Description
xVoltacon BESS 11kW Off Grid Power Cabinet with Pylontech Lithium Batteries
The Voltacon BESS, also known as a Silent Power Cabinet, is a complete plug and play off grid power solution designed for customers who want fast installation, professional integration and long-term reliability.
Built inside an IP65 waterproof industrial cabinet, this all-in-one system combines a powerful single phase 11kW off grid inverter with integrated Pylontech lithium battery storage, manual changeover switch and Solar Assistant online monitoring platform. It is made for homes, farms, workshops, remote buildings and backup power applications where performance, simplicity and safety matter most.
Instead of installing separate batteries, inverter, switchgear and monitoring equipment on site, the Voltacon BESS delivers everything in one engineered enclosure. This reduces wiring time, improves system presentation and helps eliminate installation errors.
Dimensiona : 60cm depth. 100cm width . 210cmm height
Key Features
- 11kW single phase off grid power system
- 24kWh nominal lithium battery storage using 5 x Pylontech US5000C batteries
- 22.8kWh usable energy based on 95% depth of discharge
- IP65 waterproof industrial cabinet for indoor or sheltered outdoor installation
- Plug and play design for faster and cleaner installation
- Manual changeover switch for easy source transfer and maintenance isolation
- Solar Assistant online monitoring platform included
- Integrated inverter, batteries, protection and communications in one cabinet
- Suitable for homes, workshops, cabins, farms and off grid buildings
- Expandable concept based on modular Pylontech battery storage
Built for serious off-grid performance
The heart of the system is the Conversol MAX-II 11kW inverter charger, a high-performance 48V off grid inverter designed for demanding domestic and light commercial applications. It delivers pure sine wave output, dual MPPT solar charging, strong surge capability and intelligent load management in a single compact platform.
Combined with 5 x Pylontech US5000C lithium batteries, the system offers dependable daily cycling, strong long-term performance and advanced BMS protection. This makes the cabinet ideal for users who want reliable energy independence day and night.
Simple installation, professional finish
The Voltacon BESS is engineered to reduce installation complexity. With the core equipment integrated inside one cabinet, the installer only needs to connect the solar PV input, AC load supply and any required backup source according to the final design. This saves time on site and gives a cleaner, more professional result than building a system from separate components.
IP65 waterproof industrial cabinet
The system is assembled in a robust industrial cabinet with IP65 weatherproof protection. This cabinet style improves equipment protection against dust and water ingress and supports dependable operation in more demanding environments. It also provides a tidy and secure enclosure for the inverter, batteries, switchgear and monitoring hardware.
Manual changeover switch included
A built-in manual changeover switch allows straightforward transfer between power sources and supports safer maintenance procedures. This is especially useful where the installation requires user control, backup source selection or simple operational switching.
Solar Assistant monitoring platform
The cabinet includes the Solar Assistant online monitoring platform, giving you improved visibility of battery status, inverter operation, solar production and system performance. This makes remote supervision and fault finding easier for both end users and installers.
Ideal Applications
- Off grid homes
- Remote properties
- Farm buildings and agricultural sites
- Workshops and garages
- Holiday homes and cabins
- Backup power systems
- Technical rooms and essential services loads
Why choose this Voltacon BESS?
- Factory-integrated and easier to install than separate components
- High storage capacity with trusted Pylontech lithium technology
- Powerful 11kW inverter suitable for serious off grid loads
- Strong solar charging performance with dual MPPT inputs
- Better equipment protection with IP65 industrial enclosure
- Clean, professional cabinet build with organised internal layout
- Remote monitoring and easier diagnostics with Solar Assistant
Technical Summary
- System type: Plug and play BESS / Silent Power Cabinet
- Phase: Single phase
- Inverter power: 11kW
- Battery bank: 5 x Pylontech US5000C
- Total nominal storage: 24kWh
- Total usable storage: 22.8kWh
- Battery chemistry: Lithium Iron Phosphate (LFP)
- Cabinet protection: IP65 waterproof enclosure
- Monitoring: Solar Assistant online platform
- Switching: Manual changeover switch included
Specifications
xVoltacon BESS 11kW Off Grid Power Cabinet Technical Specification
System Overview
| Product Type | Battery Energy Storage System (BESS) / Silent Power Cabinet |
| Application | Off grid power supply and backup energy system |
| Phase | Single phase |
| Cabinet Type | Industrial cabinet |
| Cabinet Protection | IP65 waterproof |
| Monitoring | Solar Assistant online monitoring platform |
| Manual Changeover Switch | Included |
Inverter Specifications
| Inverter Model | Conversol MAX-II 11000 |
| Rated Power | 11000VA / 11000W |
| Parallel Capability | Yes, up to 6 units |
| Nominal Input Voltage | 230VAC |
| Selectable Input Voltage Range | 170 to 280VAC for personal computers, 90 to 280VAC for home appliances |
| Frequency Range | 50Hz / 60Hz auto sensing |
| AC Voltage Regulation | 230VAC ± 5% |
| Surge Power | 16000VA |
| Peak Efficiency | 93% |
| Transfer Time | 15ms for personal computers, 20ms for home appliances |
| Waveform | Pure sine wave |
| No Load Power Consumption | < 75W |
| Battery Voltage | 48VDC |
| Floating Charge Voltage | 54VDC |
| Overcharge Protection | 66VDC |
| Solar Charger Type | MPPT |
| Maximum PV Array Power | 11000W total, 5500W x 2 |
| MPPT Operating Voltage Range | 90 to 450VDC |
| Maximum PV Open Circuit Voltage | 500VDC |
| Maximum Solar Charge Current | 150A |
| Maximum AC Charge Current | 150A |
| Maximum Total Charge Current | 150A |
| Communication Interface | USB / RS232 / RS485 / WiFi / Dry-contact |
| Inverter Dimensions | 158.4 x 503.6 x 530.8mm |
| Inverter Weight | 20kg |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
| Humidity | 5% to 95% RH non-condensing |
| Compliance | CE |
Battery Storage Specifications
| Battery Model | Pylontech US5000C |
| Battery Quantity | 5 |
| Battery Chemistry | Lithium Iron Phosphate, LFP |
| Nominal Voltage per Battery | 48V |
| Nominal Capacity per Battery | 100Ah |
| Nominal Energy per Battery | 4.8kWh |
| Usable Energy per Battery | 4.56kWh |
| Total Nominal Energy | 24kWh |
| Total Usable Energy | 22.8kWh |
| Depth of Discharge | 95% |
| Recommended Charge Current per Battery | 80A |
| Charge Voltage | 52.5 to 53.5V |
| Discharge Voltage | 43.5 to 53.5V |
| Communication | RS485 / CAN |
| Dimensions per Battery | 442 x 161 x 420mm |
| Weight per Battery | 39.7kg |
| Total Battery Weight | Approx. 198.5kg |
| Charge Temperature | 0°C to 50°C |
| Discharge Temperature | -10°C to 50°C |
| Battery IP Rating | IP20 |
| Cycle Life | More than 6000 cycles at 25°C |
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.