ECO-WORTHY 2Pack 12V 100Ah LiFePO4 Battery with Bluetooth, Low-Temp Protection & Built-in BMS, 15000+ Deep Cycles, Group 24，for RV, Marine, Motorhome, Off-Grid

Real-Time Monitoring via Bluetooth 5.1:Monitor battery voltage, current, capacity, and health status in real time through the ECO-WORTHY App. Enables convenient battery management from your mobile device Low-Temperature Charging Protection:Advanced BMS automatically stops charging when temperature drops below -7°C (19.4°F) and resumes above 0°C (32°F). Perfect for cold environments like RVs, cabins, off-grid systems, and marine use in winter Enhanced Cell Stability with Metal Clamps:Internal metal clamps securely hold LiFePO4 cells in place, reducing vibration-induced damage and ensuring structural integrity. Extends battery lifespan and enhances safety during mobile use in RVs, boats, and overlanding Comprehensive BMS Safety Protection:Built-in BMS provides full protection against overcharge, deep discharge, overload, overheating, and short circuit. Also features low self-discharge rate for longer shelf life Compact, Lightweight & Flame-Retardant Design:Size: 10.24" x 6.61" x 8.43". Weighs only 23.15 lbs-about 1/3 the weight of lead-acid batteries. Flame-retardant casing adds an extra layer of safety. Ideal for space-saving RV/campervan installation and portable outdoor power. Expandable Power & Wide Application:Supports series or parallel connection (up to 4P2S/2P4S) for maximum 10.24KWh capacity. Perfect for RV, caravan, marine/boat, overlanding, off-grid systems, and backup power.