EG4 LL-S 48V 100Ah
#10 in Server rackFull review
A 5 kWh server-rack module with a screen, for owners extending an existing EG4 LL bank. Most new buyers will find it out of stock.
4.0/5
For installers building permitted off-grid or backup systems around Schneider, Victron or SMA gear. It costs more than budget rack batteries, but you get cold-weather charging and a UL 9540 path.
- 5.1 kWhCapacity
- 70 AOutput
- YesUL 9540A
- 10 yearsWarranty
Check price at NAZ Solar Electric$1,720
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Heater lets it charge in unheated sheds and cabins down to about 1 °F
- Full UL 9540 listing when six are installed in Discover’s Slimline enclosure
- Strong 218 A surge handles motor and pump starts
- Ten-year warranty with registration
Cons
- Continuous output of about 3.6 kW per module is low, so big inverters need several
- Closed-loop communication requires buying the LYNK II Gateway
- Costs more per kWh than most server-rack batteries
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its case. How we rank explains each one.
Specifications
| Model number | 48-48-5120-H |
|---|---|
| Capacity | |
| Case | Server rack (19-inch) |
| Nominal voltage | 51.2 V |
| Capacity | 100 Ah |
| Energy | 5.1 kWh |
| Chemistry | LiFePO4 |
| Power | |
| Continuous discharge | 70 A |
| Peak discharge | 218 A |
| Max charge current | 70 A |
| Modules in parallel | Up to 36 |
| Safety and communication | |
| UL 1973 | Yes |
| UL 9540A | Yes |
| UL 9540 | No |
| Communication | CAN (LYNK port) to LYNK II Gateway |
| Works with inverters | Schneider, Victron, Sol-Ark, SMA, Studer, Growatt, Solis, Deye, Luxpower, Sunsynk, NOARK, Selectronic |
| Self-heating | Yes |
| App | No |
| Build | |
| Display | No |
| Built-in breaker | Yes |
| Enclosure | IP20 |
| Dimensions | 497 x 439 x 133.5 mm (19.6 x 17.3 x 5.3 in), 3U |
| Weight | 97 lb |
| Warranty | 10 years |
| Released | 2023-09 |
Alternatives in this case
EG4 LifePower4 V2
#11 in Server rackFull review
A standard 5 kWh server-rack module for EG4 and other 48 V inverter owners building a bank in a cabinet. Buy it only if you can find it in stock; EG4 itself is selling WallMount batteries instead.
SunGoldPower CoreX 5 Pro
#13 in Server rackFull review
A well-equipped 5 kWh rack module with a screen and app, for indoor off-grid and backup banks that don’t need a UL listing.
Amazon $1,150$1,150
Compare
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