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Temgo 12V 300Ah Heated Touchscreen Lithium Battery with Bluetooth for RVs, motorhomes, Off Grids, Trailers & Camper

SKU: 12V-300AH-ORJR-2
12 reviews
Regular price $569.99

    Built for Heavy Continuous Loads: Upgraded 200A BMS enables up to 2560W continuous power output. Capable of powering heavy loads including trolling motors, RV appliances and off-grid systems

    Cold-Weather Reliability: Equipped with BMS-managed automatic self-heating, this 12V 300Ah LiFePO4 battery turns on heating below 32°F. Heating stops at 41°F to allow regular charging. Its low temperature cutoff protection allows for more flexible use.

    Smart Monitoring: Built-in LCD screen and Bluetooth for real-time battery status monitoring, allowing on-site checks via the screen and remote oversight via the Temgo App for ultimate convenience.

    Extended Battery Longevity: Grade A cells offers up to 5000 cycles @100% DOD and a 10-year service life. Designed for frequent heavy deep cycling, it brings outstanding long-term value.

    Reliable After-Sales Support: Accessible 24/7 online service. Get 5-year technical support whenever you have questions about installation and operation.

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Services and Benefits

Free Shipping

Free standard shipping on all orders
Estimated to be delivered within 2-5 business days.
Exclusion of Hawaii (HI), Alaska (AK), and Puerto Rico (PR)

Free Returns

30 Days Hassle Free Returns

5 Years Lifespan

Backed up by techical support within 24hrs.

Built-In Heating, Reliable In Cold Climates.

The Temgo 12V 300Ah LiFePO4 Battery features an advanced self-heating system for reliable low-temperature charging. It automatically activates heating when charging below 32°F (0°C), and stops heating once the temperature exceeds 41°F (5°C) to resume normal charging—protecting battery health and boosting charging efficiency. With a low-temperature discharge cut-off at -20℃ ± 4°C (-4°F ± 7.2°F), it ensures safe, consistent power output even in extreme cold, eliminating cold-weather charging and usage worries.

Temgo 12V 300Ah self lithium battery for any climates

Temgo 12V 300Ah self lithium battery for any climates

Clear Metrics, Effortless Monitoring

Check remaining energy via the TEMGO App before operating power-hungry devices or planning overnight power consumption. Bluetooth provides real-time SOC, voltage, current and temperature readings, and the built-in LCD touchscreen allows direct data viewing on the battery unit. Remotely monitor battery status and arrange energy consumption reasonably, and you will never need to open the storage compartment.

Built-in LCD screen and APP Monitoring

Built-in LCD screen and APP Monitoring

Optimized Output, Greater Usable Energy.

Traditional lead-acid batteries only deliver a fraction of their rated capacity, cutting your runtime short. Our TEMGO LiFePO4 battery supports 100% DOD, unlocking significantly more usable energy within the same battery footprint. Power your equipment for much longer, without adding extra batteries to your system.

Temgo lithium battery with greater usable energy

Temgo lithium battery with greater usable energy

Large Capacity, Manage Heavy Loads

Boasting a 12V 300Ah capacity, this Temgo self-heating battery delivers ample stored energy to sustain heavy continuous loads. An upgraded 200A BMS provides up to 2560W continuous power for trolling motors, RV appliances and off-grid hardware. Designed for broad usability, it works reliably for year-round RV living, marine outings, cold-climate solar installations and essential off-grid power needs.

Temgo 12V 300Ah lithium battery suitable for various heavy continuous loads scenarios

Temgo 12V 300Ah lithium  battery suitable for various heavy continuous loads scenarios

Scalable Design, Expand On Demand.

One battery can power your travel trailer today, but larger cabins or extended solar arrays need extra energy storage in the future.
This TEMGO LiFePO4 allows up to 4-series and 4-parallel connection, creating a 51.2V, 61.44kWh energy system at maximum.
Start with a basic 12V system and expand step by step, without replacing your current battery bank.

Temgo 12V 300Ah lithium battery expandable up to 51.2V, 61.44kWh energy

Temgo 12V 300Ah lithium battery expandable up to 51.2V, 61.44kWh energy

Flexible Input, Multiple Charge Sources

Grid power isn’t always within reach, whether you’re camping off-grid or running home energy storage.
This LiFePO4 battery can recharge through an AC charger, solar system, or generator paired with a 12V AC-DC charger.
Harvest solar energy during the day for RV and household use, or use an AC charger or generator to top up power when sunlight is lacking.

Temgo 12V 300Ah lithium battery with multiple charge ways

Temgo 12V 300Ah lithium battery with multiple charge ways

Specifications
    Dimensions & Weight 15.12*9.76*7.64 inch / 54.67LB
    Capacity 300 Ah
    Nominal Voltage 12.8 V
    Energy 3840 Wh
    Recommended Charge Voltage 14.2V - 14.6V
    Recommended Charge Current 60A (0.2C)
    Battery Management System 200A
    Max. Continuous Load Power 2560W
    Charge Temperature Range -20℃ to 50℃ / -4°F to 122°F
    Discharge Temperature Range -20℃ to 60℃ / -4°F to 140°F
    Low Temp Cut-off Protection (Discharge) -20℃ ± 4℃ / -4°F ± 7.2°F
    Terminal M8
    Self Heating Function Activates below 0℃, turns off at 5℃

Customer Reviews

Based on 12 reviews
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P
Pat Slagle
So far I haven’t had a chance to really test it out but I think/hope it will be great

So far I haven’t had a chance to really test it out but I think/hope it will be great.

M
M.N.A.S.N
Self Heating 12V 300ah battery (UPDATE 2026)

I purchased this battery in July 2025. I was going to do a 6 month review and forgot. Anyway I guess a 10 month review is good enough. So far I have cycled it 72 times has and to this day continues to maintain a 0.0001V difference between cells. Easily powers my 12V devices in my Class B for more than 72 hours before charging to full. The self heating mode works well as I charged it once when temperatures were below freezing. The Bluetooth is amazing as is this battery.

A
Anonymous
Work well so

Work well so far

A
Anonymous
Excellent quality batteries

Excellent quality batteries, Got all the bells and whistles, auto warming, Bluetooth, great value for price and the color is great

M
M.N.A.S.N
Self Heating 12V 300ah battery

I purchased the self heating 12V 300ah a couple of months ago in July. It was installed outside underneath the carriage of my Class B RV. This battery replaced my original factory 200ah battery and is almost 100 pound lighter and delivers all the power I need. To this day I only use it to power all my 12V appliances and lights which includes a 6 cu.ft. fridge. So far I have used it without charging it for more than 72 hours over 3 days that rained and was cloudy . So far it has exceeded my expectations. I will write a 6 month update review to see how reliable it will be. Right now this is doing what other more expensive dollars promise they will do but for $2000 less. The blue tooth on this battery works great but you have to be within 15 feet of the battery. It is too early for me to make a recommendation but I am using it daily and charging it daily and it works great. I don't discharge it all the way down but after 72 hours of use I still head 24% capacity. I don't let it get below 20% just my preference.