China’s Rept Battero Unveils Revolutionary Sodium Battery Storage Technology

When a battery can operate at 50 degrees below zero, hold a charge for three decades, and survive a nail driven through its core without exploding, the conversation about energy storage shifts from what is possible to what is being hidden. China’s Rept Battero has done exactly that with its new Wending 320 Ah sodium-ion cell, unveiled at SNEC 2026 in Shanghai. This breakthrough marks a significant shift in the energy storage landscape. The sodium-ion cell, designed for utility-scale storage and deployment in extreme climates, challenges the long-standing dominance of lithium batteries. Offering superior performance in terms of temperature tolerance,…