The Epoch SR48100H is a 48V 100Ah (5.12kWh) self-heating server rack lithium battery built with lithium iron phosphate (LiFePO4) chemistry, manufactured by Epoch Batteries and designed for residential solar energy storage, home backup power, and off-grid systems. Its defining feature is a built-in self-heating system that allows the battery to charge at ambient temperatures as low as -25°C making it a practical 48V server rack lithium battery for cold climate installations where standard lithium batteries would fail to charge. We are an authorized Epoch Batteries dealer and carry the SR48100H with manufacturer warranty coverage from the date of purchase.
Commonly Used For
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Home solar energy storage, storing solar energy during the day for use at night or during grid outages
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Residential backup power, maintaining power to essential loads during utility outages without a generator
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Off-grid cabin and rural property power, providing a scalable 48V lithium battery bank with no utility connection
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Cold climate solar installations, charging and discharging reliably in unheated garages, barns, and outbuildings down to -25°C ambient
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Detached shop and agricultural building power, running tools, lighting, and equipment from a solar-charged battery bank
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Van and vehicle conversion power systems, rack-mounted 48V lithium battery installation for mobile off-grid power
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Scalable commercial energy storage, expandable from 5.12kWh to over 160kWh using up to 32 units in parallel
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Peak shaving and grid tie-in systems, storing off-peak or solar energy and discharging during high-demand periods
This 48V server rack lithium battery mounts in a standard 3U server rack enclosure and communicates directly with a wide range of solar inverters via CAN or RS485. All wiring is included per Epoch Batteries' product listing. The plug-and-play terminal design allows most customers to complete a standard installation without sourcing additional cables.
Self-Heating Function for Cold Weather Installations
The defining feature of the SR48100H is its integrated self-heating system, which makes it a practical cold weather lithium battery for installations in unheated garages, outbuildings, shops, and northern climates. Standard LiFePO4 batteries cannot be safely charged below 0°C. This self-heating server rack battery solves that limitation by automatically warming its cells before charging begins.
When the battery's internal temperature drops between -25°C and 5°C and a charge source is connected with at least 0.08C of current, the internal heating pad activates without any manual input. The battery heats itself to 12°C before charging starts, protecting the cells from cold-weather degradation. Discharge is rated to -20°C, so the battery continues to supply power even in cold conditions.
When multiple SR48100H units are connected in parallel, all units enter heating mode together whenever any one unit reaches the heating trigger condition. Heating stops across all units once all have reached 12°C.
5.12kWh Lithium Battery. Scalable Home Solar Battery Storage
Each SR48100H delivers 5.12kWh of nominal energy (4.92kWh usable at 0.2C rate). For residential solar backup, two units provide approximately 10kWh a practical starting capacity for overnight essential loads. As energy needs grow, additional units can be connected in parallel up to a maximum of 32 units, creating a home solar battery storage bank of over 160kWh from a single battery model.
This scalability makes the SR48100H a practical choice for homeowners who want to start small and expand their off-grid lithium battery bank over time without replacing existing equipment. Each unit added uses the same plug-and-play wiring and communication protocol, so there is no need to reconfigure the system when adding capacity.
LiFePO4 Chemistry and Cycle Life
LiFePO4 (lithium iron phosphate) is a chemically stable lithium chemistry that does not produce thermal runaway under normal operating conditions. The SR48100H is rated for 6,000 or more charge cycles at 90% depth of discharge before capacity falls to 60% of its original value. Cycled once per day, this corresponds to approximately 16 years of service life. The battery is maintenance-free under normal residential operating conditions.
At -20°C the battery retains at least 60% of its room-temperature discharge capacity. At 0°C it retains at least 80%. This discharge temperature performance data is from the manufacturer's specification sheet.
How Customers Use This 48V Lithium Battery
A typical residential installation pairs 2 to 6 SR48100H units with a compatible hybrid inverter and a rooftop or ground-mount solar array. Solar energy generated during the day charges the server rack lithium battery bank. At night or during a grid outage, the inverter draws from the battery bank to supply essential household loads refrigerator, lighting, outlets, well pump, and heating fans. Many homeowners use this setup to reduce grid dependence and maintain power during outages without a generator.
Common Installation Types for This Server Rack Lithium Battery Residential solar energy storage with hybrid inverter. Home backup power system for grid outages. Off-grid cabin or rural property with no utility connection. Detached shop, barn, or agricultural building in cold climate. Van or vehicle conversion requiring a rack-mounted 48V lithium battery. Commercial or small business energy storage with scalable capacity.
Inverter Compatibility
This 48V server rack lithium battery communicates via CAN or RS485 and is confirmed compatible with the following inverter brands per Epoch Batteries' published compatibility list:
Victron
Sol-Ark
SMA
Growatt
Goodwe
Deye
Sofar
Solis
Studer
Sunsynk
Voltronic
Schneider
LUXPOWER
ALPHA-OUTBACK
SAJ
MEGAREVO
MPP
TBB
Inverters that support the Pylontech CAN or RS485 protocol may also be compatible. Verify your inverter's compatibility before purchasing. Active inverter communication is required for warranty coverage, see the FAQ tab for details.
What Is Included
- 1 x Epoch SR48100H 48V 100Ah server rack lithium battery (factory tested)
- All wiring included per Epoch Batteries' product listing
- User manual with inverter communication settings and charge parameters
A server rack enclosure is not included and is sold separately. Wall mount, floor mount, and stacked configurations are possible with additional mounting kits sold separately. If you have questions about what is included in the box for your specific order, contact us before purchasing and we will confirm directly with you.
Safety Certifications
Meets UL 1973 Standard
FCC
CE
RoHS
UN38.3
Integrated Self-Heating. Cold Weather Lithium Battery
The internal heating pad activates automatically when cell temperature is between -25°C and 5°C and a charge current of at least 0.08C is present. The battery warms to 12°C before charging begins, protecting cells in unheated garages, barns, outbuildings, and cold climates without manual intervention.
LiFePO4 Chemistry. Thermal Stability and Long Cycle Life
Lithium iron phosphate chemistry provides thermal stability and does not produce thermal runaway under normal conditions. Rated for 6,000 or more charge cycles at 90% depth of discharge, approximately 16 years under daily cycling. Maintenance-free under normal residential use.
5.12kWh per Unit. Scalable Solar Battery Storage
Each server rack lithium battery delivers 5.12kWh nominal (4.92kWh usable at 0.2C). Up to 32 units connect in parallel, building a 48V lithium battery home storage bank suited to any residential or small commercial load requirement.
CAN / RS485 Inverter Communication
Communicates state of charge, voltage, temperature, and fault status to compatible inverters in real time, allowing the inverter to adjust charge and discharge parameters automatically. Required for full warranty coverage per manufacturer specification.
Advanced Battery Management System (BMS)
The integrated BMS monitors each cell group and protects against overcharge, over-discharge, over-current, short circuit, and temperature extremes. Short circuit protection triggers automatic load cutoff. Cell balancing is handled internally.
Plug-and-Play. All Wiring Included
All wiring is included per Epoch Batteries' product listing. The plug-and-play terminal design and 3U rack form factor allow installation into a standard server rack enclosure without custom cable fabrication in most standard setups.
Up to 32 Units in Parallel
Expand storage capacity over time by adding more SR48100H units. Up to 32 units connect in parallel for an off-grid lithium battery bank of over 160kWh. Do not mix with batteries of a different model or brand in the same parallel bank.
Discharge to -20°C (-4°F)
The SR48100H discharges down to -20°C, providing usable power in cold conditions. At -20°C the battery retains at least 60% of its room-temperature capacity. At 0°C it retains at least 80%. Data from manufacturer specification sheet V02.
Multiple Installation Configurations
Supports rack-mounted, wall-mounted, floor-mounted, and stacked configurations. Wall, floor, and stack require additional mounting kits sold separately. The 3U form factor fits standard 19-inch server rack enclosures.
High Peak Discharge Capability
100A continuous discharge, 119A for 5 minutes, and 200A for 15 seconds. The peak discharge capacity supports motor start loads and other momentary high-demand draws without triggering the BMS protection cutoff.
Low Self-Discharge Rate
Self-discharge rate is 3% or less per month and 15% or less per year in sleep or power-off mode. Suitable for seasonal or backup installations where the battery may sit unused for extended periods, provided it is stored above 50% state of charge.
11-Year Manufacturer Warranty
Covered against manufacturing defects for 11 years from the date of sale. As an authorized Epoch Batteries dealer, we carry the full manufacturer warranty on every unit sold. Warranty registration required through Epoch's warranty portal.
