Rubix Battery 48 Volt 100 AH, Giga Stack Series, Lithium Battery - Blue
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Visit CalculatorThe Rubix Giga Stack Series 48V 100Ah Lithium Battery (RGS-48100) is a modular, stackable energy storage solution engineered for residential and light-commercial solar systems. Built with Lithium Iron Phosphate (LiFePO₄) chemistry, this battery delivers dependable performance, long cycle life, and advanced Battery Management System (BMS) protection. Its stackable architecture allows scalable expansion while maintaining a compact footprint, making it ideal for structured indoor energy storage installations.
48V Lithium Platform – Designed for 48V inverter systems requiring stable high-voltage battery input.
100Ah Capacity – Delivers reliable energy storage for daily cycling or backup applications.
LiFePO₄ Chemistry – Superior thermal stability, enhanced safety, and extended lifespan compared to traditional lithium chemistries.
Stackable Giga Architecture – Modular design allows vertical stacking for scalable system growth.
Integrated BMS Protection – Safeguards against over-voltage, under-voltage, overcurrent, and temperature extremes.
Indoor ESS Design – Engineered specifically for indoor energy storage installations.


Everything you need is included with your product.
Model
| Specification | Value |
| Model number | RGS5100 |
Power Ratings
| Specification | Value |
| Nominal voltage | 48 |
| Actual voltage @20% SOC | 51.2 |
| Amp-hrs | 100 |
| Nameplate capacity-kWh | 5.12 |
Charging/Discharging
| Specification | Value |
| Max continuous discharge amps | 90 |
| Recommended discharge (max amps) | 75 |
| Max cont. discharge kW | 4.6 |
| Surge discharge amps 0.5 (micro seconds) | 1,000 |
| Surge discharge 10ms | 200 |
| Max charging amps-continuous | 70 |
| Peak charging amps-30 minutes | 80 |
| Recommended voltage range (cycling) | 51-56.5 |
| Max voltage range (cycling) | 48-57.6 |
| Recommended absorb volts | 56.8 |
| Max absorb volts-solar only | 57.6 |
| Absorb done amps/per battery | 5 |
| Absorb done time (minutes) | 10 |
| Float volts | 54.4 |
| Temp comp-mV/degrees celsius | 0 |
Operational
| Specification | Value |
| Rated cycle life-100% DoD | 4,000 |
| Rated cycle life-80% DoD | 6,000 |
| Rated cycle life-50% DoD | 8,500 |
| Retained capacity at end of cycle life | 80% |
| Max recommended discharge volts | 51V (20%) |
| Inverter low battery cutout | 48V |
| Low volt cutout wakeup | 44 |
| High volt cutout wakeup | 55 |
| High current cutout wakeup | Reverse direction of current |
Certification
| Specification | Value |
| Battery certification | UL9540A |
| Transport certification | UN38.3 |
External
| Specification | Value |
| Handles | Indented handles |
| Terminal type | Bolt-on M8 |
| Max torque | 20 FT LBS |
Environment/Installation
| Specification | Value |
| Ventilation required | No |
| Minimum temp (degrees F) | 32 |
| Maximum temp (degrees F) | 120 |
| Maximum batteries per stack | 6 |
| IP rating | 50 |
| Outdoor rated | No |
| Installation position | Horizontal with base unit only |
Safety
| Specification | Value |
| Breaker size (amps) | 125 |
| BMS low volt cutout | 41 +/-1VOLT |
| BMS high volt cutout | 59 +/-1VOLT |
| BMS low temp cutout | 32 F |
| BMS high temp cutout | 135 F |
| Pressure vented cells | Yes |
Internal
| Specification | Value |
| Cell chemistry | LiFePO4 |
| Cell format | Prismatic |
| BMS amp ratings | 150 |
| Balancing type | Impactive |
| Cell connection | Welded busbar |
| Max balancing current | 1.1A |
Touchscreen LCD Features
| Specification | Value |
| SOC% | ✓ |
| Volts | ✓ |
| Charging/discharging amps | ✓ |
| Balancer status | ✓ |
| Cell voltages | ✓ |
| Faults | ✓ |
Physical Dimensions & Weights
| Specification | Value |
| Batteries per crate | 4 |
| Crate dimensions | 40 x 30 x 22 |
| Battery weight | 117 |
| Total crate weight | 525 |
What is the nominal capacity of this battery?
It is rated at 48V and 100Ah.
Can this battery be stacked?
Yes. The Giga Stack Series is designed for modular stacking configurations.
What lithium chemistry is used?
It uses Lithium Iron Phosphate (LiFePO₄) cells.
Is this battery suitable for outdoor installation?
No. It is rated for indoor installations only.
Does it include an integrated BMS?
Yes. The battery includes a built-in Battery Management System for safety and performance monitoring.
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