Pytes E-BOX-48100R 5.12kWh 51.2V LFP Battery | Sol-Ark UL 9540 System | CEC Listed | 10-Year Warranty
- Long Life more than 6000 cycles at 90% DOD
- Safety UL9540A listed, UL9540 with Sol-Ark(12k, 15k ), and CEC Listed
- Smart Communications closed loop comms with Sol-Ark, Victron, Phocos, and more!
- Wide Compatibility can be used with most mainstream nominal 48V inverters
- Server Rack Style compatible with most common 19” server cabinets and racks, occupies 2.6U
See the specs->
Pytes E-Box-48100R is a 5.12 kWh, 51.2V 100Ah lithium iron phosphate (LFP) battery designed for residential solar energy storage and backup power. It supports up to 50A continuous charge/discharge, offers ≥6,000 cycles at 90% depth of discharge, and communicates with compatible inverters through CAN, RS485, and RS232. The battery weighs 112.5 lb and can be installed in a standard 19-inch server rack. It is compatible with selected Sol-Ark, Victron, Phocos and other 48V inverter systems.
The integrated solution of Pytes batteries and Sol-Ark hybrid inverter is UL 9540 certificated and is ready to form a high-performance residential energy storage system, efficiently and cost-effectively.
Overview
| Battery Type | 51.2V Lithium Iron Phosphate |
| Net Capacity | 5.12kWh |
| Dimensions(L*W*H) | 17.32 * 24.41 * 4.61 inch (440*620*117mm) |
| Certifications | UL9540A listed, UL9540 with Sol-Ark(12K 15K), and CEC Listed |
| Weight | 112.5lbs |
| Warranty | 10 years |
Product Features
-
Self-Consumption
store excess energy generated by solar panels and use it whenever -
Back-Up Power Supply
provide emergency power supply during a grid outage -
Electricity Bills Reduction
charge the battery during off-peak periods and discharge the battery during peak period - Longest Life and Highest Safety
more than 6000 cycles @90%DOD - Smart Energy Management
measure, monitor, and manage the system in real-time -
Wide Compatibility
compatible with mainstream inverters - BMS and cable set included
Product Specifications
- Nominal Voltage: 51.2V
- Voltage Range: 47.5~58V
- Nominal Capacity: 100Ah
- Nominal Energy: 5.12kWh
- Peak Discharge Rate: 102A(2.56kW@15s)
- Maximum Continuous Discharge Rate: 50A(2.56kW DC)
- Standard Continuous Discharge Rate: 50A(2.56kW DC)
- Maximum Continuous Charge Current: 50A
- Standard Continuous Charging Current: 50A
- Round-Trip Efficiency: >95%
- Cycle Life: 6000cycle
- Communication Protocol: RS232, RS485, CAN
- Connect style: Parallel
Inverter Compatibility
| Inverter | Compatibility | Communication |
|---|---|---|
| Sol-Ark 12K | Compatible | CAN |
| Sol-Ark 15K | Compatible | CAN |
| Victron | Compatible with supported configuration | CAN |
| Phocos | Compatible with supported configuration | CAN |
| Other 48V inverters | Depends on BMS protocol | CAN / RS485 |
We love to hear from you about our customer service. There are 15 FAQs which feadback from customers.
Shipping and Packaging
-
The battery can only ship via freight truck
DOWNLOADS
Datasheet:
E-Box-48100R datasheet
ForestRB Datasheet
User Manual & Quick Guide
Pytes_48100R User Manual
Pytes_48100R Quick Installation Guide
Pytes-Integration-Sol-Ark
Pytes-Integration-Victron-energy
Certificate
UL1973 US and Canada
UL9540 with 12K inverter
UL9540-with 15K inverter
UL9540A Test Report
UN38.3
ABOUT Pytes
PYTES, a national high-tech enterprise founded in 2004, focuses on Lithium-ion battery solutions for e-bikes, 3C products, vacuum cleaners, and energy storage systems, etc. Headquartered in Shanghai, PYTES has been expanding globally, setting up three production bases in Shanghai (China), Shandong (China), and Vietnam, and two marketing & service centers in Europe and North America. PYTES is strong in R&D, with advanced laboratories certified by TUV, DEKRA, SGS & BV, etc.
FAQ
The E-Box-48100R supports closed-loop CAN/RS485 communication with major inverter brands, including:
- Sol-Ark (e.g., 12K, 15K)
- Victron Energy (via Cerbo GX / Venus OS)
- Luxpower
- Growatt (e.g., SPF series)
- Deye
- Schneider Electric & Phocos
Yes, but with caveats. The BMS firmwares must match, and the battery with the newest/master BMS firmware should be set as the master unit (connected directly to the inverter). Note that the newer V5 model includes internal heating pads, whereas standard 48100R units do not.
- Up to 3 units: Diagonal daisy-chaining (positive lead on Battery 1, negative lead on Battery 3) using short 25mm² interconnect cables.
- 4 or more units: Use external busbars (e.g., Victron Lynx Power In) with fused, equal-length cable pairs to prevent current imbalances between units.
You can connect up to 16 modules in parallel per cluster without an external hub (providing up to 81.92 kWh). With an additional Pytes Hub (MB00), up to 56 or 224 modules can be scaled into a single system.
SOC drifts occur due to internal resistance differences, cable resistance variations, or subtle BMS calibration differences between production batches. Performing a full charge up to 56.8V triggers top balancing and recalibrates the internal SOC.
When a cell hits an over-voltage threshold or temperature boundary, the master BMS sends a signal requesting a temporary reduced charge current (e.g., 5A) to allow passive cell balancing. A soft reset of the BMS or bringing the pack down/up through a full balance cycle typically resolves this.
You can read battery data directly via the Console (RS232) port on the front panel. Community integrations (like ESPHome with a MAX3232 RS232 transceiver) allow real-time monitoring without interrupting CAN/RS485 communication with the inverter.
If fully discharged, the internal BMS opens the contactor for protection, showing 0V at the terminals. You can wake it by applying a 48V DC charging source (using lead-acid profile/no-BMS mode on the inverter) or using the reset button on the front panel.
If running open-loop (no CAN/RS485 communication):
- Bulk / Absorption Voltage: 56.4V – 56.8V
- Float Voltage: 54.0V
- Low Voltage Cutoff: 47.5V – 48.0V
- Recommended Max Charge/Discharge Current: 50A per battery (100A peak)
When closed-loop communication is enabled, the battery BMS takes total control over charging Parameters. Settings on Sol-Ark, Victron, or Deye inverters will automatically update to 56.8V absorption based on BMS commands.
Yes. Even if kept in a partial state-of-charge schedule (e.g., 20% to 90%), charging to 100% (56.8V) once every week or two allows the passive balancer to balance individual cells.
The standard 48100R model does not include built-in heating pads (unlike the newer Pytes V5). Charging must cease if ambient temperatures drop below 32°F (0°C) to protect the LFP cells from damage.
The unit is rated for ≥ 6,000 cycles at 90% Depth of Discharge (DOD). Under typical daily cycling, the battery is expected to last 10–15 years before dropping to 70–80% original capacity.
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