Description
xConversol Max 11kW Off-Grid Solar Inverter Charger | 48V | MPPT | Wi-Fi | Parallel
The Conversol Max 11kW is the largest single-phase off-grid solar inverter in the Voltacon range. 11kW continuous pure sine wave AC output, 11kW PV input via dual MPPT, battery-independent operation, built-in Wi-Fi, RGB status indicator, and parallel-ready for up to 6 units. Compatible with lead-acid, GEL, lithium-ion, and LiFePO4 batteries. BMS communication ports pre-installed. Suitable for large properties, workshops, farms, and commercial off-grid installations.
Key Features
- 11kW continuous pure sine wave AC output
- 11kW PV input via dual independent MPPT
- 48V DC battery input: compatible with lead-acid (AGM, GEL, flooded, forklift), lithium-ion, and LiFePO4
- Battery-independent operation: requires 8-10 panels in series for direct solar-to-load operation
- BMS communication ports pre-installed for lithium battery management
- Built-in Wi-Fi for mobile monitoring (Android and iOS)
- RGB LED status indicator
- USB On-the-Go function
- Easy-replace cooling fans and dust filters
- Parallel operation: up to 6 units (66kW single-phase or three-phase configuration)
- Grid or generator backup when battery voltage drops and solar is insufficient
- Configurable AC/PV output priority with timer scheduling
- Suitable for EV charging, heat pumps, and other high-power loads at 230V
Product Overview
The Conversol Max 11kW is designed for off-grid electrification where AC loads can reach or exceed 11kW continuously. This covers large residential properties with significant appliance loads, agricultural sites with water pumps, air compressors or refrigeration, and light commercial and industrial off-grid installations.
The parallel function and communication hardware are pre-installed, meaning multiple units can be connected in parallel to scale to three-phase or higher single-phase output without purchasing additional interface hardware. When one unit in a parallel array fails, the remaining units continue supplying power, giving the system inherent redundancy.
The battery-independent design allows the inverter to supply loads directly from the solar array without a battery bank connected, provided the PV string voltage is high enough. A minimum of 8 to 10 panels in series is recommended for this mode of operation.
For 0% VAT supply and installation enquiries, please contact us.
Technical Specifications
| Parameter | Value |
| Rated Output Power | 11,000W (11kW) pure sine wave |
| Max PV Input Power | 11,000W (dual MPPT) |
| Battery Voltage | 48V DC |
| Battery Compatibility | Lead-acid (AGM, GEL, flooded, forklift), lithium-ion, LiFePO4 |
| Battery Independent | Yes (8-10 panels in series minimum) |
| Parallel Units | Up to 6 (66kW total) |
| Communications | Wi-Fi, USB OTG, BMS RS485/CAN |
| SKU | 002136 |
Applications
- Large off-grid residential properties and farms
- Agricultural and industrial sites with high continuous AC load requirements
- Off-grid EV charging, heat pump, and air conditioning installations
- Scalable systems requiring redundancy via parallel operation
Installation and Safety Notes
Must be designed and installed by a qualified electrician or solar installer. At 11kW, correct cable sizing, busbar ratings, fusing, DC and AC isolators, surge protection, and earthing are critical. Battery systems must comply with BS EN 62619 and local building regulations. Do not attempt DIY installation of high-power off-grid inverter systems.
Specifications
x| MODEL | Axpert MAX E-11000 |
| Rated Inverter Power | 11000VA/11000W |
| PARALLEL CAPABILITY | YES, 6 units |
| INPUT | |
| Voltage | 230 VAC |
| Selectable Voltage Range | 170-280 VAC (For Computers) / 90-280 VAC (For Home Appliances) |
| Frequency Range | 50 Hz/60 Hz (Auto sensing) |
| OUTPUT | |
| AC Voltage Regulation (Batt. Mode) | 230VAC ± 5% |
| Surge Power | 22000VA |
| Efficiency (Peak) | 93% |
| Transfer Time | 10 ms (Personal Computers) / 20 ms (Home Appliances) |
| Waveform | Pure sine wave |
| No Load Power Consumption | <70W |
| Dual Outputs | YES |
| BATTERY | |
| Battery Voltage | 48 VDC |
| Floating Charge Voltage | 54 VDC |
| Overcharge Protection | 63 VDC |
| SOLAR CHARGER & AC CHARGER | |
| Solar Charger type | MPPT |
| Maximum PV Array Power | 11000W |
| MPPT Range @ Operating Voltage | 90 ~ 450 VDC |
| Maximum PV Array Open Circuit Voltage | 500 VDC |
| Maximum Solar Charge Current | 150A |
| Maximum AC Charge Current | 150A |
| Maximum Charge Current | 150A |
| PHYSICAL | |
| Dimension, D X W X H (mm) | 147.4 x 432.5 x 553.6 |
| Net Weight (kgs) | 18.4 |
| Communication Interface | USB/RS232/RS485/WiFi/Dry-contact |
| OPERATING ENVIRONMENT | |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
| Humidity | 5% to 95% RH (Non-condensing) |
| Compliance | CE |
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.
If you would like to arrange a return, please check the footer of the website and click on "Returns" or click here
Customer Reviews
xCustomer Reviews
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During the energy crisis of 2022 I started looking at solar as my electricity bill was just under £500 per month 9 inclusive of charging an electric car with a 17kw battery) . I researched many options but decided on diy. I met with great resistance from my local council who directed me to the national grid for my planned install. The short version - these inverters do not require G98 or G99, or MCS approval as they are not able to feed back to the grid. Working in industry and being responsible for some very large lead acid battery charging installations, I designed a system to charge and store cheap electricity overnight using lead acid batteries, and with a duty and standby system. This system has run 24/7 since January 2023, I have not as yet installed solar panels as charging batteries for £0.07 per Kw for 45kw power day usage equates to approximately £95 per month.if you do the sums the install cost me just over £5k (that includes 4off 24v 610amp lead aci batteries which I obtained for a good price) the payback was in little over 13 months- it puts a smile on my face every day when I go out to work. The inverters used are the Voltacon 11kW units mounted in parallel to give 22kw capacity for high loads. They will also default to duty and standby should one fail, the inverters are well built, have a good user defined range of options and the ability to select multiple sources. The support from Voltacon has been excellent and Steve is very knowledgeable on this subject
