most meaningful difference beyond output capacity is battery charging current. The SAJ H2 8kW charges at 190A versus 140A on the 6kW. In practical terms, the 8kW can charge a 16kWh battery at up to roughly 36% higher current than the 6kW. During Pakistan's peak solar window of 4 to 6 hours, faster charging means more energy stored before the afternoon load shedding begins.
If your home is firmly 3 to 4 marla with a 1 ton AC, choose the 6kW. If there is any doubt, choose the 8kW. Upgrading your inverter later is expensive. Oversizing slightly at purchase is not.
Monitoring with the eSAJ App
The SAJ H2 6kW connects to SAJ's eSAJ monitoring platform via Wi-Fi. The eSAJ app is free, available for Android and iOS, and provides:
- Real-time solar generation
- Battery state of charge
- Home consumption
- Grid import and export
- Daily, monthly and yearly energy data
- Fault alerts and notifications
- Remote configuration of operating modes
The monitoring is free for the lifetime of the inverter. For Pakistani homeowners who want visibility into their solar system performance without calling their installer, the eSAJ app is straightforward to set up during installation commissioning.
Warranty
The SAJ H2 6kW comes with a 5 year standard manufacturer warranty, which can be extended to 10 years through SAJ's extended warranty program. The warranty covers manufacturing defects and component failures under normal operating conditions.
Always purchase from an authorised dealer to ensure your warranty is registered and valid with SAJ Electric. MartOnline supplies genuine SAJ products with full manufacturer warranty support.
SAJ H2 6kW Price in Pakistan
Hybrid inverter prices in Pakistan change frequently due to currency fluctuations and import duty adjustments. Contact MartOnline via WhatsApp for the current PKR price of the SAJ H2 6kW. We stock genuine SAJ H2 6kW inverters and can provide a complete system quotation including compatible batteries and installation guidance for your specific home and location.
Use our solar calculator to estimate the right system size before getting in touch.
Frequently Asked Questions
What is the price of the SAJ H2 6kW hybrid inverter in Pakistan?
SAJ H2 6kW hybrid inverter prices in Pakistan change frequently due to import duty adjustments and currency fluctuations. Rather than publish a price that may be outdated within days, we recommend contacting MartOnline via WhatsApp for the current PKR price. We stock genuine SAJ H2 6kW inverters with full manufacturer warranty and can provide a complete system quotation including compatible batteries like the SAJ EK30 B3 and solar panels for your specific home size and load requirements in Karachi, Lahore, Islamabad or anywhere across Pakistan.
Can the SAJ H2 6kW run a 1.5 ton AC during load shedding in Pakistan?
Yes, the SAJ H2 6kW can run a 1.5 ton inverter AC which typically draws 1200 to 1500W during operation. Combined with a refrigerator, fans and lights, a total simultaneous load of 2000W to 2500W, you remain well within the 6000W rated capacity. However if you also run a water pump alongside a 1.5 ton AC, simultaneous peaks may approach 3500W to 4000W. The inverter handles this but with less headroom. For a 5 marla home with a 1.5 ton AC and a water pump, the SAJ H2 8kW provides a more comfortable safety margin.
How many solar panels can I connect to the SAJ H2 6kW?
The SAJ H2 6kW accepts up to 12000Wp of solar panels across 2 independent MPPT inputs, with a maximum DC voltage of 500V and up to 18A per MPPT input current. In practical terms, a typical installation connects 12 to 16 panels of 550W each for a total of 6600Wp to 8800Wp of solar capacity. The DC oversizing of up to 200% allows connecting panels rated above the inverter's 6kW AC output, which is standard practice to maximise energy harvest during the early morning, late afternoon and cloudy conditions common in Pakistan's monsoon months.
What is the UPS switch time of the SAJ H2 6kW during load shedding?
The SAJ H2 6kW switches to battery backup in under 10 milliseconds when the grid goes down. At under 10ms, most household appliances including fans, lights, refrigerators and televisions continue operating without interruption. Sensitive electronics like computers may notice a very brief transition at 10ms but generally continue operating without data loss or restart. For applications requiring truly seamless switching, the GoodWe ET LV series with its sub-4ms switching is worth considering, though it is a three phase commercial model at a higher price point.
Can I add more batteries to the SAJ H2 6kW later?
Yes, the SAJ H2 6kW supports multiple batteries connected in parallel, and up to 4 units of the inverter itself can be paralleled for increased output. If you start with a single SAJ EK30 B3 16kWh battery and find you need more backup coverage as your usage grows, you can add a second 16kWh battery later without changing your inverter. The Sunwoda Atrix Max Plus supports up to 32 units in parallel for very large storage requirements. This scalability makes the SAJ H2 6kW a practical long-term investment that grows with your energy storage needs.
What is the difference between the SAJ H2 6kW and the SAJ H1 6kW?
The SAJ H2 is the newer generation replacing the older H1 series. The H2 offers a maximum efficiency of 97.6%, automatic BMS communication with compatible batteries, the eSAJ monitoring platform with free Wi-Fi app monitoring and a 10 year extended warranty option. If choosing between the two, always select the H2. It is the current production model with better support, longer warranty options and wider availability through authorised dealers in Pakistan.
