3.6kW 24V Off Grid Solar Inverter

Are you looking for an off-grid power system that is space-saving, vibration-resistant for vehicle use, easy to install, and highly capable? The GA-3624 weighs just 6.2 kg—lighter than a standard water cooler jug—and has a footprint roughly the size of a sheet of A3 paper. You can tuck it into an RV storage compartment, mount it under the helm of a fishing boat, or hang it on the wooden wall of an outdoor cabin.

3.6KW 24V Off Grid Solar Inverter has enough power to simultaneously run a 1 HP air conditioner (approx. 1000W), a refrigerator (150W), lights and a TV (200W), and charge mobile phones or laptops, while still leaving headroom for small water pumps or power tools. Its 5700VA surge capacity ensures the unit won't shut down due to momentary overloads when compressors start up.

Product Parameter

Why choose this off-grid Solar Inverter?

Weighing only 6.2 kg and featuring a compact design (420×284×94mm), this 3.6kW 24V inverter is easily installed in RVs, boats, utility vehicles, or compact homes. It includes a built-in MPPT solar charger (max. PV input 5000W, charging current 100A) and supports dual AC outputs, BMS communication (CAN/RS485/RS232), lithium battery activation, a detachable dust cover, and WiFi monitoring.

More importantly, its 24V battery system offers distinct advantages for mobile applications: you can recharge the battery directly using the vehicle's existing 24V alternator (ideal for truck or bus conversions) or use two 12V batteries connected in series—a cost-effective and easily accessible solution. Compared to 48V systems, a 24V setup requires fewer battery cells for small-to-medium capacities (5–10 kWh), resulting in lower costs for the BMS and wiring.

Despite its compact size, the GA-3624 delivers up to 100A of PV charging current and 100A of AC charging current. This allows you to quickly charge the battery from 20% to 80%, even with only a few hours of sunlight in the field. It features an MPPT operating voltage range of 40–450V, a maximum PV open-circuit voltage of 500V, and a maximum input power of 5000W. It is compatible with both 24V panels (which require series connection to boost voltage) and standard high-voltage residential panels.

Key Features

1. Ultra-compact and lightweight

Weighing just 6.2 kg and measuring 420×284×94 mm, 3.6KW 24V Off Grid Solar Inverter can be lifted with one hand. It is suitable for installation in tight spaces—such as RV compartments, marine storage lockers, or on the walls of prefabricated cabins—without the need for heavy-duty load-bearing brackets.

2. Optimal 3600W power output, 5700VA surge capacity

With a rated output of 3600W, it covers the essential loads of small-to-medium off-grid households (air conditioner, refrigerator, lighting, and small water pump). Its 5700VA surge capability ensures stable startup for 1 HP compressors or small motors.

3. High-efficiency MPPT solar charging

Features an MPPT voltage range of 40–450V, a maximum PV open-circuit voltage of 500V, and a maximum input power of 5000W. It supports series connections of 3–8 standard PV panels and maintains efficient tracking even in low-light conditions.

4. High-current 100A charging

Supports up to 100A for both PV and AC charging (total charging current of 100A). Rapidly replenishes the 24V battery pack, reducing reliance on generators or sunlight duration.

5. Dual AC outputs

Two independent output channels: one for critical loads (continuous power supply) and another for switchable (non-critical) loads. Load-shedding thresholds can be configured in battery mode to ensure critical equipment operates for longer periods.

6. Comprehensive Battery Compatibility & BMS Communication

Supports 24V lithium batteries (nominal 25.6V) or lead-acid batteries. Float charge voltage is 27V; overcharge protection triggers at 30.5V. Communicates with lithium battery BMS via CAN/RS485 for real-time battery status monitoring.

7. Smart Monitoring & Lithium Battery Activation

Supports remote monitoring via mobile app (with optional WiFi module). Features a built-in lithium battery activation function to wake up battery packs that have entered sleep mode due to over-discharge, eliminating the need for extra equipment.

8. Detachable Dust Cover for Harsh Environments

The front cover is easily removable for cleaning, preventing dust from clogging cooling vents and extending service life in environments such as RVs, farms, and workshops.

Product Applications

1. RV/Camper Power Supply: Lightweight design fits perfectly in RV storage compartments; pairs with roof-mounted solar panels for off-grid power freedom (lighting, refrigerators, air conditioning, phone charging).

2. Fishing Boats or Small Vessels: Provides stable 220V AC power for fish finders, navigation systems, and onboard appliances; the 24V system can be charged directly via marine generators.

3. Remote Cabins/Weekend Getaways: No grid connection required; a few solar panels combined with the GA-3624 unit meet basic electricity needs.

4. Construction Site Temporary Power: Portable power for electric tools, lighting, and two-way radio charging; easily transportable alongside tool carts.

5. Small Farm Equipment: Powers water pumps, feed mixers, and electric fence energizers; 100A charging capability allows for rapid daytime recharging.

6. Emergency Backup Power: Ideal for home use; powers refrigerators, routers, and lights via generator or battery pack during grid outages; lightweight and easy to store.

Customization Available

KTAC offers OEM/ODM services for the GA Series inverter, including:

1. Custom enclosure color and logo printing

2. BMS protocol tuning for third-party batteries

3. Parameter presets (e.g., charge voltages, output frequency)

4. Packaging design and multilingual user manuals

Contact our technical team for a tailored solution.

FAQ

1. Can the GA-3624 be used in parallel?

No. This model is designed for standalone operation and does not support parallel connection of multiple units. If higher power is required, please choose the GA-6548 (6.5kW) or GA-12048 (12kW).

2. Does the 6.2kg weight include all accessories?

The net weight refers to the inverter unit itself; it does not include accessories such as battery cables or the WiFi module. However, the unit is lightweight enough for one person to carry and install easily.

3. Can 3.6KW 24V Off Grid Solar Inverter be installed in an RV engine compartment?

Not recommended. Although the operating temperature range is -15°C to 60°C, engine compartments can exceed 70°C in summer and are subject to oil contamination and excessive vibration. We recommend installing it in a storage locker or a dedicated compartment within the living area, ensuring proper ventilation.

4. Can I use a 12V battery?

No. The rated battery voltage for the GA-3624 is 24V. If you only have 12V batteries, please choose the GA-1212 model (1200W, 12V system).

5. With a maximum PV input of 5000W, why is the charging current only 100A?

Since the battery-side voltage is 24V, the charging power is approximately 100A × 25.6V = 2560W; the remaining PV power can be used for loads or may not be fully utilized (due to charging circuit design limitations). In practical application, a 5000W PV input ensures sufficient headroom even on cloudy days or in winter. If higher charging efficiency is desired, consider using a higher battery voltage (e.g., switching to a 48V model). 

6. Can the 3.6kW 24V off-grid Solar Inverter be used simultaneously with a 24V vehicle generator?

Yes. You can connect the vehicle generator's DC output to the battery terminals (using a suitable isolator) or connect the generator's 220V output to the GA-3624's AC input port. Please consult a professional electrician for specific wiring instructions.

7. How can I enable remote monitoring via mobile phone?

Purchase the optional WiFi module, plug it into the designated port on the inverter, connect it to your home or vehicle WiFi network according to the instructions, and then register the device in the official KTAC app. No static IP is required; the system supports real-time monitoring and push notifications for alerts.

8. Does the 3.6KW 24V Off Grid Solar Inverter support 48V batteries?

No. The GA-3624 is designed for a 24V battery system; connecting it directly to a 48V system will damage the unit. If you require a 48V system, please choose the GA-6548 or GA-12048 model.