SOK 48V 100Ah 5kWh battery

SOK 48V 100Ah Server Rack Battery (SK48V100N) – Compact, Stackable LiFePO₄ for Off-Grid Homes & Hybrid Systems

Datasheet

Installation Instructions

The SOK SK48V100N is a 51.2V 5120Wh lithium battery in a compact 3U server rack footprint. If you're building out a hybrid or off-grid house system with Victron, Deye, Sol-Ark, Growatt, SMA, Schneider, LuxPower, Sunsynk, or pretty much any of the common stacked-battery inverters, this is the unit designed to slot straight in — stack up to 48 in series and scale your storage to whatever the system demands. Built-in self-heating handles cold weather automatically, so frosty Central Otago mornings or alpine installs don't shut the battery out of the charging window like they would with a standard rack battery.

What sets the SK48V100N apart is the smart side of the design. The BMS supports Bluetooth OTA firmware upgrades — so when SOK releases an improvement or adds a new inverter protocol, you update from your phone instead of pulling batteries out of the rack. The inverter protocol itself is selectable via Bluetooth, with support for both CAN and RS485 communication across an extensive brand list — Victron, SMA, SOFAR, Studer Innotec, Voltronic, RCT, MPP, Alphaoutback, PYLON, Sol-Ark, Solis, Goodwe, Deye, Growatt, SAJ, Megarevo, INVT, Sermatec, TBB, MUST, Sunsynk, SRNE, Schneider, and LuxPower. That means one SKU works across the major brands — and crucially, if you change inverters down the track, your batteries come with you. There's also a 100,000µF pre-charge circuit built in to prevent BMS damage during inverter start-up.

Automatic master/slave assignment handles multi-unit configuration without you needing to set DIP switches or assign addresses manually — just rack them up and they sort themselves out. Custom-molded M8 terminals accept wiring from multiple directions for clean rack installs, there's a physical on/off switch for safe servicing, and the 19" steel enclosure is built for proper rack-mount installations. SOK has been one of the most trusted names in the global off-grid community for years, with a reputation built on transparency, build quality, and batteries that actually do what the spec sheet says. We import direct from the factory and back every unit with a 10-year warranty — a genuine vote of confidence in the product. If you want a 48V rack battery that's properly thought through — not just rebadged generic hardware — this is it.

Key Features

• 51.2V 100Ah / 5120Wh capacity
• Compact 3U rack-mount design (486 × 431 × 133mm, 45.5kg)
• Internal self-heating with automatic low-temperature charge protection
• Bluetooth OTA firmware upgrades — no need to remove the battery
• Bluetooth-selectable inverter protocol — 25+ supported brands across CAN and RS485
• 100,000µF pre-charge circuit protects the BMS during inverter start-up
• Automatic master/slave assignment — no DIP switches or manual addressing
• Custom-molded M8 terminals for multi-direction wiring
• Genuine Grade A 100Ah prismatic LiFePO₄ cells
• SOK custom-designed Smart BMS
• Max continuous discharge: 100A (120A peak for 1 minute)
• Recommended charge current: 50A (max 100A)
• Physical ON/OFF switch
• SPCC+SGCC steel enclosure, IP20 rated
• Stackable up to 48 units in series for large-scale systems
• Over-charge, over-discharge, over-current and short-circuit protection
• High and low temperature disconnects
• 10-year manufacturer-backed warranty

Why It's a Smarter Buy

• True 3U size — fit more capacity into the same rack space
• 10-year warranty — longest in its class, real confidence from the manufacturer
• One SKU works across 25+ major inverter brands — futureproof if you change kit
• OTA upgrades mean the battery gets better over time, no service call needed
• Pre-charge circuit protects your investment from a common, expensive failure point
• Auto master/slave setup saves real install time on multi-battery banks
• Built-in heating keeps the battery working through NZ winters
• Backed by SOK's reputation, not a no-name factory rebrand