Weize Smart Lithium Iron Phosphate Battery integrates smart battery management system (BMS) not only protects this 12-Volt 100Ah LiFePO4 battery from various abnormal conditions but monitors and manages the charging/discharging process. The state-of-the-art battery cells ensure a long cycle life and exceptional discharge performance. Compare to heavy-duty lead acid battery, this lightweight, auto-balanced, ultra-safe, long-cycle-life lithium-ion battery is the perfect for your outdoor using.<br><br> Auto-balance: connects multiple batteries in parallel safely without internal state non-uniformity issues.<br> High quality: state-of-the-art battery cells ensure a lifespan of more than 4000-cycles, 100 Amp continuous discharge currentand a wide range of operation temperature<br> Please do not string the battery in series, it is made only for 12-Volt parallel connections using the batteries of the same manufacturer and model.<br> Terminal size: M6, Diameter of the screw: 1/3 inch.<br> Parcel Included: 1 x Battery (terminal screws included, but no any other accessories).<br><br> Note: make sure to tighten the battery terminals securely and use appropriate size wiring, or it could result in overheating and battery damage.<br><br>Troubleshooting<br>When the battery voltage is too low to reliably power loads, please charge the battery as soon as possible.<br>If the battery temperature is too high or too low, please cut off all connections and let the battery stand by until it cools down or warms up to room temperature..<br>When too high of a current passes through the battery and causes battery failure, please disconnect the load until the battery resumes normal operation.<br>If the battery fails due to a short-circuit, please remove the short circuit immediately and the battery will resume normal operation.<br>When the battery voltage drops to OV, please activate the battery using an external charging source that has a lithium battery activation function.