Description
xVoltasol ESS 5.5kW Hybrid Inverter | 48V | Pylontech BMS | On-Grid and Off-Grid
The Voltasol ESS 5500W is a single-phase hybrid inverter and battery charger designed specifically for energy storage systems with Pylontech lithium batteries. 5.5kW continuous output, 100A solar charger, BMS compatible with Pylontech US3000C and US5000C (and legacy US2000C), with energy meter and Modbus card pre-installed. Manufactured and supported by Voltacon.
Key Features
- 5500W continuous single-phase output: higher than the 3600W limit of many comparable hybrid inverters
- BMS compatible with Pylontech US3000C, US5000C, and legacy US2000C batteries
- Enhanced 100A AC and solar charger
- Scalable lithium battery expansion: add Pylontech modules as needed
- Pure sine wave output
- Programmable supply priority: PV, Battery, or Grid
- Programmable operating modes: grid-tie, off-grid, grid-tie with backup
- Export adjustable from 0W to 5500W
- Timer charger: schedule grid charging at economy tariff rates
- Multiple communications: USB, RS232, Modbus, SNMP, GPRS, Wi-Fi
- Energy meter and Modbus card pre-installed
Product Overview
The Voltasol ESS platform is designed around efficient integration with Pylontech lithium battery banks. The pre-installed BMS communication cards handle battery management automatically, adjusting charge and discharge parameters to protect cell health and maximise battery cycle life.
The 5.5kW continuous output is a practical advantage over hybrid inverters limited to 3.6kW, as it can supply heavier domestic loads such as electric showers, ovens, and heat pumps directly from solar and battery without being restricted by inverter capacity.
Export control is fully adjustable. If the property has no export agreement or the DNO requires zero export, the inverter can be configured to stop at 0W. Where export is permitted, the level can be set to any value up to the full 5500W.
For 0% VAT supply and installation enquiries, please contact us.
Operating Modes
- Off-grid with grid as backup source
- Hybrid: inverter and grid supply AC loads simultaneously
- Export to grid: adjustable from 0W to 5500W
- Split supply: AC loads on grid plus critical loads off-grid, combined 5.5kW capacity
- Timer charging: scheduled AC charging from grid at low-tariff periods
Technical Specifications
| Parameter | Value |
| Rated Output Power | 5500W (5.5kW) single-phase |
| Battery Voltage | 48V DC |
| Solar and AC Charger | 100A |
| Battery Compatibility | Pylontech US3000C, US5000C (legacy US2000C), lead-acid |
| Output Waveform | Pure sine wave |
| Export Control | 0W to 5500W adjustable |
| Communications | USB, RS232, Modbus, SNMP, GPRS, Wi-Fi |
| Included Accessories | Energy meter, Modbus card (pre-installed), BMS communication cards |
| SKU | 002257 |
Applications
- Residential energy storage systems with Pylontech lithium batteries
- Self-consumption systems with higher continuous load requirements
- On-grid with battery backup and export control
- Off-grid residential and agricultural single-phase installations
Installation and Safety Notes
Must be installed by a qualified electrician or MCS-accredited solar installer. Battery systems must comply with BS EN 62619 and local building regulations. Correct cable sizing, fusing, DC and AC isolators, and earthing are essential. Grid connection requires G98 notification or G99 application. Do not attempt DIY installation of hybrid inverter and battery systems.
Specifications
x| MODEL | ESS 5.5KW |
| Maximum PV Input Power | 6500 W |
| Rated Output Power | 5500 W |
| Maximum Charging Power | 2880 W |
| PV INPUT (DC) | |
| Nominal DC Voltage / Maximum DC Voltage | 360 VDC / 500 VDC |
| Start-up Voltage / Initial Feeding Voltage | 116 VDC / 150 VDC |
| MPP Voltage Range | 120 VDC ~ 450 VDC |
| Number of MPP Trackers / Maximum Input Current | 2 / 2 x 13 A |
| GRID OUTPUT | |
| Nominal Output Voltage | 208/220/230/240 VAC |
| Max. Output Current | 23.9A |
| Maximum Conversion Efficiency (DC/AC) | 96% |
| European Efficiency | 95% |
| BATTERY & CHARGER | |
| Nominal DC Voltage | 48 VDC |
| Maximum Charging Current | 100 A |
| PHYSICAL | |
| Dimension, D X W X H (mm) | 214 x 621 x 500 |
| Net Weight (kgs) | 25 |
| IEC/EN 62109-1/-2, IEC 62040-1, IEC 61727, IEC 62116, G99, EN 50549-1 | |
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.