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PowerTex Batteries' Lithium Iron Phosphate LiFePO4 Batteries are high performance, maintenance free, eco-friendly and very light! These Lithium-Ion LiFePO4 batteries are the perfect Sealed Lead Acid drop-in replacement since they are 1/2 to 1/3 the weight, have 2500-7000 cycles (compared to 300 or so from SLA) and require no maintenance. Applications vary but mostly used in RV, Camper, Marine, Off-Grid, Electric Scooters (Razor Scooters), Fish Finders, Solar, Alarm Systems, and more! Battery Features 100% pre-delivered inspection, with safe and reliable long-term quality assurance. Highly-waterproof designed and rated above IP65, this battery can be used normally under rainy conditions in the outdoors. Longer service life than lead acid batteries, with a life expectancy of about 5-10 years. Low self-discharge rate, a fully charged lithium battery will perform after a year without use. Maintenance free, easy to use. Eco-friendly without any corrosive liquids or harmful heavy metals. Intelligent (BMS) battery management system electronic chip can monitor battery status in real time, auto-detection for abnormal voltage and capacity. LCD screen to track days in use, voltage & capacity. Over-charge protection Over-discharge protection Over current protection Cell balancing function Over temperature protection