Vatrer 12V 300Ah Self-heating Lithium 300A BMS with Cooling Fan - 10 PACK D-12V-300AH-300A-BT-H-Black-10-KB

More Power. Fewer Limits When a cold morning, a long travel day, or an evening of heavy appliance use pushes an ordinary battery too far, the Vatrer 12V 300Ah lithium battery gives you 3840Wh of rated energy to keep your RV routine moving. You get more time between charges without planning every stop around hookups or cutting back on the comforts you brought along. 300A BMS for Heavy Loads Running an inverter while the refrigerator, water pump, and lights are already on can overwhelm a lower-output battery. This 300Ah lithium battery delivers up to 300A of continuous discharge current and supports a maximum load of 3840W, while the built-in BMS guards against overcharging, over-discharging, overcurrent, short circuits, and unsafe temperatures. Active Cooling for the BMS Sustained high current creates heat around the MOSFETs and other power-handling components inside the BMS. The 12V 300Ah battery with cooling fan actively removes heat from the 300A protection board, helping it operate more safely and consistently when your inverter or other high-draw equipment runs for extended periods. Cold-Weather Protection Built In Charging LiFePO4 cells while they are too cold can cause permanent damage, even when the rest of your system appears to be working normally. The Vatrer 12V 300Ah lithium battery stops charging below 32°F and stops discharging below -4°F, giving your battery an extra layer of protection during winter storage and cold-weather travel. Self-Heating Below Freezing When cell temperature drops below 32°F, the 12V 300Ah self-heating lithium battery automatically activates its heating system after you connect a compatible charger supplying more than 10A. The heating film uses charging current to warm the battery, then switches off at 41°F so normal charging can resume without removing the battery or using an external heating blanket. Check Battery Status by Phone Instead of opening a battery compartment or guessing from a basic voltage reading, you can view the 300Ah lithium battery from the Vatrer app. Check state of charge, voltage, current, power, temperature, cycle count, protection status, and individual cell voltage, then manage the discharge switch directly from your phone. 3840Wh for Daily RV Use With 3840Wh of rated energy, this Vatrer 12V 300Ah lithium battery can power a 1000W appliance for up to 3.84 hours, a 700W cooker for about 5.48 hours, or a 100W fan for up to 38.4 hours. Actual runtime will vary with inverter efficiency, startup surge, temperature, wiring loss, and appliance duty cycle. Recharge Three Different Ways Your charging options should not disappear when shore power does. Recharge this 300Ah lithium battery in approximately 7.5 hours with a 14.6V 40A LiFePO4 charger, use an 850W or larger solar array with an MPPT controller for about 4.5 peak-sun-hours under ideal conditions, or pair a generator with a compatible 40A DC-to-DC charger for roughly 7.5 hours. Expand Up to 4S4P If your power needs grow beyond one