ZERITHIUM SIB-48 — Complete 48V Sodium-Ion Home Battery Pack

America's first publicly documented DIY 
sodium-ion home storage pack. Built, charged, 
and load-tested in Aurora, Illinois.

Every cell individually QA tested. Every charge 
cycle logged. Every data point published on 
YouTube before you buy.

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WHAT IS INCLUDED
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THE PACK
✓ 16 × Hakadi NaFP 210Ah prismatic sodium-ion cells
✓ 16S1P configuration — 48V nominal, 51.2V actual
✓ ~10.7 kWh total energy
✓ 210Ah rated capacity

THE ENCLOSURE
✓ Seplos MASON-210 steel enclosure
✓ Front panel with P+/P- Anderson connectors
✓ LCD display — shows voltage, current, SOC, 
  temperature, warnings
✓ CAN port, RS485 port x2, Bluetooth

THE BMS
✓ Seplos 200A Smart BMS
✓ Pre-configured for NaFP sodium-ion chemistry
✓ Protects against: overvoltage, undervoltage, 
  overcurrent, over-temperature, short circuit
✓ Bluetooth app monitoring (iOS and Android)
✓ RS485 communication — compatible with 
  BatteryMonitor V2.1.12 and similar software

CABLES AND CONNECTORS
✓ BMS balance wiring harness (factory installed)
✓ Temperature sensor leads (factory installed)
✓ M8 adapter cable — P+/P- to your charger

DOCUMENTATION
✓ Full cell QA datasheet — every serial number, 
  every IR and OCV reading
✓ Cycle 1 charge data log
✓ Build series videos (Parts 1–6) on YouTube
✓ Direct email support from the builder

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WHAT IS NOT INCLUDED
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NOT INCLUDED — BUY FROM US (optional add-ons):
◯ Charger — 58.4V 20A LiFePO4 charger 
  (works for NaFP — same 3.65V/cell max)
  Available: saltrabatteries.com/products
◯ RS485 to USB cable — for laptop monitoring
◯ Additional bus bar cables for parallel builds

NOT INCLUDED — BUY SEPARATELY:
◯ Inverter — required to run AC loads from the pack
  Recommended: Victron MultiPlus, Growatt SPF, 
  EG4 6000XP, or any 48V pure sine wave inverter
◯ Solar charge controller — if connecting to solar panels
  Recommended: Victron SmartSolar MPPT
◯ DC circuit breaker — recommended between 
  pack and inverter (125A–200A, 48V DC rated)
◯ DC fuse holder and Class T fuse — safety
◯ Ground rod and 10AWG ground wire — 
  required for safe installation
◯ Mounting hardware — if wall-mounting or 
  rack-mounting the enclosure
◯ RS485 communication cable to inverter — 
  if using CAN/RS485 protocol with your inverter

NOT INCLUDED — SERVICES:
◯ Installation — this is a DIY product
◯ Electrical permitting — check local codes
◯ Solar panel system — pack stores energy, 
  does not generate it

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COMPATIBILITY
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INVERTERS (confirmed compatible protocol):
✓ Victron (CAN/VE.Bus)
✓ Growatt (RS485)
✓ DEYE / Sunsynk (CAN)
✓ SMA (CAN)
✓ Any 48V inverter with LiFePO4 or custom 
  BMS communication profile

CHARGERS:
✓ Any 58.4V LiFePO4 charger — NaFP and 
  LiFePO4 share the same 3.65V/cell charge voltage
✓ MPPT solar charge controllers set to 58.4V 
  absorption, 54V float

MONITORING:
✓ Seplos V16 Bluetooth app (iOS/Android)
✓ BatteryMonitor V2.1.12 via RS485
✓ Any Modbus RTU compatible software

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MEASURED PERFORMANCE — CYCLE 1
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These are real numbers from the actual pack 
you are buying — not manufacturer specs:

· Charge current: 17.79A constant CC phase
· Temperature rise: <1°C above ambient
· Fault codes during charge: Zero
· SOH after cycle 1: 100%
· Cell balancing: In progress — 
  cycle data published on YouTube

Load test (measured Ah vs rated 210Ah): 
Publishing with Part 6 video

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SPECS
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Chemistry: NaFP Sodium Iron Phosphate
Configuration: 16S1P
Nominal Voltage: 48V (51.2V actual)
Capacity: 210Ah
Energy: ~10.7 kWh
Max Charge Voltage: 58.4V
BMS Continuous: 200A
Cycle Life: 4,000+ @ 80% DoD
Cold Operation: Rated to −40°C 
  (direct testing planned)
Thermal Runaway: None (NaFP chemistry)
Dimensions: 414 × 268 × 900mm (MASON-210)
Weight: Approximately 85kg assembled
Ships From: Aurora, Illinois 🇺🇸
Delivery: Q3 2026 — Founders Batch

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FOUNDERS BATCH
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First 20 units only. Every pack assembled, 
charged, and cycle-tested before it ships. 
Reserve with a $199 fully refundable deposit 
to lock your price and delivery position.

Questions? Email admin@saltrabatteries.com
Direct response from the builder — not a 
support ticket.