Vatrer 12V 300Ah Self-heating Lithium Battery 300A BMS with Cooling Fan
Vatrer 12V 300Ah Self-heating Lithium Battery 300A BMS with Cooling Fan
Vatrer 12V 300Ah lithium battery helps you travel farther with less power anxiety, keeping RV essentials running through cold mornings, long stops, and off-grid nights.
- 3840Wh RV Power:The Vatrer 12V 300Ah lithium battery delivers 3840Wh of rated energy, helping you run RV essentials longer between charges and reduce hookup stops.
- 300A High-Output BMS:With 300A continuous discharge and 3840W max load power, this 300Ah lithium battery supports heavier inverter loads and multiple RV appliances running together.
- Cooling Fan for BMS Stability:The 12V 300Ah battery with cooling fan actively cools the 300A BMS board, helping reduce heat buildup during sustained high-current use.
- Self-Heating at 32°F:The 12V 300Ah self-heating lithium battery starts heating below 32°F with a compatible 10A+ charger and resumes normal charging at 41°F.
- Low-Temp Cutoff Protection:Built-in low-temp protection stops charging below 32°F and discharging below -4°F, helping protect LiFePO4 cells during cold-weather use.
- App-Based Battery Monitoring:Use the Vatrer app to check SOC, voltage, current, power, temperature, cycle count, and cell status directly from your phone.
- 3 Flexible Charging Methods:Recharge in about 7.5 hours with a 14.6V 40A LiFePO4 charger, about 4.5 peak-sun-hours with 850W solar + MPPT, or roughly 7.5 hours with a generator and 40A DC-to-DC charger.
- Expandable Up to 4S4P:Build beyond one battery with up to 4S4P expansion, reaching 51.2V, 1200Ah, and 61.44kWh in a properly designed system.
$74.99 USD
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$259.99 USD
Unit price per
$19.99 USD
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Estimated delivery between Sep 03 and Sep 08. Order within .
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 battery, the Vatrer 12V 300Ah lithium battery supports systems with up to four batteries in series and four in parallel. A properly designed 4S4P setup can reach 51.2V, 1200Ah, and 61.44kWh of rated energy when built with matching batteries, balanced connections, correctly sized cables, busbars, and fuses.
Make the Upgrade Before Your Next Trip
Built with LiFePO4 cells, this 300Ah lithium battery is rated for 5000+ cycles under proper use, giving you a longer-lasting alternative to lead-acid power with fewer replacement interruptions over the years. Choose the Vatrer 12V 300Ah lithium battery now and start your next journey with a power system that feels ready instead of uncertain.
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. This Vatrer 12V 300Ah lithium battery is a strong lead-acid replacement when your battery space, wiring, charger, and inverter are set up for LiFePO4 use. You get 3840Wh of rated energy in one battery, with deeper usable capacity and 5000+ cycles, so you are not swapping heavy lead-acid batteries every few seasons.
Your RV converter needs a LiFePO4 charging profile to charge the Vatrer 12V 300Ah lithium battery properly. A 14.6V LiFePO4 charger is the clean match, while older lead-acid converters that stop around 13.6V may leave capacity unused. Equalization or lead-acid repair modes should stay off.
A single battery supports up to 300A continuous discharge and 3840W maximum load power, so a 3000W-class pure sine wave inverter is a practical match when the wiring, fuse, and surge rating are sized correctly. High-startup appliances still need enough inverter surge capacity, especially compressors, pumps, and microwave loads.
No. The cooling fan is built to cool the 300A BMS protection board, not directly chill the LiFePO4 cells. Heavy current creates heat around MOSFETs and other BMS components, and the fan helps move that heat away so this Vatrer 12V 300Ah battery with cooling fan can stay more stable during long high-load runs.
No. The self-heating system uses incoming charging current after a compatible charger supplies more than 10A. The Vatrer 12V 300Ah self-heating lithium battery does not simply wake up and drain itself just because the night gets cold.
Yes. Solar can trigger self-heating when the MPPT controller sends more than 10A of charge current and the cell temperature is below 32°F. The battery warms first, then resumes normal charging at 41°F, which helps protect LiFePO4 cells during cold morning solar recharge.
The Vatrer app already shows SOC, voltage, current, power, temperature, cycle count, protection status, and individual cell voltage. A separate shunt is only useful when you want one dashboard for the entire RV electrical system, especially after adding multiple batteries, solar input, and large inverter loads.
Yes. The Vatrer 12V 300Ah lithium battery supports up to 4S4P expansion when the system is built correctly. Use the same battery model, keep each battery at a similar state of charge before connection, and use balanced cables, busbars, and fuses so each battery shares current more evenly.
Yes, as long as you store it with the load disconnected and enough charge left in the battery. The low-temperature cut-off helps protect the cells below freezing, while app monitoring makes it easier to check SOC before and after storage instead of guessing from voltage alone.
No. This Vatrer 12V 300Ah lithium battery is designed as a deep-cycle house battery for steady power, not as a starter battery. Use it for RV appliances, inverters, solar storage, and backup loads, while keeping a dedicated starting battery for engines or generators.
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- 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.
