SKU: EG4LP48V100AV2
The EG4 LifePower4 V2 is a 48V 100Ah (5.12kWh) LiFePO4 server rack battery with 100A continuous charge and discharge, dual terminals, and built-in fire arrestors. UL 1973 and UL 9540A listed, with CAN and RS485 communication for closed-loop BMS integration with most major inverter brands.
Specifications:
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The EG4 LifePower4 V2 is a 48V 100Ah (5.12kWh) LiFePO4 server rack battery designed for residential and off-grid energy storage systems. Server rack batteries use the standard 19-inch rack form factor originally designed for data centers and commercial equipment rooms. In energy storage, this form factor lets you slide batteries into purpose-built cabinets and stack them vertically in a compact footprint, the same way servers stack in a data center. This battery uses a 16-cell (16S) configuration with a 51.2V nominal voltage and 56.8V charge voltage. It's UL 1973 and UL 9540A listed, which is increasingly required for permitted installations in the US and Canada.
The LifePower4 V2 handles 100A continuous charge and discharge. At 51.2V nominal, that's roughly 5.1kW of power in or out of a single battery. For systems that need more current, batteries can be paralleled up to 64 units (327.68kWh total) with closed-loop BMS communication over CAN or RS485.
The LifePower4 V2 includes a built-in DC breaker on the front panel for manual disconnection without pulling cables. Built-in fire arrestors activate automatically if cells reach a hazardous temperature, suppressing thermal events before they escalate. The battery also supports emergency stop (RSD) functionality. When connected to an RSD button or an inverter with RSD capabilities, the battery accepts a shutdown signal to de-energize the system for emergency personnel.
The battery communicates over CAN or RS485, selectable via DIP switches on the unit. It supports multiple inverter protocols including EG4, Victron, Sol-Ark, Deye, Growatt, LuxPower, and others. Closed-loop communication allows the inverter to read actual battery SOC, voltage, current, and temperature from the BMS rather than estimating from voltage alone. This results in more accurate charging, better SOC management, and BMS-driven fault protection.
Note: current and future production runs use auto-addressing BMS and no longer have DIP switches on the face of the battery for address configuration.
The LifePower4 V2 has two positive and two negative terminals, each accepting up to 2/0 AWG compression lugs. The dual terminal design allows you to run separate cables from each terminal to reduce resistance at high current, or to daisy-chain batteries in a rack without needing external bus bars for every connection.
Rated for 6,000 cycles at 80% depth of discharge with a 10-year warranty. At one cycle per day, 6,000 cycles translates to over 16 years of daily cycling. After 6,000 cycles the battery doesn't stop working, it will have degraded to approximately 80% of its original capacity.
This is EG4's most common comparison question. Both batteries are 48V 100Ah (5.12kWh), both have fire arrestors and RSD, both support the same communication protocols, and both parallel up to 64 units. The practical differences:
The LL-S has a 3.5-inch color touchscreen on the front panel for viewing cell voltages, SOC, current, temperature, and configuring communication protocol directly on the battery. The LifePower4 V2 has no display, so protocol settings are configured via DIP switches and monitoring is done through the inverter or a connected GX device.
If you're running a system with a Cerbo GX, a monitoring app, or an inverter that displays battery data, you'll see everything you need without the screen. The LifePower4 V2 saves you roughly $100 per battery in that scenario. If you want a quick visual status check without pulling out a phone or walking to the inverter, the LL-S display is worth the premium.
The LifePower4 V2 fits the EG4 6-slot enclosed battery rack and the EG4 3-slot battery rack. Start with as few batteries as your system requires and add more to the rack over time.
The LifePower4 V2 supports multiple communication protocols over CAN and RS485, including EG4, Victron, Sol-Ark, Deye, Growatt, LuxPower, and others. The protocol is selected via DIP switches on the battery. Check EG4's compatibility documentation for your specific inverter model.
Both are 48V 100Ah with the same capacity, discharge rate, safety features, and communication protocols. The LL-S adds a 3.5-inch color touchscreen for viewing cell voltages, SOC, and configuring settings directly on the battery. The LifePower4 V2 has no screen and costs roughly $100 less per unit. If your system has a communication device already that displays battery data, the screen is a convenience, not a necessity.
Up to 64 units (327.68kWh) with closed-loop BMS communication. The batteries daisy-chain via ethernet cable, with one battery acting as the master communicating to the inverter.
It's possible but not straightforward. The two models use different communication firmware and the ethernet ports on the LL-S have crossed pinouts. If you're planning a mixed rack, contact us or EG4 support before purchasing so you understand the firmware and cabling requirements.
Yes. There's a DC breaker on the front panel for manually disconnecting the battery without pulling cables. This is useful during installation, maintenance, or if you need to isolate a single battery in a parallel bank.
The dual terminals accept up to 2/0 AWG compression lugs. EG4 includes 6 AWG battery-to-busbar cables with their batteries for rack installations. For the main run from your battery rack to the inverter, cable sizing depends on your total system current, distance, and local code requirements.
The LifePower4 V2 is a standard 19-inch rack form factor at 6.1 inches tall. It will physically fit in any rack with 19-inch wide rails and sufficient vertical clearance per slot. The bolt holes for securing it may not align with non-EG4 racks.
The LifePower4 V2 is UL 1973 listed (battery safety) and has passed UL 9540A testing (thermal runaway fire propagation). UL 9540 system-level certification, which covers the complete energy storage system, applies when the LifePower4 V2 is paired with the EG4 18kPV inverter in an EG4 enclosed cabinet. The battery alone does not carry UL 9540. If your jurisdiction requires UL 9540 for permitting, confirm your inverter and battery combination is a certified configuration.
UL 9540A is a fire safety test that evaluates thermal runaway propagation in battery energy storage systems. Passing means the battery has been tested to confirm that a single cell failure does not propagate into a larger fire event. Many jurisdictions now require UL 9540A listing for permitted residential battery installations.
LiFePO4 batteries should not be charged below freezing (32°F / 0°C) as it can permanently damage cells. The LifePower4 V2 does not have a built-in heater. If your installation is in an unheated space that drops below freezing, you'll need to address heating externally or use an inverter with a low-temperature charging cutoff.
Have had 3 of these batteries set up in an EG4 cabinet. They charge and discharge perfectly. The canbus communication with my Victron Cerbo set up nicely. I have the BMS controlling two multiplus2 inverters charging parameters using DVCC in the Cerbo without issue. Great budget batteries.
After watching Will Prowse video on building a off grid system https://www.youtube.com/watch?v=Pd5IqeBq42k I ordered this battery and inverter. It arrived via FedEx Freight. It will well packaged and secured on the pallet. The battery is a beast and I am happy I stuck with Will's recommendation. CurrentConnected ordering was easy and processed quickly! I will be ordered more after I watch more of Will's videos.
