Description
xSolis 3kW AC Coupled Inverter and Charger for Energy Storage – S5-EA1P3K-L
The Solis S5-EA1P3K-L is a 3kW single phase AC coupled inverter designed to add battery storage to an existing grid-tied solar PV system or to charge batteries directly from the mains grid. It does not require solar panels to operate and works with both lithium-ion and lead-acid batteries. A CT current transformer is included for managing grid power flow.
Key Features
- 3kW single phase AC coupled inverter and battery charger
- Works with any existing grid-tied PV system for energy storage upgrading
- Compatible with lithium-ion and lead-acid batteries (40–60V, 50–2000Ah)
- Max charge/discharge current: 60A
- CAN communication for lithium battery BMS
- Multiple operating modes for different application scenarios
- Natural convection cooling, no external fan
- Intelligent commissioning app with one-click inverter configuration
- CT current transformer included
- G98/G99 compliant for UK grid connection
- Dimensions: 405 x 510 x 150mm, weight: 12.1kg
Product Overview
The S5-EA1P3K-L allows homeowners and businesses with an existing grid-tied solar installation to add battery storage without replacing their current inverter. It connects on the AC side of the existing system, charging the battery from solar generation or from the grid on an off-peak tariff, and discharging to supply loads during peak periods or during a grid outage.
For properties without solar panels, the inverter can charge the battery bank purely from the mains at a low-cost overnight tariff and discharge during peak hours, reducing electricity costs with no PV installation required. Solar panels can be added at any time.
The unit operates using natural convection cooling with no external fan, reducing noise and removing a common source of mechanical failure in inverter-chargers.
Applications
- Adding battery storage to an existing grid-tied solar PV system
- Off-peak tariff charging and peak-hour discharge without solar panels
- Self-consumption and backup power for residential and commercial properties
- AC coupling with any brand of existing grid-tied inverter
Installation and Safety Notes
This inverter must be installed by a qualified electrician or MCS-accredited solar installer. G98 or G99 notification and DNO approval must be obtained before connection to the grid. AC wiring, battery connections, and earthing must comply with IET Wiring Regulations and the Solis installation manual. CAN communication between inverter and lithium battery BMS must be correctly configured before operation.
Specifications
x| Parameter | Value |
| Model | Solis S5-EA1P3K-L |
| Rated Output Power | 3 kW |
| Max Apparent Output Power | 3 kVA |
| Operation Phase | 1/N/PE (single phase) |
| Rated Grid Voltage | 220 V / 230 V |
| Grid Voltage Range | 184–264 V |
| Rated Grid Frequency | 50 Hz / 60 Hz |
| Rated Grid Output Current | 13.6 A / 13 A |
| Max Output Current | 20 A |
| Power Factor | >0.99 (0.8 leading to 0.8 lagging) |
| THDi | <3% |
| Battery Type | Li-ion or lead-acid |
| Battery Voltage Range | 40–60 V |
| Battery Capacity Range | 50–2000 Ah |
| Max Charge / Discharge Current | 60 A |
| Battery Communication | CAN |
| Max Battery Charge Efficiency | 94.0% |
| Max Battery Discharge Efficiency | 94.5% |
| Dimensions | 405 x 510 x 150 mm |
| Weight | 12.1 kg |
| Grid Connection Standard | G98/G99 (UK), VDE-AR-N 4105, EN 50549-1 and others |
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.