SAJ H2 12kW Hybrid Inverter Price in Pakistan — Complete Review 2026
MartOnline 14 min read
The SAJ H2 12kW is SAJ's most powerful single phase hybrid inverter, designed for large homes and light commercial properties in Pakistan. At Rs 365,000 it sits at the top of the SAJ H2 residential range, completing the series that starts at the SAJ H2 6kW and steps through the SAJ H2 8kW and SAJ H2 10kW.
If you live in a 1 kanal home in Lahore, a 300 to 400 gaz bungalow in Karachi, or a large property anywhere in Pakistan with heavy AC loads and a single phase electricity connection, the SAJ H2 12kW is the inverter to consider.
This review covers everything you need to know before buying — specifications, battery compatibility, load calculations for Pakistani homes, backup hours, and how it compares to the SAJ H2 10kW and GoodWe ES Uniq 12KW.
SAJ H2 12kW Specifications
| Specification | Value |
|---|---|
| Rated Output Power | 12 kW |
| Phase | Single Phase |
| Type | LV Hybrid Inverter |
| MPPT Inputs | 2 |
| Maximum PV Input | 24,000 Wp (200% oversizing) |
| Maximum DC Voltage | 500V |
| Battery Voltage Range | Low Voltage 40–60V |
| Maximum Charging Current | 240A |
| Maximum Discharging Current | 240A |
| IP Rating | IP65 |
| Switching Time | Standard |
| Maximum Parallel Units | 4 units |
| Maximum Efficiency | 97.6% |
| Warranty | 5 years standard / 10 years extended |
Who Needs a 12kW Inverter in Pakistan?
The 12kW output is specifically for Pakistani homes where a 10kW inverter would be running close to its limit.
Lahore — 1 Kanal homes:
A typical 1 kanal home in DHA Lahore, Gulberg, Model Town or Bahria Town running four 1.5 ton ACs has a simultaneous peak load of approximately 8,750W. Adding fans, lights, water pump and appliances brings this to approximately 10,500W with a 20 percent safety margin. The SAJ H2 12kW handles this comfortably with 1,500W of headroom above the calculated peak.
| Appliance | Load |
|---|---|
| 4x 1.5 ton inverter AC | 5,600W |
| 16 ceiling fans | 1,200W |
| LED lights | 300W |
| 2x refrigerators | 400W |
| Water pump | 750W |
| Other appliances | 500W |
| Total peak load | 8,750W |
| With 20% safety margin | ~10,500W |
Karachi — 240 to 400 gaz bungalows:
A 300 to 400 gaz Karachi bungalow in DHA, Clifton or PECHS running a 2 ton AC, two 1.5 ton ACs and full household load peaks at approximately 8,300W. With the 20 percent safety margin the inverter needs to handle approximately 10,000W — directly in the SAJ H2 12kW's wheelhouse.
| Appliance | Load |
|---|---|
| 1x 2 ton inverter AC | 2,000W |
| 2x 1.5 ton inverter AC | 2,800W |
| 8 ceiling fans | 600W |
| LED lights | 150W |
| Refrigerator | 200W |
| Water pump | 750W |
| Washing machine | 500W |
| Other appliances | 300W |
| Total peak load | 8,300W |
| With 20% safety margin | ~10,000W |
When to choose 12kW over 10kW:
Choose the SAJ H2 12kW if any of the following apply to your home:
- You run three or more 1.5 ton ACs simultaneously
- You have a 2 ton AC alongside two 1.5 ton ACs
- Your property is 1 kanal or larger in Lahore
- Your property is 300 gaz or larger in Karachi
- You want maximum headroom for future AC additions
- You need the fastest possible battery charging between outages
Solar Panel Compatibility
The SAJ H2 12kW supports 200 percent PV oversizing, meaning up to 24,000Wp of solar panels can be connected to a 12kW inverter. The two independent MPPT inputs allow the panel array to be split across two roof sections with different orientations.
Typical panel configurations for Pakistani rooftops:
| Panels | Panel Size | Total PV | Coverage |
|---|---|---|---|
| 20 panels | 600W | 12,000Wp | South-facing only |
| 24 panels | 600W | 14,400Wp | South + partial east/west |
| 28 panels | 600W | 16,800Wp | Split across two orientations |
| 40 panels | 600W | 24,000Wp | Maximum (two full strings) |
For most 1 kanal homes in Lahore and 300 to 400 gaz homes in Karachi, 24 to 28 panels of 600W are sufficient to generate daily energy that covers daytime consumption and fully recharges the battery bank.
The two MPPT inputs are particularly useful for Pakistani homes where water tanks, staircase rooms or parapets create shading on part of the roof. Splitting the array across the two MPPTs means shading on one string does not reduce output from the other.
Battery Compatibility and Recommendations
The SAJ H2 12kW works with all low voltage lithium LFP batteries in the 40V to 60V range. Three batteries available from MartOnline pair well with this inverter:
SAJ EK30 B3 16kWh — Rs 580,000 The natural pairing for the SAJ H2 12kW. Plug-and-play CAN communication means the inverter and battery communicate automatically with no additional configuration. Over 8,000 cycle life, 15.2kWh usable at 95 percent DOD.
Sunwoda Atrix Max+ 16kWh — Rs 600,000 The longest cycle life available — 10,000 cycles versus 8,000 on the SAJ battery. For homeowners who prioritise maximum battery longevity, the Sunwoda is the premium choice. Built-in casters make installation in a utility room or garage straightforward.
Mesol 16kWh Infiniti — Rs 635,000 Designed specifically for the Pakistani market with 10kW maximum discharge power. A locally supported option for homes that need high discharge rates to power multiple large ACs simultaneously during backup.
Recommended battery count for different backup durations:
| Setup | Usable Capacity | Essential Backup | With 1 AC | With 2 ACs |
|---|---|---|---|---|
| 1x 16kWh battery | 15.2kWh | ~10 hours | ~4.9 hours | ~3.4 hours |
| 2x 16kWh batteries | 30.4kWh | ~20 hours | ~9.8 hours | ~6.7 hours |
| 3x 16kWh batteries | 45.6kWh | ~30 hours | ~14.7 hours | ~10 hours |
Essential backup load assumed at 1,500W. With 1 AC total load at 3,100W. With 2 ACs total load at 4,500W.
For most 1 kanal and large bungalow owners, two 16kWh batteries is the recommended starting configuration. This provides approximately 10 hours of backup running one 1.5 ton AC plus essential loads — more than enough to cover both the evening and early morning load shedding windows without running out.
The 240A Battery Charging Advantage
One of the most important practical differences between the SAJ H2 12kW and the smaller models in the range is the maximum battery charging current.
| Model | Max Charging Current | Charging Power | Time to charge 16kWh (20→100%) |
|---|---|---|---|
| SAJ H2 6kW | 120A | ~6.1kW | ~125 minutes |
| SAJ H2 8kW | 200A | ~10.2kW | ~75 minutes |
| SAJ H2 10kW | 200A | ~10.2kW | ~75 minutes |
| SAJ H2 12kW | 240A | ~12.3kW | ~62 minutes |
At 240A and 51.2V nominal battery voltage, the SAJ H2 12kW delivers approximately 12,300W of battery charging power — the highest of any single phase LV inverter in the SAJ H2 range.
This matters practically for Pakistani homes experiencing two load shedding windows per day. After the morning outage ends and grid power returns, you have a window of solar generation to recharge the battery before the evening outage begins. At 240A, the SAJ H2 12kW can recharge a depleted 16kWh battery from 20 percent to full in approximately 62 minutes of peak solar generation. With two 16kWh batteries, full recharge takes approximately 2 hours. This fast recharge cycle means your battery is fully topped up and ready for the evening outage window every day.
SAJ H2 12kW vs SAJ H2 10kW — Should You Upgrade?
The price difference between the SAJ H2 10kW and the SAJ H2 12kW is Rs 40,000. Here is what you get for that upgrade:
| Feature | SAJ H2 10kW | SAJ H2 12kW |
|---|---|---|
| Rated output | 10kW | 12kW |
| Max PV input | 20,000Wp | 24,000Wp |
| MPPT inputs | 2 | 2 |
| Max charging current | 200A | 240A |
| Battery charge time (16kWh) | ~75 min | ~62 min |
| Max parallel units | 4 | 4 |
| IP rating | IP65 | IP65 |
| Price | Rs 325,000 | Rs 365,000 |
| Difference | — | +Rs 40,000 |
Choose the 10kW if: Your peak simultaneous load is below 8,000W and you do not plan to add more ACs. The 10kW handles 8 to 10 marla homes in Lahore and 200 to 240 gaz homes in Karachi perfectly.
Choose the 12kW if: Your peak load exceeds 8,000W, you have a 1 kanal home, you run three or more ACs, or the faster 240A battery charging is important to your daily routine. At Rs 40,000 more than the 10kW, the 12kW is excellent value for the additional capability.
SAJ H2 12kW vs GoodWe ES Uniq 12KW
Both are 12kW single phase LV hybrid inverters. Here is the honest comparison:
| Feature | SAJ H2 12kW | GoodWe ES Uniq 12KW |
|---|---|---|
| Rated output | 12kW | 12kW |
| Max PV input | 24,000Wp | 24,000Wp |
| Max charging current | 240A | 240A |
| IP rating | IP65 | IP66 |
| Max parallel units | 4 units | 16 units |
| Switching time | Standard | Under 4ms |
| Price | Rs 365,000 | Rs 412,000 |
| Difference | — | +Rs 47,000 |
The SAJ H2 12kW is Rs 47,000 less expensive than the GoodWe ES Uniq 12KW. The GoodWe has two advantages: IP66 ingress protection versus IP65 on the SAJ, and support for up to 16 units in parallel versus 4 on the SAJ.
Choose the SAJ H2 12kW if: Your installation is indoors or in a sheltered location where IP65 is sufficient, and you do not plan to run more than 4 inverters in parallel. The Rs 47,000 saving is meaningful.
Choose the GoodWe ES Uniq 12KW if: Your installation is fully outdoors and exposed to heavy rain or coastal conditions where IP66 is important, or if your system may need to scale beyond 4 inverter units.
Off-Grid Capability
The SAJ H2 12kW fully supports off-grid operation with no grid connection. It runs entirely from solar panels and battery storage, making it suitable for properties in areas with very unreliable grid supply — whether in Karachi's high-loss K-Electric areas or remote properties outside major cities.
For homeowners in Karachi's Malir, Korangi, Lyari, Orangi Town or other high-loss areas experiencing 8 to 12 hours of daily load shedding, the SAJ H2 12kW in off-grid mode with three 16kWh batteries provides a viable path to complete energy independence. Read our off-grid solar system guide for Karachi for detailed off-grid system sizing.
Up to 4 SAJ H2 12kW units can be connected in parallel, giving a combined output of 48kW for very large single phase systems. This level of scalability makes the SAJ H2 12kW suitable for large farmhouses and commercial properties that need to expand capacity incrementally.
Load Shedding Backup — How Long Does It Run?
For Lahore homeowners the backup calculations below use a typical evening outage scenario with the full household load during load shedding.
With 2x SAJ EK30 B3 16kWh batteries (30.4kWh usable):
| Load Scenario | Estimated Backup Duration |
|---|---|
| Essential loads only (fans, lights, fridge, WiFi — 1,500W) | ~20 hours |
| Essential loads + 1x 1.5 ton AC (3,100W total) | ~9.8 hours |
| Essential loads + 2x 1.5 ton AC (4,500W total) | ~6.7 hours |
| Essential loads + 3x 1.5 ton AC (5,900W total) | ~5.2 hours |
| Full simultaneous load (8,300W) | ~3.7 hours |
For the typical Pakistani load shedding pattern of 4 to 6 hours in the evening, two batteries running two to three ACs covers the outage comfortably with reserve remaining.
For Lahore's LESCO areas with longer outages, three batteries extending backup to 10 hours at two-AC load is the recommended configuration for 1 kanal homes.
Installation Requirements
Wall mounting: The SAJ H2 12kW is wall-mounted with a standard bracket. Install in a shaded, ventilated location away from direct sunlight. A utility room, covered veranda wall or garage wall is ideal. Never install in an enclosed space without airflow as thermal derating reduces output during Karachi's summer heat.
Single phase connection: The SAJ H2 12kW requires a single phase electricity connection. If your property has a three phase meter, the SAJ three phase LT2 series is the appropriate choice.
IP65 outdoor suitability: IP65 protects against dust and water jets from any direction. It is suitable for covered outdoor installation in sheltered locations. For full exposure to monsoon rain or coastal salt air, an IP66 inverter provides a higher protection level.
Karachi coastal consideration: For properties within 5 to 10 kilometres of the Arabian Sea, the IP65 rating provides reasonable protection but the Elego Oyster 10KW with IP66 and NEMA 4X dual certification offers superior long-term corrosion resistance in coastal environments.
Warranty and Support in Pakistan
The SAJ H2 12kW comes with a 5 year standard manufacturer warranty with the option to extend to 10 years. SAJ is one of the world's leading solar inverter manufacturers with products installed in over 100 countries, and a growing service network in Pakistan.
Always purchase from an authorised dealer to ensure your warranty is valid and registerable. MartOnline is an authorised SAJ dealer in Pakistan. Purchase from MartOnline and your warranty is fully backed by the manufacturer.
For warranty claims or technical support, contact MartOnline via WhatsApp and we connect you with the appropriate SAJ service channel for Pakistan.
Price and How to Buy
SAJ H2 12kW price in Pakistan: Rs 365,000
- Free delivery on all orders above Rs 50,000 — all SAJ inverters qualify
- Delivery in 2 to 5 working days across Pakistan
- Genuine SAJ product with full manufacturer warranty
- Technical advice via WhatsApp before and after purchase
View SAJ H2 12kW on MartOnline
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Frequently Asked Questions
Is the SAJ H2 12kW enough for a 1 kanal home in Lahore?
Yes. A 1 kanal home in DHA Lahore, Gulberg, Model Town or Bahria Town running four 1.5 ton ACs has a peak load of approximately 8,750W, which rises to approximately 10,500W with a 20 percent safety margin. The SAJ H2 12kW at 12,000W rated output handles this load comfortably with headroom to spare. If your 1 kanal home runs particularly heavy loads or has additional appliances beyond four ACs, contact MartOnline via WhatsApp for a detailed load assessment before purchasing.
How many ACs can the SAJ H2 12kW run simultaneously?
The SAJ H2 12kW can run three to four 1.5 ton inverter ACs simultaneously alongside full household loads including refrigerator, fans, lights, water pump and washing machine. At 12,000W rated output with a practical load limit of 9,600W (80 percent utilisation), the inverter handles four 1.5 ton ACs at 5,600W combined alongside 2,000W to 3,000W of other household appliances without approaching its limit. For homes running 2 ton ACs, the SAJ H2 12kW handles a 2 ton plus two 1.5 ton combination comfortably.
What battery works best with the SAJ H2 12kW?
The SAJ EK30 B3 16kWh is the plug-and-play pairing for the SAJ H2 12kW. CAN communication between the SAJ inverter and battery ensures automatic charge management with no additional configuration. For homeowners who prioritise the longest possible battery life, the Sunwoda Atrix Max+ 16kWh with 10,000 cycles is the premium choice and fully compatible with the SAJ H2 12kW via RS485 or CAN. For two battery banks, two SAJ EK30 B3 units give 30.4kWh of usable storage — sufficient for overnight backup for most 1 kanal homes.
Can the SAJ H2 12kW work completely off-grid?
Yes. The SAJ H2 12kW fully supports off-grid operation with no connection to LESCO or K-Electric. Combined with three or more 16kWh batteries, it provides complete energy independence for large Pakistani homes in areas with unreliable grid supply. For detailed off-grid system sizing for your property size, read our hybrid solar system guide for Lahore or our off-grid solar system guide for Karachi.
SAJ H2 12kW or SAJ H2 10kW — which should I buy?
If your peak simultaneous load exceeds 8,000W or you run three or more 1.5 ton ACs, the SAJ H2 12kW is the right choice. At Rs 40,000 more than the 10kW, you get 2kW more output, 4kW more solar panel capacity and 40A more battery charging current (240A vs 200A). If your peak load is consistently below 8,000W, the SAJ H2 10kW saves Rs 40,000 without any meaningful performance trade-off for your actual usage. Use our solar calculator or contact MartOnline via WhatsApp for a precise recommendation.
What is the warranty on the SAJ H2 12kW in Pakistan?
The SAJ H2 12kW comes with a 5 year standard manufacturer warranty with an option to extend to 10 years. Purchasing from an authorised dealer like MartOnline ensures your warranty is valid and registerable directly with SAJ. For any warranty claims or technical issues, contact MartOnline via WhatsApp and we coordinate with SAJ's Pakistan service network on your behalf.
Looking for the full SAJ H2 range? Read our reviews of the SAJ H2 6kW, SAJ H2 8kW and SAJ H2 10kW.
Not sure which size is right for your home? Use our free solar calculator for an exact recommendation based on your appliances and load shedding hours.
