Checked as a bank of 2 packs, which is the smallest number that accepts this inverter’s 105 amp charge current. Fewer packs still run the system, with the charge rate capped in inverter settings.
Full specifications: Schneider Conext SW 4048 and EG4 LifePower4 48V 100Ah.
The four checks
Voltage window: Overlapping window 44.8 to 58.4 V
The inverter operates from 44 to 64 volts and the battery cuts off outside 44.8 to 58.4 volts. Both stay inside 44.8 to 58.4 volts, which covers a normal LiFePO4 charge and discharge cycle with margin at both ends.
Charge current: 105 A into a 200 A limit
The inverter tops out at 105 amps and the battery accepts 200 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.
Surge rating: 400 A surge for 5 s against a 142 A peak
The inverter surges to 6800 watts, about 142 amps at 48 volts, and the battery is rated for 400 amps for 5 s. A compressor or well pump start has room inside that rating. Compare the durations as well as the amps, because the ratings are only equivalent if the pack can hold its figure as long as the inverter holds its own.
Closed-loop communication: No shared protocol
The inverter speaks Modbus and the battery speaks CAN, RS485. There is no common protocol between them, so closed-loop operation is off the table regardless of cabling.
What this means when you install it
Set the inverter charge current to 105 amps or less. That is the inverter maximum, which this bank can absorb. Protect the battery run with a 100 amp Class T fuse and 2 AWG cable wired to a busbar rather than daisy chained, so all 2 packs share current evenly.
The inverter speaks Modbus and the battery speaks CAN, RS485. There is no common protocol between them, so closed-loop operation is off the table regardless of cabling.
Figures side by side
| Field | Schneider Conext SW 4048 | EG4 LifePower4 48V 100Ah |
|---|---|---|
| Voltage window | 44 to 64 V | 44.8 to 58.4 V |
| Charge current | 105 A delivered | 200 A accepted (2 packs) |
| Peak draw | 6,800 W surge | 400 A surge (2 packs) |
| Usable capacity | n/a | 10.24 kWh (2 packs) |
| Comms | Modbus | CAN, RS485 |
Manufacturer documents
Schneider has no public document library this site has been able to verify. Every figure on this page therefore needs checking against the paperwork that shipped with your unit.
Manufacturer documents: EG4 product and document library. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Both units, current pricing
Prices on these move week to week, and the battery is usually the line item worth watching.
Schneider Conext SW 4048 on AmazonEG4 LifePower4 48V 100Ah on AmazonComms cableAffiliate links. As an Amazon Associate this site earns from qualifying purchases, at no extra cost to you. Prices and stock change often, and a listing appearing here is not a statement that the pairing above is approved.
Other pairings for the EG4 LifePower4 48V 100Ah
EG4 6000XP with EG4 LifePower4 48V 100Ah
Specs align on every checked field.
EG4 18KPV with EG4 LifePower4 48V 100Ah
Specs align on every checked field.
Sol-Ark 12K with EG4 LifePower4 48V 100Ah
Partial match, some fields unverified.
Victron MultiPlus-II 48/5000 with EG4 LifePower4 48V 100Ah
Partial match, some fields unverified.
Questions people actually ask
Will the Schneider Conext SW 4048 work with the EG4 LifePower4 48V 100Ah?
Specs conflict on at least one field. Checked as a bank of 2 packs, which is the smallest number that accepts this inverter’s 105 amp charge current. Fewer packs still run the system, with the charge rate capped in inverter settings. The four checks below show which field produced that result.
What does this pairing cost to wire up?
Beyond the two units, a 100 amp Class T fuse and holder, 2 AWG battery cable cut to matched lengths, and a busbar if you are running 2 packs. A comms cable if you intend to attempt closed loop, and the pinout is rarely the same between brands.
Where does this pairing go wrong in practice?
The inverter speaks Modbus and the battery speaks CAN, RS485. There is no common protocol between them, so closed-loop operation is off the table regardless of cabling.
What charge current should I set?
The inverter tops out at 105 amps and the battery accepts 200 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.