SAJ 16kWh Battery — Complete Review 2026

The SAJ 16kWh Low Voltage Battery is manufactured by Guangzhou Sanjing Electric Co., Ltd. — the same company behind the SAJ H2 inverter series, one of the most widely installed hybrid solar inverters in Pakistan. At Rs 580,000 from MartOnline, it is the most affordable 16kWh LiFePO4 battery in our catalogue, and its plug-and-play CAN communication with SAJ H2 inverters makes it the natural battery choice for anyone who already owns or plans to buy a SAJ inverter.

This review covers everything a Pakistani buyer needs before spending Rs 580,000 on a battery — full specifications from the official SAJ datasheet V1.0-20260710, real backup hour calculations based on typical Pakistani household loads, and an honest three-way comparison with the Mesol 16kWh Infiniti and Sunwoda Atrix Max+. Every number in this review comes from a verified source. Nothing is estimated.

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What Is the SAJ 16kWh

The SAJ 16kWh is a deep cycle, high capacity LiFePO4 battery from the SAJ elekeeper battery series. It is manufactured by Guangzhou Sanjing Electric Co., Ltd., the same company that produces the SAJ H2 hybrid inverter range sold across Pakistan, India and Southeast Asia.

The SAJ 16kWh is SAJ's current residential battery product as of the V1.0-20260710 datasheet release. It replaces and supersedes earlier SAJ battery models. If you are shopping for a SAJ battery in Pakistan, the SAJ 16kWh is the model to look for on your quotation and delivery paperwork.

The battery is designed for household electricity demand — residential backup, hybrid solar systems and off-grid applications. Its plug-and-play CAN integration with SAJ inverters eliminates the manual parameter configuration required when pairing a third-party battery with a SAJ inverter, making it the zero-effort choice for SAJ H2 owners.

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Full Technical Specifications

All specifications below are taken directly from the official SAJ Electric datasheet V1.0-20260710.

Source: SAJ Electric official datasheet V1.0-20260710, Guangzhou Sanjing Electric Co., Ltd.

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Six Features That Matter in Pakistan

1. Plug and play with SAJ H2 inverters

The SAJ 16kWh uses CAN communication that integrates directly with all SAJ H2 series inverters — the 6kW, 8kW, 10kW and 12kW single phase models and the three phase LT2 series. When you connect the battery via the CAN cable, the inverter automatically detects the battery model, reads its state of charge, applies the correct charge curves and manages the BMS communication without any manual setup. For non-technical buyers who want a working system without configuration complexity, this plug-and-play pairing is the most practical advantage of the SAJ 16kWh.

2. 15.2kWh usable capacity — explicitly confirmed

Most battery brands state total energy (16kWh) and leave buyers to estimate usable capacity. The SAJ 16kWh datasheet explicitly states usable energy as 15.2kWh and recommends 95% depth of discharge. This means 15.2kWh is the guaranteed usable figure, not a calculation. For backup hour estimates, 15.2kWh is the correct number to use.

3. IP65 — outdoor and indoor installation

IP65 certifies the battery as dust-tight and protected against water jets from any direction. The SAJ 16kWh datasheet specifies outdoor and indoor installation, making it one of the few 16kWh LV batteries in Pakistan rated for outdoor installation. For properties where an indoor utility room is not available, or where the battery must be installed in a covered outdoor location, IP65 gives meaningful protection that an unrated or IP20 battery cannot.

4. Built-in fire protection module

The SAJ 16kWh includes a built-in fire protection module as part of its LFP improved safety design, listed explicitly on the official datasheet. LiFePO4 chemistry is inherently safer than other lithium chemistries, but the additional hardware fire protection module provides a further layer of safety for a battery installed in a residential home. The integrated DC breaker provides automatic circuit protection without requiring an external breaker on the battery circuit.

5. ≥8,000 cycle life — highest confirmed figure

The SAJ 16kWh is rated for ≥8,000 cycles at 90% DOD, 25°C ambient temperature and 0.2C discharge rate. This is the highest confirmed cycle life figure among 16kWh batteries available from MartOnline as of October 2026. At one full cycle per day — the typical pattern for a Pakistani home with daily load shedding — 8,000 cycles represents approximately 21 years of daily use. The Mesol 16kWh is rated at 6,000+ cycles and the Sunwoda Atrix Max+ at 10,000 cycles.

6. Real-time monitoring and remote upgrade

The SAJ 16kWh supports real-time monitoring through the SAJ eSAJ platform, the same app used to monitor SAJ H2 inverters. Battery state of charge, charge and discharge history and fault alerts are visible in the same interface as your inverter data. Remote firmware upgrades are available, meaning SAJ can push battery BMS improvements over the air without a physical service visit.

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The 8kW Charge / 10kW Discharge Asymmetry

One specification that deserves a dedicated explanation is the asymmetric charge and discharge power rating of the SAJ 16kWh.

Charge power: 8kW At 157A maximum charging current and 51.2V nominal voltage: 157 × 51.2 = 8,038W, confirming the 8kW charge power rating.

Discharge power: 10kW At 200A maximum continuous discharge current and 51.2V: 200 × 51.2 = 10,240W, confirming the 10kW discharge power rating.

What this means in practice:

If you have a SAJ H2 10kW or 12kW inverter, your inverter can accept up to 10kW to 12kW of solar input and deliver up to 10kW to 12kW of output. However the SAJ 16kWh can only charge at 8kW. This means the battery charges at 8kW even when the inverter is capable of charging at a higher rate.

For most Pakistani homes this is not a problem. An 8kW charge rate fills the battery from 20 percent to full in approximately 100 minutes under peak solar conditions — fast enough to fully recharge between any two load shedding windows during a normal day.

Peak discharge for startup surges:

The 300A peak discharge for 10 seconds (300 × 51.2 = 15,360W) handles the startup surge current of large AC compressors. When a 2 ton AC compressor starts up, it briefly draws 3 to 5 times its running current. The 300A peak rating ensures the battery can supply this startup surge without the BMS tripping — a common failure point in batteries without adequate peak ratings.

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Who Is the SAJ 16kWh For

Ideal for:

• SAJ H2 inverter owners wanting plug-and-play battery pairing
• Buyers prioritising the longest confirmed cycle life at the lowest price point
• Properties needing outdoor battery installation — IP65 makes this possible
• Homes running 4 to 8 hour load shedding backup with one or two ACs
• Off-grid systems where deep cycling is daily and cycle life determines ROI

Consider the Mesol 16kWh Infiniti instead if:

• You are using a GoodWe or Crown Micro inverter and need RS485 compatibility
• Your system design requires RS485 protocol specifically
• Pakistan-specific support network is the priority

Consider the Sunwoda Atrix Max+ 16kWh instead if:

• Maximum cycle life is the priority — Sunwoda offers 10,000 cycles vs 8,000+ on the SAJ
• You need to parallel more than 16 units — Sunwoda supports up to 32 units
• Built-in casters for easy repositioning are important for your installation

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How Much Backup Will You Get

The following backup calculations use 15.2kWh as the usable capacity, as confirmed on the official SAJ 16kWh datasheet.

Single battery — 15.2kWh usable:

Two batteries in parallel — 30.4kWh usable:

Calculations: usable capacity ÷ load in kW = hours. Actual duration varies with inverter efficiency (typically 95 to 97%) and temperature.

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Compatible Inverters

SAJ inverters — plug and play via CAN:

Non-SAJ inverters — CAN protocol:

The SAJ 16kWh communicates via CAN only — it does not support RS485. Most modern hybrid inverters support CAN battery communication, but confirm CAN compatibility with your specific inverter model before purchasing.

• GoodWe ES Uniq series: CAN compatible ✅
• GoodWe ET LV series: CAN compatible ✅
• Crown Micro Elego Oyster: CAN compatible ✅

For inverters that require RS485 battery communication only, the Mesol 16kWh Infiniti supports both RS485 and CAN.

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SAJ 16kWh vs Mesol 16kWh — Which Should You Buy

Choose SAJ 16kWh if: You own a SAJ H2 inverter, you want outdoor-capable IP65 installation, or the higher confirmed cycle life at a lower price is the deciding factor.

Choose Mesol if: You need RS485 compatibility, you are using a non-SAJ inverter that does not support CAN, or wider protocol support is important.

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SAJ 16kWh vs Sunwoda Atrix Max+ — Which Should You Buy

Choose SAJ 16kWh if: Budget is the priority, you need outdoor IP65 installation, or you want the built-in fire protection module.

Choose Sunwoda if: Maximum cycle life over the long term is the priority, you plan to scale beyond 16 batteries in parallel, or built-in casters make installation significantly easier.

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Three-Way Battery Comparison

Quick decision guide:

• Cheapest with best confirmed cycles: SAJ 16kWh
• SAJ H2 inverter owner: SAJ 16kWh — plug and play
• Need outdoor installation: SAJ 16kWh — only IP65 rated option
• Maximum lifespan (10,000 cycles): Sunwoda Atrix Max+
• Scale beyond 16 units: Sunwoda Atrix Max+
• Need RS485: Mesol or Sunwoda

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How Many Batteries Do You Need

Hybrid system (4 to 8 hour backup):

Off-grid system (14-hour overnight coverage):

Use our free solar calculator for a precise recommendation based on your specific appliances and daily usage hours.

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IP65 — Outdoor Installation Advantage

The SAJ 16kWh is rated IP65 and specified for outdoor and indoor installation on the official datasheet. This is a meaningful practical advantage in Pakistani homes where an indoor utility room near the inverter is not always available.

Where outdoor IP65 installation is relevant in Pakistan:

• Properties where the inverter is mounted on an exterior wall under a canopy or pergola
• Homes where the battery must be placed in a covered courtyard or veranda
• Rural properties without a dedicated indoor utility room
• Properties where the battery must be placed adjacent to an outdoor inverter

IP65 protects against dust ingress completely and against water jets from any direction. For Karachi properties exposed to monsoon rain, and for all Pakistani properties where dust is a year-round concern, IP65 provides meaningful hardware protection beyond what an unrated indoor-only battery offers.

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Installation and Safety

Weight and floor requirements:

At 110 kg, the SAJ 16kWh requires a solid floor surface capable of supporting this load. The landed installation design means it stands on its base directly on the floor — no wall bracket required. Confirm your installation floor can support 110 kg before delivery.

Built-in DC breaker:

The SAJ 16kWh includes an integrated DC breaker, which is listed explicitly on the datasheet under protection features. This eliminates the need for a separate external DC breaker on the battery circuit, reducing installation complexity and cost.

Natural cooling — silent operation:

The SAJ 16kWh uses natural convection cooling with no fan. It operates silently throughout the charge and discharge cycle. This makes it suitable for installation in living areas or bedrooms where fan noise from a forced-air-cooled battery would be disruptive.

LiFePO4 safety:

LiFePO4 is the safest lithium battery chemistry for residential use. It does not enter thermal runaway under normal fault conditions and does not catch fire or produce toxic gases when overcharged within BMS protection limits. The additional built-in fire protection module in the SAJ 16kWh provides a further hardware layer beyond the chemistry's inherent safety.

Earthing:

Earthing of the battery bank is mandatory for safe operation and is verified as part of NEPRA net metering approval. Insist on a verified earth connection before commissioning.

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Warranty and Certifications

The SAJ 16kWh carries a 5 year standard manufacturer warranty with an option to extend to 10 years. Certifications confirmed on the official datasheet include IEC 62619 (lithium battery safety for stationary applications), IEC62040, IEC61000 and UN38.3 (transport safety).

SAJ Electric — Guangzhou Sanjing Electric Co., Ltd. — is one of China's leading solar inverter and battery manufacturers with products installed across more than 100 countries. Purchasing from an authorised dealer ensures your warranty is registered and valid with SAJ Electric. MartOnline is an authorised SAJ dealer in Pakistan and handles warranty coordination directly for all SAJ products purchased through us.

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Price and How to Buy

SAJ 16kWh battery price in Pakistan: Rs 580,000 as of October 2026.

• Free delivery on all orders above Rs 50,000 — the SAJ 16kWh qualifies
• Delivery in 2 to 5 working days across Pakistan
• Genuine SAJ product with full manufacturer warranty
• Technical advice before and after purchase via WhatsApp

View SAJ 16kWh on MartOnline

WhatsApp us for a system quote

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Frequently Asked Questions

What is the SAJ 16kWh battery price in Pakistan?

The SAJ 16kWh Low Voltage Battery price in Pakistan is Rs 580,000 from MartOnline as of October 2026, including free delivery across Pakistan. This makes it the most affordable 16kWh LiFePO4 battery in MartOnline's catalogue, Rs 20,000 less than the Sunwoda Atrix Max+ and Rs 55,000 less than the Mesol 16kWh Infiniti.

Is the SAJ 16kWh compatible with GoodWe inverters?

Yes. The SAJ 16kWh communicates via CAN protocol, which is supported by GoodWe ES Uniq single phase and GoodWe ET LV three phase inverters. Confirm CAN battery communication support with your specific GoodWe model before purchase. Note that the SAJ 16kWh does not support RS485 — it is CAN only. If your inverter requires RS485 battery communication, the Mesol 16kWh Infiniti supports both RS485 and CAN.

How many hours backup does the SAJ 16kWh give for a 10 marla home in Lahore?

A typical 10 marla home in Lahore running two 1.5 ton inverter ACs draws approximately 5,500W simultaneously including fans, lights and refrigerator. With one SAJ 16kWh at 15.2kWh usable capacity, backup duration at this load is approximately 2.8 hours. For the 6 to 8 hours of load shedding common in many Lahore areas, two SAJ 16kWh batteries in parallel providing 30.4kWh usable are recommended, giving approximately 5.5 hours of backup at the same two-AC load.

SAJ 16kWh vs Mesol 16kWh — which is better for Pakistan?

The SAJ 16kWh is better if you own a SAJ H2 inverter, need outdoor IP65 installation, or want the highest confirmed cycle life at the lowest price. The SAJ 16kWh is rated at ≥8,000 cycles versus 6,000+ on the Mesol, and costs Rs 55,000 less. The Mesol 16kWh is better if you need RS485 protocol support or are using a non-CAN inverter. For most SAJ H2 inverter owners in Pakistan, the SAJ 16kWh is the superior choice both technically and financially.

Can I add more SAJ 16kWh batteries to my system later?

Yes. Up to 16 SAJ 16kWh units can be connected in parallel, providing a maximum combined storage of 256kWh. Adding batteries later is straightforward — connect the additional units in parallel and update the battery quantity setting in your SAJ inverter. The plug-and-play CAN communication auto-configures for the new battery bank capacity. Starting with one battery and adding more as your needs or budget grow is a common and well-supported approach for SAJ systems.

What is the confirmed cycle life of the SAJ 16kWh?

The SAJ 16kWh is rated for ≥8,000 cycles at 90% depth of discharge, 25°C ambient temperature and 0.2C discharge rate, as stated on the official SAJ Electric datasheet V1.0-20260710. At one full charge-discharge cycle per day — typical for a Pakistani home with daily load shedding — 8,000 cycles represents approximately 21 years of daily use. This is the highest confirmed cycle life figure among 16kWh LV batteries available from MartOnline as of October 2026.

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Looking for compatible SAJ inverters? Read our reviews: SAJ H2 6kW | SAJ H2 8kW | SAJ H2 10kW | SAJ H2 12kW

Compare all 16kWh batteries: SAJ 16kWh | Sunwoda Atrix Max+ | Mesol 16kWh Infiniti

Not sure how many batteries you need? Use our free solar calculator or contact MartOnline via WhatsApp at 0324-3493060.