【Grade-A Cells & Upgraded 100A BMS】VATRER POWER 100Ah self-heating LiFePO4 batteries with Automotive Grade A LiFePO4 cells have uncompromising quality and higher energy density with better stability, which makes it possible to ensure long-term recycling. And highest-level safety is based on UL Testing Reports for the cells inside the battery and upgraded BMS with heating pads to protect it from overcharging, over-discharging, over-current, and short circuits with excellent self-discharge rate. 【APP MONITORING】 Our batteries have listened to the suggestions of many users, so we have made a special battery with a communication function so that you can easily monitor the status of your battery in real time. This includes current, voltage, temperature, cycle, etc. Just download our APP on the phone according to the instructions. It brings great convenience to the user experience. 【Automatic Self-Heating】The 12V 100Ah LiFePO4 battery is equipped with an automatic self-heating function that will be activated by the BMS when the battery is connected to a charger at temperatures below 32°F. Heating will stop when the battery temperature reaches 41°F, and then the battery will start charging normally. This feature makes it possible to charge the battery at low temperatures without any issues. The battery’s operating environment is no longer restricted, making it more flexible and convenient to use. 【Safety & Unlimited Solar Energy】 The stable Lithium Iron Phosphate chemical structure makes LiFePO4 battery not burn or explode even at high temperature, short circuit, impact and drop. Highest-level safety based on UL Testing Certificate for the cell inside the battery. And it does not contain any heavy metals and rare metals and is more energy efficient, clean, green charging , which called green battery. 【Multi-Application】 With no acid in the lithium ion battery, you're able to safely mount in any position. This makes li-ion batteries perfect for marine, RV, campers, travel trailer, and off-grid applications! NOTE: The battery is suitable for energy storage rather than start-up. Please consult us in advance if needed. 【Kindly Attention】This battery with self-heating can not be connected with the regular version 12V 100Ah battery model in series or in parallel. The battery will activate the heating function only when the charging current is more than 10A.