Your cart
There are no more items in your cart
SUB‑ZRO Sodium‑Ion Batteries – Low Temperature Performance Redefined
The SUB‑ZRO range from Beyond Batteries is designed for exceptional low temperature performance, making them the ideal solution for off‑grid solar PV systems in cold and challenging climates.
Sodium‑ion technology retains most of its capacity at low temperatures and does not require heating pads, solving the major issues faced with both lead‑acid and LiFePO₄ batteries in winter conditions.
Each battery offers:
Flexible configurations – connect up to 16 in parallel, or up to 4 in series (48V max), giving you a massive range of options to suit any system.
Long lifespan – up to 4500 cycles at 70% depth of discharge for enduring performance.
Wide operating range – charge safely down to ‑20°C and discharge as low as ‑30°C.
High power output – 250A maximum discharge current for demanding applications.
Lightweight design – just 24.2kg, under half the weight of an equivalent lead‑acid gel battery.
Easy monitoring – Bluetooth BMS connectivity with a dedicated app for real‑time data and management.
Safe shipping compliance – delivered at less than 30% charge in line with regulations. Charge to the correct setpoints before putting into service.
With proven efficiency, outstanding low temperature performance, and robust cold‑weather resilience, SUB‑ZRO sodium‑ion batteries set a new standard in reliable off‑grid energy storage.
FREE UK Mainland Shipping
Contact us about our free custom off-grid system design service.
