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Best 300ah lithium batteries - Holiday Sale 2025

Last Updated - December 14, 2025

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

yeagulch

2 Pack 12V 300Ah LiFePO4 Battery 200A BMS 3840Wh Up to 6000+ Deep Cycle Lithium Iron Phosphate Battery Perfect for RV Camping Marine Solar Energy Storage Backup Power

yeagulch

$730.96

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Main highlights
- Note and Customer Service: This 300 ah lifepo4 battery 12v is not suitable for starting gasoline engines. Under Various Temp/Humidity Measurement Methods And Instruments, Voltage And Current May Deviate By 1% to 5%. Charge/Discharge Battery Once Every 6 Months To Prevent Damage From Disuse. If you have any questions about 12v 300ah lithium iron battery, please contact us.
- Multiple Protection BMS: The 12.8V 300Ah LiFePO4 battery is equipped with a built-in 200A BMS (Battery Management System) that safeguards against overcharge, over-discharge, overcurrent, and short circuits, while delivering an exceptional low self-discharge rate. Integrated with high/low temperature cut-off protection, it automatically halts charging/discharging when temperatures exceed critical thresholds.
- Ideal Choice for Outdoor Applications: The 12V 300Ah lithium battery, boasting IP67 waterproof certification, is engineered to excel in extreme weather conditions. Its rugged design combines high energy density with robust safety features, making it the perfect power solution for a wide range of scenarios: RVs, solar energy storage systems, marine electronics, fishing expeditions, ice fishing setups, recreational vehicles, and off-grid living.
- 2 Pack 300Ah Lifepo4 Battery: 300 amp hour lithium battery 12v offer a higher energy density compared to lead-acid batteries, but only have 1/3 the weight of the lead acid battery at the same capacity. This means 12v 300ah lifepo4 lithium battery can store more energy per unit of weight and volume, making them more efficient and space-saving for energy storage applications.
- 12v Deep Cycle Battery: Lifepo4 battery 300ah have extended cycle life. 12v 300ah battery can withstand a high number of charge-discharge cycles, often exceeding 6000 cycles to 80% depth of discharge, which significantly outlasts traditional lead-acid batteries.
$730.96
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

VATRER POWER

12.8V 300Ah Bluetooth Self-Heating LiFePO4 Lithium Battery, Low Temp Cut off, Built-in 200A BMS,Rechargeable 3840Wh Energy Lithium Battery for RV, Marine, Solar Panel, Camping, Backup Power, Off-Grid

VATRER POWER

$729.99

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Main highlights
- 【Warm Prompt】 The 12.8V 300Ah Self-Heating LiFePO4 battery cannot be used as a starter battery or a golf cart battery.
- 【Ultra-Long Cycle Life: Outlasts Lead-Acid Batteries】This 12V 300Ah LiFePO4 battery delivers exceptional durability with over 5000 charge-discharge cycles at 100% depth of discharge—far exceeding the lifespan of traditional lead-acid batteries. Perfect for long-term energy storage needs, it’s a cost-effective choice for continuous use.
- 【Smart APP Monitoring: Real-Time Battery Insights at Your Fingertips】 Designed with user experience in mind, this lithium battery allows you to monitor its status in real time via our dedicated APP. Track key metrics like current, voltage, temperature, and cycle count effortlessly—simply download the APP as instructed and stay informed about your battery’s performance anytime, anywhere.
- 【Lightweight & High Energy Density: Superior to Lead-Acid】 Weighing only 1/3 of lead-acid batteries with the same capacity, this lithium battery offers higher energy density. It stores more energy per unit weight and volume, making it efficient and space-saving for various energy storage applications.
- 【Built-in Self-Heating Function: Reliable Performance Even in Low Temperature】Equipped with a self-heating function, this battery ensures smooth charging and discharging in low temperatures, shields itself from cold-induced damage, keeps your devices running steadily in low temperature, and enhances overall performance consistency—making it ideal for cold-climate use.
- 【Advanced BMS: Full Protection for Safe Use】 Equipped with an enhanced Battery Management System (BMS), it safeguards against overcharging, over-discharging, low-temperature charging, overcurrent, and short circuits. Automatically balances cells, ensuring stable performance and reliable operation.
$729.99
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

NewtiPower

12V 330Ah Small-Volume LiFePO4 Lithium Battery,200A BMS,10000+ Deep Cycle Lithium Iron Phosphate Battery Great for Winter Power Shortage, RV, Marine and Off Grid Applications

NewtiPower

$349.99

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Main highlights
- 【Multiple applications & As Long As You Can Imagine】NewtiPower lithium iron phosphate battery can be used in the following areas: Home energy storage system, UPS backup, lighting, digital/CCTV cameras, portable TV,DIY loud speaker, 12V router, air pump, fish finder, golf car, RV & camper, Houseboat, Travel Trailer, Dump Trailer and more. In a word, where you need electricity, you can use it! (Please note the output DC voltage is 12V)
- 【More Cycles Times】NewtiPower is a professional lithium battery production factory with no intermediaries to get differences.We have strict factory standards and are very confident in providing a 10-year (non human fault).10000+ cycles times which means you will save 1/2 of power compare with using the utility power. Widely used for solar system, RV trip and outdoors activities.
- 【More 384Wh & Smaller Volume】NewtiPower spent one year on developing this Battery and adopting A cells with higher energy density, with smaller volume(L x W x H):( 13.7 x 7.6 x 9.8 Inch) and more battery capacity. We're sure you can't find any battery with the same power and smaller volume as this one.We believe that NewtiPower Lithium Iron Phosphate Battery will be the battery that meets ALL your expectations!
- 【Intelligent Charging Protection】NewtiPower LiFePO4 battery has built-in 200A BMS (battery management system) to protect the battery from overcharge, overdischarge, overcurrent and short circuit with excellent self discharge rate. Built in temperature protection function, BMS cuts off charging 32℉ (0℃). High temperature cut-off can prevent charging from exceeding 158 ℉ (70 ℃).Our BMS supports both series and parallel connections, but we recommend not exceeding 6 batteries.
- 【High Energy Density &100% Real Capacity】NewtiPower 12V 330Ah lithium iron phosphate battery weighs only 56 lb, half the weight of lead-acid battery and twice the capacity of lead-acid battery. It is easy to move and install. The available capacity of our LiFePO4 battery is 100%, compared with other brands of batteries, which only provide 60% ~ 80% of the capacity. We are not afraid that you test with a capacity test instrument after receiving the battery. We have great confidence in our products!
$349.99
4
Best Value
32% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

HumsiENK
32% Off

HumsiENK 12V 300Ah (314Ah) LiFePO4 Lithium Battery Mini Size, Bluetooth 200A BMS, 15000+ Deep Cycles, Low-Temp Protection – for RV, Marine, Solar, Off-Grid, Home Backup (Compact & Lightweight)

HumsiENK

$489.99

$729.00
(32% Off)

More Details
Main highlights
- 🛡️ 【200A BMS & Low-Temp Protection】 – Built-in 200A BMS ensures stable power output, while low-temperature cut-off prevents charging below freezing, extending battery life. A high-temperature cut-off prevents charging above 158°F (70°C), making it safer than lead-acid alternatives. Perfect for both indoor and outdoor applications.
- 🔋【Lightweight & Compact Design】 – Only 59.5 lbs (40% lighter than lead-acid) with 15.1×9.7×7.6 inches MINI size—fits RVs, boats, and tight spaces effortlessly. Drop & shock-resistant for durability. Compared with lead-acid and AGM, SLA batteries, it reduces space and weight(59.5lbs) by more than 50%, easy installation and no complicated wiring requirement, making it your first choice for efficient solar energy storage systems and RV camping.
- 🔋【 High Capacity, Hassle-Free:】 This HumsiENK 12V 314Ah LiFePO4 battery delivers an impressive 4.01 kWh of energy, surpassing three 12V 100Ah lithium batteries connected in parallel. Ideal for RVs, solar systems, marine use, and more. This 12V 314Ah LiFePO4 battery delivers 4.19kWh of energy (30x longer lifespan than lead-acid) with 15,000+ cycles at 60% DOD.
- 📱【Bluetooth 5.0 Smart Monitoring】 – Real-time tracking via HumsiENK App (iOS/Android) for voltage, current, capacity, and temperature. 15m Bluetooth range for easy remote monitoring.(download via App Store or request QR for Android)HumsiENK provides 5-year coverage and 24-hour customer service for a worry-free experience.
- 【Wide Applications】Perfect for home energy storage, UPS backup, RVs, campers, golf carts, trolling motors, houseboats, solar systems, digital/CCTV cameras, DIY projects, and more. A versatile solution for both recreational and professional use.
- 【Fast Charging】Supports 3 charging methods, including solar, generator and grid, for fast charging. HumsiENK provides five-year solutions for all batteries. 24-hour friendly and professional customer support, if you have any questions, please feel free to contact us for help.
- ⚡ 【Expandable to 64.3kWh (4S4P)】 – Connect up to 4 in series & 4 in parallel for 51.2V/1256Ah (64.3kWh), ideal for large solar systems, home backup, and marine use. supporting devices over 2000W for heavy-duty applications. The robust full-aluminum internal frame ensures zero swelling risk and provides shock resistance. It has passed UL62133 safety tests and comes with a durable ABS case.
$489.99
$729.00 (32% Off)
5
28% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

VATRER POWER
28% Off

12V 300AH Bluetooth LiFePO4 Lithium Battery with Self-Heating, Built-in 200A BMS, Supports Low Temp Charging(-4°F), 5000+ Cycles, Max 2560W Power, Perfect for RV/Camper and Off-Grid Applications, etc.

VATRER POWER

$550.98

$769.99
(28% Off)

More Details
Main highlights
- 【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.
- 【NOTE】The 300Ah heating battery adopts our latest appearance design. All the configurations are the same as the previous version. It can still be connected in series or parallel with the earlier version.
- 【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 300Ah battery model in series or in parallel. The battery will activate the heating function only when the charging current is more than 10A.
- 【Grade-A Cells & Upgraded 200A BMS】VATRER POWER 300Ah self-heating LiFePO4 batteries with Automotive Grade 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.
- 【Exceptional Longevity & Lightweight】 Our LiFePO4 lithium iron batteries provides 5000+ cycles compared to 300~500 cycles in lead acid battery. The service life of LiFePO4 batteries is 8 to 10 times than the standard lead-acid batteries. Helping to minimize replacement cost and reduce total cost of ownership. And the weight of the lithium iron phosphate battery is 30% lighter than the lead-acid battery of the same capacity, so you can carry it more easily.
- 【Automatic Self-Heating】12V 300Ah LiFePO4 battery model is equipped with an automatic self-heating function that will be activated by the BMS when the battery is connected to a charger at -4°F to 41°F. The heating will be stopped when the battery temperature reaches 41°F and then the battery will be formally charged. This feature makes it no problem to charge the battery at low temperatures. The battery's working environment is no longer restricted, but more flexible and convenient to use.
$550.98
$769.99 (28% Off)

Best 300ah lithium batteries - Holiday Sale 2025

2 Pack 12V 300Ah LiFePO4 Battery 200A BMS 3840Wh Up to 6000+ Deep Cycle Lithium Iron Phosphate Battery Perfect for RV Camping Marine Solar Energy Storage Backup Power

12.8V 300Ah Bluetooth Self-Heating LiFePO4 Lithium Battery, Low Temp Cut off, Built-in 200A BMS,Rechargeable 3840Wh Energy Lithium Battery for RV, Marine, Solar Panel, Camping, Backup Power, Off-Grid

12V 330Ah Small-Volume LiFePO4 Lithium Battery,200A BMS,10000+ Deep Cycle Lithium Iron Phosphate Battery Great for Winter Power Shortage, RV, Marine and Off Grid Applications

HumsiENK 12V 300Ah (314Ah) LiFePO4 Lithium Battery Mini Size, Bluetooth 200A BMS, 15000+ Deep Cycles, Low-Temp Protection – for RV, Marine, Solar, Off-Grid, Home Backup (Compact & Lightweight)

12V 300AH Bluetooth LiFePO4 Lithium Battery with Self-Heating, Built-in 200A BMS, Supports Low Temp Charging(-4°F), 5000+ Cycles, Max 2560W Power, Perfect for RV/Camper and Off-Grid Applications, etc.

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ECO-WORTHY 12V 300AH LiFePO4 Lithium Battery Bluetooth with SOC LEDs, Low Temp Protection, 3840WH, 200A BMS Up to 15000 Deep Cycle for Off-Grid, RV, Solar Power System, HomeBackup