【LiFeYPO₄ Technology – Superior to LiFePO₄】 Built with advanced water-based lithium-ion with yttrium (LiFeYPO₄) chemistry, offering 3–5× higher energy density than traditional lead-acid batteries. Compact size, only 37.4 lbs, perfect for conversion and upgrade applications. 【Extreme Temperature Ready】 Winston Battery’s internal cell chemistry is engineered to perform from -45°C to 85°C, but please note: the complete battery pack (with BMS) is safely rated for -20°C to 60°C under load, due to BMS protection limits. This ensures safe, stable performance in most extreme environments—from freezing winters to scorching heat. Whether you're off-grid in Alaska or camping in Arizona, Winston keeps running strong. 【Smart BMS & Low-Temp Protection】 Equipped with a high-performance Battery Management System (BMS) that ensures protection against overcharge, over-discharge, short circuit, and temperature extremes. Operational from -20°C to 60°C under load. 【20-Year Lifespan & Ultra-Low Self-Discharge】 Engineered for longevity: over 7000 cycles at 70% DOD, with lifespan exceeding 20 years. Industry-leading 1.5% self-discharge rate, ideal for long-term storage. 【Unmatched Safety & Durability】 Features a custom-engineered plastic shell, waterproof, wear-resistant, and impact-resistant. Certified IP65, perfect for outdoor and marine environments. 【Eco-Friendly & Globally Certified】 Compliant with UL, CE, RoHS standards. No heavy metal pollution—green production, green use, green recycling. 【Versatile Applications】 Dual-use for both energy storage and engine starting. Ideal for Marine, RVs, ice fishing, solar systems, emergency backup, electric scooters, boat, and more.al R&D in China + California and is defined for long lifespan, high battery life, lightness and safety 【Global R&D – China & California】 Developed by joint R&D teams across China and California, Winston Battery is defined by long lifespan, high performance, lightweight, and safety. 🔎 Please refer to the battery datasheet for BMS temperature specifications. We aim for full transparency to avoid misunderstandings. TSWB-LP12V100AHA water-based lithium ion with yttrium is a single 12V battery. The battery can be used as backup battery or vehicle starter battery. The outside package is carton, 1 pcs per carton.