Description
xConversol Max-II 11kW Off-Grid Inverter and MPPT Charger 48V Twin Output
The Conversol Max-II is an 11kW off-grid inverter, solar charger, and battery charger in a single unit. Built around a dual MPPT design with 5500W per controller and 27A PV input current, it handles both smaller string configurations and larger 660W modules. With twin AC outputs, built-in Wi-Fi, and broad lithium battery compatibility, it is a strong choice for demanding off-grid and hybrid residential or light commercial systems.
Key Features
- 11000VA / 11000W rated output
- Pure sine wave output
- Dual MPPT solar charger, 5500W per tracker, 500VDC max PV input
- MPPT range: 90 to 450VDC
- Maximum solar charge current: 150A
- Maximum AC charge current: 150A
- Twin AC outputs for smart load management
- Compatible with Pylontech, WECO, and Soltaro lithium batteries (LIB, LIC, PYL protocols)
- Also compatible with AGM and lead-acid batteries
- Built-in Wi-Fi for remote monitoring
- 5-inch colour LCD touchscreen
- RS485, CAN-BUS, and RS232 BMS communication ports
- Configurable charge source priority and output timer
- Replaceable cooling fans
- Parallel operation up to 6 units
- CE certified
Product Overview
The Max-II operates at 48VDC battery voltage with a floating charge voltage of 54VDC. In inverter mode it delivers 93% peak efficiency with a 16,000VA surge capacity. The 15ms transfer time for PC-grade loads and 20ms for home appliances ensures continuity during mains outages or generator switching.
The dual output configuration allows the user to assign loads to different circuits, giving priority power to critical equipment while managing secondary loads separately. This is particularly useful in off-grid installations where battery capacity needs to be managed carefully.
The built-in anti-dust kit protects internal components in environments where airborne particles are a concern, extending the service life of the inverter without requiring frequent manual cleaning.
Applications
- Residential and light commercial off-grid solar power systems
- Hybrid installations with lithium or lead-acid battery storage
- Backup power systems for homes and small businesses
- Three phase systems when used in parallel configuration
Installation and Safety Notes
This inverter must be installed by a qualified electrician or solar installer. Battery wiring, DC fusing, earthing, and ventilation must comply with the manufacturer's guidelines and IET Wiring Regulations. Lithium battery BMS communication must be correctly configured before operation. Do not attempt DIY installation of inverter or battery systems.
Specifications
x| Parameter | Value |
| Model | Conversol MAX II 11000 |
| Rated Power | 11000VA / 11000W |
| Parallel Capability | Yes, up to 6 units |
| Input Voltage | 230 VAC |
| Selectable Voltage Range | 170–280 VAC (computers) / 90–280 VAC (appliances) |
| Frequency Range | 50 Hz / 60 Hz (auto sensing) |
| Output Waveform | Pure sine wave |
| AC Voltage Regulation (Battery Mode) | 230 VAC ±5% |
| Surge Power | 16000 VA |
| Peak Efficiency | 93% |
| Transfer Time | 15 ms (computers) / 20 ms (appliances) |
| No-Load Power Consumption | <75 W |
| Battery Voltage | 48 VDC |
| Floating Charge Voltage | 54 VDC |
| Overcharge Protection | 66 VDC |
| Solar Charger Type | MPPT |
| Maximum PV Array Power | 11000 W (2 x 5500 W) |
| MPPT Range | 90–450 VDC |
| Maximum PV Open Circuit Voltage | 500 VDC |
| Maximum Solar Charge Current | 150 A |
| Maximum AC Charge Current | 150 A |
| Communication Interface | USB / RS232 / RS485 / Wi-Fi / Dry-contact |
| Dimensions (D x W x H) | 158.4 x 503.6 x 530.8 mm |
| Net Weight | 20 kg |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
| Humidity | 5–95% 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:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- 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.