【Pre-order】Vatrer 12V 300Ah Heated Lithium Battery with 300A BMS and Cooling Fan for RVs
【Pre-order】Vatrer 12V 300Ah Heated Lithium Battery with 300A BMS and Cooling Fan for RVs
- Power High-Demand RV Loads with Confidence: A 300A BMS gives this 12V 300Ah lithium battery the continuous current capacity needed for high-power inverters and demanding RV appliances. It is built for users who need more than basic house-load support.
- Keep High-Current Operation Cooler: This lithium battery with cooling fan actively removes heat from the BMS during sustained high-current discharge. The design helps maintain stable operation when heavy loads run for extended periods.
- Stay Off-Grid Longer Between Charges: With 3840Wh of stored energy, this 300Ah RV battery provides a substantial reserve for refrigeration, lighting, cooking equipment, and other daily RV loads. Fewer recharge interruptions mean more usable time away from hookups.
- Restore Charging Automatically in the Cold: This 12V 300Ah self-heating lithium battery uses incoming charging power to warm the cells when temperature reaches 32°F below. Heating is handled automatically before normal charging resumes.
- Manage Battery Status from Your Phone: Bluetooth app monitoring gives you direct visibility into SOC, current, temperature, power, cycle information, and cell status. You can track battery condition and energy use without relying on voltage estimates alone.
- Recharge Around Your Travel Routine: Use shore power, solar charging, or a generator-based charging setup depending on where you are parked. Multiple charging paths make the battery practical for campgrounds, boondocking, and extended off-grid travel.
- Built-In Protection for Demanding Use: The integrated BMS manages over-current, short-circuit, over-charge, over-discharge, and temperature protection automatically. This added control is especially important in high-current RV and off-grid power systems.
- Expand Beyond a Single Battery: Support for up to 4S4P gives you room to build a larger battery bank as your solar, inverter, or backup-power requirements grow.
$74.99 USD
Unit price per
$259.99 USD
Unit price per
$19.99 USD
Unit price per
Run High-Demand RV Loads with 300A Continuous Output
When your microwave, coffee maker, air conditioner, or inverter is running, current demand can rise quickly. This Vatrer 12V 300Ah lithium battery uses a 300A BMS to deliver the high-current output needed for demanding RV electrical systems. You get strong continuous output from one 300Ah battery for everyday RV appliances and high-power inverter use.
Active Cooling for Sustained High-Current Loads
During extended high-current discharge, heat builds around the MOSFETs and other components inside the BMS. This lithium battery with cooling fan actively moves heat away from the 300A BMS board to reduce heat buildup during sustained loads. Its SPCC housing provides a durable enclosure for RV and off-grid power use.
3840Wh for Longer RV Days
From morning coffee to evening lighting, a day away from hookups can keep your refrigerator, fans, cooking equipment, and other appliances running for hours. With 3840Wh of stored energy, this 300Ah RV battery gives you a larger reserve for those daily loads and helps reduce how often you need shore power or generator charging. One large house battery also keeps your RV power setup simpler than managing several smaller batteries in parallel.
Cold-Weather Charging That Starts Automatically
On a freezing morning, charging can begin with the battery warming itself from the incoming charging source. This 12V 300Ah self-heating lithium battery directs charging input to the internal heating film when cell temperature is at below 32°F. Once the temperature rises above 41°F, heating stops and normal charging begins automatically.
Recharge from Shore Power Solar or a Generator
At a campground, you can recharge with a 14.6V 40A LiFePO4 charger. During off-grid stays, solar panels paired with an MPPT controller can turn daytime sun into stored energy for the next night. When solar production is limited, a generator can recharge the battery through a DC-to-DC charger.
Battery Status at a Glance in the Vatrer App
After several hours of running your refrigerator, inverter, and other loads, you can open the Vatrer app and see what is happening inside the battery. The app displays SOC, current, temperature, power, cycle information, and individual cell status. You can check remaining energy and see how your electrical loads are affecting the battery in real time.
Built-In Protection for Changing Loads and Temperatures
As appliances cycle on and off throughout the day, the current flowing through your RV system changes with them. The built-in BMS automatically manages over-current, short-circuit, over-charge, over-discharge, and high- and low-temperature protection as operating conditions change.
Room to Grow Up to 4S4P
If your RV or off-grid setup grows over time, the battery can be used in configurations up to 4S4P. This gives you room to expand beyond a single 12V battery as you add more solar capacity, inverter power, or backup energy storage.
Power Your Next Trip with More Confidence
A 300Ah battery should do more than store energy when your RV depends on it for high-current appliances, cold-weather charging, and long off-grid stays. This model combines a 300A BMS, active cooling, self-heating, and app-based monitoring in one battery built for demanding 12V power systems. Order yours today and put more usable power behind your next trip.
Tech Specs
The perfect upgrade from factory lead acid batteries. Beautifully designed. I love the built in screw attachment points for mounting. Only wished I had ordered two. After receiving mine they immediately went out of stock. Must have been a huge success.
We installed these over a year ago. You can see provided pictures in previous review I made when i first installed them. We love this battery and are honestly surprised they haven’t become more popular! Great job guys we might be ordering more soon, to replace our old battle born batteries that have degraded more than 50% in 5 years.
I just installed two of these batteries in my Rv. I absolutely love them! They look amazing and take up such a tiny space. I have been researching different brands for some time now. Seems like Vatrer creates a very good reliable product. This battery looks like artwork to me. You can tell it was made with care and precision. Just as the way my father taught me to live my life with pride in our work. So far I have run two full cycles and everything runs very smoothly. I love the fact that it even has a cooling fan on the BMS, a never before seen feature on any other battery. Great job guys!
I replaced two 100ah batteries in my airstream with this 300ah battery. I had to modify my box to get it to fit but this battery has been so much better than what came with my airstream. It performed great over a four day trip and I was able to see how much charge it had with my phone. This was the best upgrade I have made to my airstream, I no longer have to worry if I am running out of battery to run things on a four day trip. I only dropped to 70% with two cloudy days running lights, refrigerator and tv for two hours.
So far so good
Battery arrived quickly and I had it installed in my new RV. I really like the BMS app. Have not really stressed it yet, but in running fans and refrigerator, the battery has maintained 90+% charge from the 200w solar panel. Very happy with my purchase so far.
Well built but documentation is a little weak for folks that haven’t used lithium yet
Works great!
So far so good. Easy install, lightweight, replaced 2 lead acids on my 5th wheel and is way better. Like the bottom mounts no extra pieces to buy to secure it. Just screw it down. Took a long trip to FL and with only 204 watts of solar on the roof both boondocking stops on the way the batteries were at 100%. Enjoyed being able to make coffee and toast, internet, tv and use the microwave.
HAPPY WITH THE BATTERY SO FAR OTHER THAN THE BLUETOOTH BMS APP ALWAYS HAVING TO RECONNECT. THE BLUETOOTH DOESNT READ MORE THAN 10' FROM THE BATTERY.
FAQs
Yes. Our 300A BMS is designed for high-current RV systems and supports up to 3840W of continuous battery-side load, making it well suited to a 3000W inverter. For appliances such as air conditioners with startup demand, pair the battery with an inverter whose surge rating can handle the appliance startup load.
A 300A BMS handles much more current than a typical lower-output RV battery, and sustained current generates heat around components such as the MOSFETs. The cooling fan actively removes heat from the BMS area so the protection board can manage prolonged high-current discharge more effectively. The fan is there to cool the BMS electronics rather than the RV compartment or the battery cells directly.
The battery measures 15.51 × 8.27 × 11.69 inches and weighs 71.65 lb. Install it on a solid battery tray that can support the full weight, secure the housing against movement, and keep the cooling-fan opening unobstructed so air can move around the BMS during heavy use.
Connect a charging source that can provide more than 10A. When the cell temperature is below 32°F, we route the incoming charging power to the internal heater instead of the cells. Once the battery warms above 41°F, heating stops and normal charging starts automatically.
Weak winter sunlight may not provide the charging current needed to activate heating. If your solar system is producing less than the required input, use shore power or a generator with a DC-to-DC charging setup to provide a steadier charging source. Once the battery reaches its charging temperature, you can return to normal solar charging as conditions improve.
Yes, the battery can continue supplying power in temperatures below 32°F until the low-temperature discharge protection reaches its cutoff near -4°F. If temperatures are approaching that point, warming the battery compartment with your RV's heated interior or another controlled heat source helps keep your house loads available. The built-in self-heating function is intended for charging and does not continuously heat the battery from its stored energy while discharging.
The battery stores 3840Wh, so a constant 1000W load gives a theoretical runtime of about 3.84 hours before conversion losses. Real RV air-conditioner runtime will vary because the inverter consumes some energy and the compressor cycles rather than drawing exactly 1000W at all times. For planning, divide 3840Wh by the appliance's actual average wattage, then allow additional margin for inverter losses.
No. We designed this battery as a deep-cycle energy-storage battery for RV house loads, inverters, solar systems, and off-grid power rather than as a CCA starting battery. Keep a dedicated starting battery for the engine and use this 300Ah battery for the electrical loads that need long-duration power.
Yes. This battery supports configurations up to 4S4P. Two batteries in series create a 25.6V nominal system, while four in series create 51.2V; parallel connections increase available Ah capacity. Build the bank with the same battery model and bring the batteries to a closely matched state of charge before connecting them so the bank starts balanced.
The battery storage temperature is 14°F to 122°F. If your RV will sit where temperatures may fall below 14°F for extended periods, store the battery in a warmer protected location instead. During seasonal storage, disconnect unnecessary loads so parasitic devices do not continue drawing energy while the RV is parked.
Comparison
- Reliable Power, Empowering Lives.
- Vatrer specializes in LiFePO4 lithium batteries for golf carts, RVs, home energy storage, and off-grid applications, designed for reliable performance and long-term use.
