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Epoch Batteries 48V 100Ah (5.12kWh) Self-Heating Server Rack Lithium Battery
SKU:SR48100H
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Epoch Batteries 48V 100Ah (5.12kWh) Self-Heating Server Rack Lithium Battery
Epoch Batteries 48V 100Ah (5.12kWh) Self-Heating Server Rack Lithium Battery
Self-heating 3U server rack LiFePO4 battery
Epoch 48V 100Ah Server Rack Lithium Battery (5.12kWh) | Self-Heating
5.12kWh lithium battery storage in a compact 3U rack-mount chassis for home solar backup, off-grid power walls, and professional ESS builds.
The Epoch 48V 100Ah server rack battery is a self-heating 5.12kWh lithium battery built for DIY solar builders, off-grid homeowners, and professional installers. This Epoch 48V battery combines a compact 3U rack mount lithium battery chassis with CAN/RS485 communication, parallel expansion up to 32 batteries, 6,000+ cycle life, and active heating support for cold-climate energy storage.
51.2V
Nominal voltage
100Ah
Capacity
5.12kWh
Nominal energy
3U
Rack height
100A
Discharge
32x
Parallel ready
Built for energy storage systems
11-year limited warranty3 yrs free replacement
6,000+ cyclesLong service life
Self-heatingCold-climate charging
CAN / RS485Inverter communication
3U rack mountSpace-saving cabinet fit
Advanced BMSBuilt-in protection
Seamless Closed-Loop Inverter Communications
CAN/RS485 ports for smarter 48V home solar backup and off-grid power wall systems.
For technical buyers, inverter communication is often the deciding factor. The Epoch SR48100H includes CAN and RS485 communication ports so the BMS can share battery status, charge and discharge limits, and state-of-charge data with compatible inverter systems.
Epoch documents compatible inverters over CAN (Victron, SMA, Studer Innotec, Sofar, Sol-Ark, Solis, Goodwe, Deye, Growatt, SAJ, LuxPower, Megarevo, INVT, Sermatec, TBB, MUST, Sunsynk, and Schneider) and over RS485 (Voltronic, RCT, MPP Solar, Alpha-Outback, and Phocos). Set the protocol with DIP switches 6 and 7 on the master battery, use the matching inverter communication cable (Version I, II, or III, sold separately), and confirm the inverter firmware before commissioning. For other inverters, contact Epoch support.
Built for Cold Climates: Active Self-Heating Technology
A self-heating server rack battery for dry, protected garages, utility rooms, and battery rooms.
This Epoch battery uses incoming charge current to warm its cells before charging in cold conditions.
The heater starts when the battery is between -25°C and 5°C (-13°F to 41°F) and incoming charge current reaches 0.08C (8A), and it stops when the battery reaches 12°C (54°F); in a parallel bank, all batteries heat together. The cells themselves charge only from -10°C to 50°C (14°F to 122°F), with inverter communication, which gives the battery its -25°C to 50°C charge rating with heating. Little or no charge current during warm-up can be normal.
Massive Scalability: Build Your Ultimate Power Wall
Start with 5.12kWh. Scale your 48V battery bank as your loads grow.
One battery stores 5.12kWh nominal energy, making it an excellent building block for solar backup, emergency power, and off-grid ESS projects. When your power needs grow, the SR48100H supports plug-and-play parallel expansion.
Wire multiple batteries in parallel to grow from a single 5.12kWh starter system to larger banks. Epoch lists support for up to 32 batteries in parallel (3,200Ah, 163.84kWh), with automatic battery addressing, allowing large rack-based 48V storage systems when installed with proper communication, busbars, overcurrent protection, and qualified system design.
Purpose-built for serious home energy storage and off-grid power systems.
Standard 3U Size & Rack Integration
The 3U form factor is designed for standard 19-inch server racks, telecom racks, and solar battery cabinets. This keeps wire management clean, and the stack kit (sold separately) stacks up to four batteries vertically to save floor space. Wall and floor kits are also available.
Code Compliance & 6,000+ Cycle Life
The battery is listed to UL 1973 (ANSI/CAN/UL 1973:2018) at pack level through ETL, and UL 9540 certification is pending. Its BMS protects against overcharge, over-discharge, over-current, short circuit and reverse polarity, and high and low temperature, with a pre-charge circuit, and the cells are rated for 6,000+ cycles at 0.2C and 90% DoD (25°C, to 60% of initial capacity). Always confirm current certification documents with Epoch and the local authority having jurisdiction before permitting a grid-connected ESS.
Compatible applications
Home solar backup, off-grid power walls, and rack-mounted ESS builds.
✓48V home solar backup and residential energy storage systems.
✓Off-grid solar battery banks for homes, cabins, shops, and remote power.
✓DIY solar builders looking for a 3U rack mount lithium battery with CAN/RS485 communication.
✓Professional installers building closed-loop inverter systems with Victron, Sol-Ark, Growatt, SMA, Deye, Schneider, Luxpower, or similar equipment.
✓Dry, protected garages, utility rooms, and battery rooms where self-heating supports cold-weather charging.
✓Expandable rack-based energy storage banks where batteries are paralleled as capacity grows.
✓Protected 48V rack installations in RVs, motorhomes, and expedition vehicles.
✓Ham radio and communications backup power.
✓Wall, rack, floor, or stacked installations using approved accessory kits and qualified installation practices.
Battery features
Spec-driven details for serious 48V system builders.
5.12kWh lithium batteryStores 5.12kWh nominal energy in a compact 48V 100Ah server rack format.
3U rack mount lithium batteryFits standard rack and battery cabinet layouts for clean, space-saving home energy storage.
Self-heating server rack batteryWarms the cells with incoming charge current from -25°C, so the battery can charge in cold, dry indoor spaces.
CAN / RS485 communicationBuilt-in communication ports support closed-loop inverter integration and protocol setup.
100A continuous dischargeProvides up to roughly 5,120 watts of DC output from a single battery at nominal voltage.
70A max charge currentAccepts up to 70A maximum charge current (50A or less recommended) with compatible lithium inverter/charger systems.
Max 32 in parallelScale from one 5.12kWh battery to 163.84kWh (3,200Ah) rack-based power banks.
6,000+ cycle lifeLong-lasting LiFePO4 chemistry for serious solar and backup-power systems.
Indoor IP20 protectionDesigned for dry, protected rack rooms, garages, utility spaces, and solar battery cabinets.
Advanced BMS protectionBuilt-in BMS helps protect against overcharge, over-discharge, over-current, short circuit, and temperature extremes.
Compatible inverter ecosystemSupports popular inverter brands through CAN/RS485 protocol settings and communication cables.
11-year limited warranty3 years of free replacement, then 40% off MSRP on a replacement battery through Year 11. Register within 90 days or keep your proof of purchase.
UL 1973 listedListed to UL 1973 (ETL, pack level); UL 9540 certification is pending.
s strongly recommended
Let the BMS and inverter manage the system together.
The specification notes that communication between the battery and inverter is important to maximize dynamic performance and lifespan. Configure the correct protocol, communication cable, DIP settings, and charge/discharge limits before commissioning the system.
Fitment and installation note
Verify the complete system before installation.
Installation should be performed by qualified personnel. The battery weighs about 101 lb (46 kg), so lift it with two people, and never install it upside down or on its side. Confirm rack depth (510 mm / 20.1 in including the front handles), rack weight rating, ventilation, grounding, battery-to-battery communication wiring, inverter protocol, DC cable sizing, breaker/fuse sizing, torque, and local code requirements before installation. Always follow Epoch’s latest manual, inverter documentation, and local electrical code.
Specifications:
Epoch Batteries 48V 100Ah (5.12kWh) Self-Heating Server Rack Lithium Battery
Electrical
Nominal voltage
51.2 V
Capacity
100 Ah (0.2C, 25 °C)
Stored energy
5.12 kWh (5,120 Wh at 0.2C)
Operating voltage
48.0–56.0 V
Max charge voltage
56.0 V
Internal resistance
≤ 30 mΩ (1 kHz AC, 50% SOC)
Cycle life
6,000+ cycles (0.2C, 90% DoD, 25 °C, to 60% of initial capacity)
Current Ratings
Continuous discharge
100 A (starting temperature ≤ 30 °C)
Recommended discharge
50 A or less
Peak discharge
119 A for up to 5 min; 200 A for up to 15 s
Continuous charge
70 A
Recommended charge
50 A or less
Short-circuit protection
Yes — automatic load cut-off
Charge Settings (LiFePO4)
Bulk / absorption
56.0 V
Absorption end
Standard charge: hold 56.0 V until current falls to 0.02C (2 A)
Float
54.6 V
Re-bulk
50.0 V (re-charge / generator start)
Equalization
Disabled
Temperature
Charge (with heating)
−13 °F to 122 °F
Discharge
−4 °F to 122 °F, with communication
Storage (recommended)
59 °F to 95 °F, 5–75% RH
Self-discharge
≤ 3% per month; ≤ 15% per year (sleep or power-off mode)
Mechanical
Dimensions (L × W × H)
17.4 in × 18.1 in × 5.2 in
Weight
101 lb , without accessories
Terminals
Plug-in power connectors: 2 positive, 2 negative
Enclosure
IP20 per IEC 60529 — indoor use
System and Compliance
Bank limits
Parallel only; maximum 32 batteries in parallel; no series connections
Monitoring
CAN / RS485 to the inverter (RJ45 Link IN / Link OUT); front-panel LEDs; no Bluetooth
Product certifications
UL 1973 (ANSI/CAN/UL 1973:2018), ETL, pack level; UL 9540 pending
Transport
UN 38.3; Class 9 lithium battery shipping classification
The Epoch 48V 100Ah server rack battery communicates with compatible inverters through the master battery’s Link IN port, over CAN (Victron, SMA, Studer Innotec, Sofar, Sol-Ark, Solis, Goodwe, Deye, Growatt, SAJ, LuxPower, Megarevo, INVT, Sermatec, TBB, MUST, Sunsynk, and Schneider) and over RS485 (Voltronic, RCT, MPP Solar, Alpha-Outback, and Phocos). Set the protocol with DIP switches 6 and 7 on the master battery and use the matching inverter communication cable (Version I, II, or III, sold separately). For other inverters, contact Epoch support.
Yes, when the space is dry and protected. The battery is rated to charge from -25°C to 50°C with heating: from -25°C to 5°C, with at least 0.08C (8A) of incoming charge current, the heater warms the cells until the battery reaches 12°C, and the cells charge only from -10°C to 50°C. It is an IP20 indoor-use battery, so install it in a dry, protected garage, utility room, battery room, or cabinet, away from rain, condensation, washdown, and salt air.
A single unit is rated for 100A maximum continuous discharge. At 51.2V nominal, that equals roughly 5,120 watts of DC output. For large inverters, well pumps, compressors, or high-surge tools, it is best to size the inverter and battery bank together and often use multiple batteries in parallel for extra surge headroom and lower stress per battery.
3U refers to the vertical rack height. One rack unit is 1.75 inches, so a 3U battery is about 5.25 inches tall. This battery is designed for standard 19-inch rack and cabinet systems, with listed dimensions of 17.4 inches by 18.1 inches by 5.2 inches. It is 482.6 mm (19.0 in) wide across its rack ears and 510 mm (20.1 in) deep including the front handles.
The SR48100H is listed to UL 1973 (ANSI/CAN/UL 1973:2018) at pack level through ETL, and its UL 9540 certification is pending. It is also UN 38.3 tested for transport (Class 9). Home energy storage projects often need approval from the local authority having jurisdiction, utility, or fire marshal, so confirm current certification documents with Epoch and the authority having jurisdiction before permitting a grid-connected ESS. The ETL certificate is listed under Downloadable resources.
No. These are native 48V (51.2V nominal) batteries, and series connection is not supported. Series or parallel connections beyond this model’s limits are excluded from the warranty. Use the plug-and-play parallel configuration to increase amp-hours and kilowatt-hours.
Up to 32 batteries in parallel (3,200Ah, 163.84kWh), with automatic battery addressing. Use matched SR48100H batteries of similar age, condition, and firmware, charged to the same state of charge, and design the bank with correct communication wiring (each Link OUT to the next battery’s Link IN), busbars, breakers, fusing, rack hardware, and inverter settings.
No. This is an IP20 server rack battery intended for protected indoor use. It should be installed in a dry, clean, ventilated environment such as a utility room, rack cabinet, battery room, shop, or protected garage. It is not an IP67 outdoor battery and should not be exposed to rain, washdown, bilge water, or moisture.
Epoch’s recommended settings are 56.0V absorption (hold until current falls to 0.02C, 2A), 54.6V float, and 50.0V re-charge, with up to 70A maximum and 50A or less recommended charge current per battery, and equalization disabled. For inverter/charger systems, use closed-loop CAN or RS485 communication so the BMS sets the charge and discharge limits; without communication, program 56.0V absorption and 54.6V float. Set the inverter’s low-voltage cut-off to 48.0V (restart at 52.0V) and its low SOC cut-off to 4%.
Product Documents:
Epoch Batteries 48V 100Ah (5.12kWh) Self-Heating Server Rack Lithium Battery User Manual
Very heavy for a 4D - suggests a lot of plates - more plates the better. Batteries were packaged in an original Renogy box which had foam damage protection. Batteries arrived promptly and are working well.
I have bought 10 sets of these. I used 2 sets to support 2-590watt bifacial and 1 460 watt panel. These are setup vertically. I have them running in serial for a total of of 4 sets. Two of them run to my Anker Solix F3800 plus which allow me to get almost the max of 3200watts. I have 2 F3800 plus with a total of 10 bp3800 batteries for a total of 46,080 wh of storage. I mounted them on 15' aluminum rails. I connected the rails to boards and mounted them with 5" caster wheels which allow me to easily move them to the direction of the sun. This allows me on most days to outproduce my 27 360watt solar panels on my roof. The other 2 sets I each have two 460 watts panels. 1 set I have running to 2 chest freezers and a fridge in the basement. I have 4,000 wh of battery storage. The other set mostly runs my PC gaming area. I have 6,000 wh battery storage.
I have a total of 3.5mwh of battery storage with my electric company.
