EG4 Electronics, 48-volt server-rack battery
EG4 LifePower4 48 V 100 Ah Battery
Also written as LifePower4, EG4 LP4, EG4 48V 100Ah
A 5.12 kWh rack-mounted LiFePO4 module for 48 V off-grid banks: add modules one at a time as the system grows.
Best for
A cabin or farm bank built around a 48 V inverter such as the EG4 6000XP, two or more modules.
Photo pending: we only show images we own or are licensed to use.
Strengths and limitations
Strengths
- 5.12 kWh at 51.2 V, 100 Ah (Signature Solar).
- Tested at 7,000 cycles to 80% depth of discharge (Signature Solar).
- UL 1973 listed; UL 9540A tested (Signature Solar).
- CAN and RS485 protocols selected by DIP switch, including EG4 and Victron (Current Connected).
Limitations
- Weight is not listed by either seller we read.
- Signature Solar's page mentions only an RS485 cable; the CAN protocol list comes from Current Connected.
- Warranty: 5 years, or 10 years when used with an EG4 18kPV (Signature Solar).
What it does not do
- Carry UL 9540 on its own: that system listing applies only with EG4's 18kPV in an EG4 cabinet (dealer listing).
- Live outdoors or in an unheated shed without a plan for temperature; neither listing we read gives its charge temperature range.
- Meet the 6000XP's minimum alone: EG4 recommends 200 Ah per inverter, so two modules.
Specifications
From the cited source on 2026-11-10. "Not verified" means no source we checked published it.
| Energy | 5.12 kWh (51.2 V, 100 Ah) [1] |
|---|---|
| Cycle life | 7,000 cycles to 80% depth of discharge (tested) [1] |
| Listings | UL 1973; UL 9540A test [1] |
| UL 9540 | Only with an EG4 18kPV in an EG4 cabinet [2] |
| Communication | CAN and RS485, DIP-switch protocol [2] |
| Size | 17.4 x 18.5 x 6.1 in, 3.5U rack [1] |
| Weight | Not verified |
| Charge temperature | Not verified |
| Warranty | 5 years (10 years with an EG4 18kPV) [1] |
Power and travel notes
Rated capacity: 5120 Wh. Over 160 Wh: forbidden on passenger aircraft per FAA. Shipping by carrier follows separate DOT and carrier rules.
Real runtime is less than capacity divided by load: conversion losses, battery reserve and temperature all cut into it. Size a battery for your fridge.
Before you buy
- Follow the maker's rack, spacing and cabling rules; a 48 V bank stores a lot of energy in a small space.
Sources
- EG4 LifePower4 lithium battery 48V 100Ah, Signature Solar (EG4 parent retailer) (retailer), read 2026-11-10. Re-read 2026-11-10 (evening). 51.2 V (48 V) 5.12 kWh, 100 Ah internal BMS; 17.4 x 18.5 x 6.1 in, 3.5U; tested at 7,000 cycles to 80% depth of discharge; design life 15+ years at 80% DoD; UL 1973 (BBFX2.MH65889), UL 9540A in the title only; RS485 cable included, no other protocol named; 5-year warranty (10-year when used with an EG4 18kPV). Weight not listed.
- EG4 LifePower4 V2 48V 100Ah server rack battery, Current Connected (EG4 dealer listing) (retailer), read 2026-11-10. 48 V, 100 Ah, 5.12 kWh; CAN and RS485 protocols selected by DIP switch (EG4, Victron and others); UL 9540 system certification applies only with the EG4 18kPV in an EG4 cabinet, the battery alone does not carry UL 9540.
- EG4 6000XP 48V 6kW off-grid all-in-one inverter/charger, Current Connected (EG4 dealer listing) (retailer), read 2026-11-10. EG4 recommends a minimum battery capacity of 200 Ah or more per inverter.