12 volt Lithium Battery 300ah
12V 300Ah Lithium iron phosphate batteries are substitutes for lead-acid batteries, offering higher energy density. For batteries of the same capacity, lithium batteries have only one-third the volume of lead-acid batteries.
Even at an 80% discharge depth, lithium iron phosphate batteries can still stably output high-power electricity, far surpassing lead-acid batteries.
The built-in battery management system of lithium iron phosphate batteries can prevent overcharging, over-discharging, and high temperatures, ensuring safer operation and more balanced energy management. This contributes to a lifespan of over 5 years.
With a maintenance-free design, lithium batteries offer simpler usage and management.
Built-in BMS (Battery Management System) in 12V 300Ah battery
12V 300Ah battery Advantages
LiFePO4 battery cell
12V 300Ah lithium battery adopts EVE Lithium Iron Phosphate (LiFePO4) cell, which has the features of high capacity, high output current, stable output, stable electrochemical properties, and wide working temperature range. And the battery does not contain cobalt, lead, nickel, sulfuric acid, and other environmentally harmful substances or liquids. Comply with EU Rosh regulations.
More than 6000 deep cycles
The cycle times of this battery is 3000~1000 times, which depends on how much the discharge depth is. If it is tested at 80% of the maximum discharge depth, then it can be discharged at least 6000 times. This is a significant advantage over lithium lead-acid batteries that only have less than 500 cycles.
Expandable battery pack capacity
The battery can be up to 4 in series to 48V and 4 in parallel to 1200Ah. If you need a larger capacity battery pack, you can mix and match according to your own voltage and capacity requirements for the battery pack.
Higher Energy Density
The energy density of 12V 300Ah lithium iron phosphate battery is 150Wh/g, while the energy density of lead-acid battery is only 60Wh/g. Moreover, the maximum discharge depth of lithium battery is twice as much as that of lead-acid battery. Therefore, the weight of lithium iron phosphate battery is only about 1/4 of that of lead-acid battery for the same battery that can be utilized for electricity.
Bluetooth monitoring of battery status
The optional Bluetooth module can be placed inside the battery, which is convenient for you to monitor the battery through the cell phone APP connection.
Compatibility
The 300Ah Li-Iron Phosphate battery is compatible with most brands of chargers on the market, such as Power Pole, Stealth, etc. It can also replace almost all lead-acid batteries. It can also replace almost all devices and places where lead-acid batteries can work.
M8 Bolt
Universal M8 bolts and more conductive copper terminals make the battery terminals more adaptable and make closer contact. Reduces the possibility of the terminals being corroded.
99.5% conversion efficiency
The energy utilization efficiency of 12V 300Ah lithium battery can be almost close to 100%, because of its low internal resistance, the energy consumption mainly comes from the trace heat generated during charging and discharging. Therefore it is also a very popular and widely used energy storage battery.
8 Years Warranty, Lifetime Warranty
Our lithium batteries come with an 8-year warranty and offer a quick response within 24 hours. If your battery is out of warranty, we still provide free consultation and diagnosis service.
12v 300ah Battery Specification
| Battery Model | JMH 12100 | JMH 12150 | JMH 12200 | JMH 12240 | JMH12300 |
| Nominal Voltage/V | 12.8V | ||||
| Nominal Capacity/Ah | 100Ah | 150Ah | 200Ah | 240Ah | 300Ah |
| Rated Energy/Wh | 1280Wh | 1920Wh | 2560Wh | 3072Wh | 3840Wh |
| battery size | 330*172*215mm | 520*238*230mm | |||
| BMS Function | Overcharge, over-discharge, over current and temperature protection | ||||
| Charge Cut-off Voltage/V | 14.6V | ||||
| Discharge Cut-off Voltage/V | 10V | ||||
| Cycle Life | ≥4000 @ 25℃ | ||||
| Max. Charge Current/A | 50A(0.5C) | 100A(0.5C) | |||
| Continuous Discharge Current/A | 120A | 250A | |||
| Maximum Discharge Current/A@5S | 240A | 500A | |||
12V 300Ah battery price
12V 300Ah lithium battery price is $450
12V 300Ah Gel battery price is $300
The price of 12V 300Ah Lead acid battery is $250
Although lithium batteries are more expensive, they are much more cost-effective in terms of longevity, maximum discharge depth, and safety.
12V 300Ah Battery Appliances
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Lithium Ion Battery Production Process
Why Choose US?
- JMHPOWER is a professional factory that designs and produces lithium batteries, with over 29 years of industry experience.
- ODM & OEM Service.
- We have 20 Engineers and Designers, along with 50 Quality Inspectors.
- Certifications: UL / IEC / CE / ROHS / MSDS /UN38.3 / FCC, etc. For the vast majority of countries and regions around the world, we have comprehensive product certificates.
- We have 300 distributors worldwide, many of whom have been cooperating with us for over 20 years.
About Shipping & Delivery Time
We offer home delivery services in regions and countries. Such as Southeast Asian countries, European countries, North American countries, Middle Eastern countries, and Oceanian countries.
- Delivery time for sample order: within 7 days after payment.
- Delivery time for bulk orders: within 30 days after deposit payment.
Shipping methods: Express(UPS, Fedex, DHL), Air freight, Sea freight, Railway transportation, etc.
After-sale Service
When the product is not working or encounters issues, we will provide assistance immediately.
- Within 12 hours. We aim to fully understand the issues with the customer’s product. Customers are required to provide photos or videos illustrating the situation.
- Within 24 hours. We provide customers with a solution. Our quality inspector and engineers analysis the root cause of the problem and make initial judgments to offer solutions.
- Within one week. The product issues must be resolved already, and we aim to receive satisfactory feedback from the customer.
- At first month and third months. We will contact customers to inquire about the performance of their product and ensure it is working well.
- Lifelong after-sales consultation services: If the product encounters quality issues within the warranty period, we will provide free repair parts or a new product for the customer. If the warranty period has expired, we will still offer solutions or repair parts, customer will be responsible for the shipping and repair parts costs.
Additionally, we hold a weekly product quality meeting every Monday. During these meetings, we discuss product improvements and optimizations based on the issues or suggestions raised by customers while using our products, in collaboration with engineers.
