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Lithium Battery 12V 300Ah LiFePO4 HD Series

£1,595.00 £1,800.00


Lithium Battery 12V 300Ah LiFePO4 HD Series

LiFePO4 Lithium Battery: An Efficient Investment

Would you like a modern battery solution with high performance as an alternative to conventional AGM or lead acid batteries? Our range of lithium iron phosphate batteries, which come in 12v 100ah, 12v 200ah, right up to 12v 300ah output types provide greater value for money for a lower amount of maintenance due to their long-lasting and energy efficient nature.

For heavier duty off grid use, we would recommend this 12v 300ah LiFePO4 version - this particular 12v battery will allow you to go much further for longer, so you can be off grid and explore further than ever before in your camper van, RV or motorhome.

12V 300AH LiFePO4 Lithium Battery (HD) At a Glance

Model HD12300

  • Longer life compare to lead acid battery
  • Up to 60% weight saving
  • 100% usable capacity
  • More energy with 1/3 smaller size
  • Less than 3% self-discharging
  • Built-in safety protection
  • Zero maintenance
  • Easy installation
  • Eco-friendly
  • Quality guaranteed


Polinovel's HD series LiFePO4 lithium batteries are constructed with the best manufacturing techniques. Each LiFePO4 battery has an internal battery management system (BMS) that protects the battery against over charge, over discharge, short circuit, and high temperature. HD series LiFePO4 battery is truly maintenance free and will last several years. 

You therefore won't have to constantly use your battery chargers, as it often the case with lead acid varieties.

These high capacity batteries are best used in environments that require high power and tougher operation, such as deep cycle battery applications, boats, RVs, vans, motorhomes, off-grid appliances and much more.

Li-on battery (lithium ion battery packs), specifically the LiFePO4 variety, are also known for being better for the environment, compared to their lead acid battery counterparts. Due to there incredible charge efficiency  and ultra long life.  The extremely low level of self discharge and not needing to be stored fully charged, means that wasteful 'float' charging is no longer required during periods of low usage. Finished for the season, just turn the loads off and forget about charging in 6 months less than 15% charge degredation.

Internal Structure

Every detail of the design and construction of our lithium battery packs is carefully planned and tested to ensure that you get the safest and most durable battery possible.

Well-organized Structure (Cells, BMS, Cables) Dual Safe BMS, Steel Plate on Top & Screw Supported Overhead

Patented 32650 Cells with Steel Positive and Negative Columns Design Whole Battery Pack Adopts Screw Fastening Connection

Tailored & Qualified Cable for Fast Charging and Discharging Pure Copper Terminals for High Current, Insulator Cap Protection


Items Parameter
Battery Type LiFePO4
Nominal Voltage 12.8V
Nominal Capacity 300Ah
Energy 3.84KWh
Internal Resistance ≤20mΩ
Series & Parallel Application up to 4 series 4 parallel connected application
Limited Charge Voltage 14.6±0.2V
Floating Charge Voltage 13.8±0.2V
Charge Method CC/CV
Discharge Cut-off Voltage 10.0V
Standard Charge Current 100A
Max. Continuous Discharge Current 100A (160A optional)
Pulse Discharge Current (<5s) 200A~400A
Cycle Life > 2000 cycles
Dimension Length: 525±2mm
Width: 270±2mm
Height: 220±2mm
Weight 35±0.2Kg
Operation Temperature Range Charge: 0~45℃;
Discharge: -20~60℃
Recommended operating temperature: 15℃~35℃
Self-Discharge Rate Residual capacity: ≤3%/month; ≤15%/years
Reversible capacity: ≤1.5%/month; ≤8%/years
Storage Temperature & Humidity Range Less than 1 month: -20℃~35℃, 45%RH~75%RH
Less than 3 months: -10℃~35℃, 45%RH~75%RH
Recommended storage environment: 15℃~35℃,45%RH~75%RH


Quality standards:

CE marked tested to EU Council Directive 2014/30/EU Electromagnetic Compatibility

Test std.  EN 61000-6-3: 2007+A1: 2011 EN 61000-6-1: 2007. 


Battery Management System

The BMS helps to ensure safe and accurate running. It also provides monitoring to prevent:

◆ Over-Charging

◆ Over-Discharging

◆ Over-Current

◆ High Temperature

◆ Short Circuit

◆ Thermal Shock

◆ No Fires

◆ No Explosions

Dimension Drawing

Polinovel HD Series lithium batteries are developed based on same battery case size that are perfect to replace conventional lead acid batteries.

Why Choose Quality Source?

  • Efficient products – Our Lithium Batteries can last up to 6000 cycles if properly drained and looked after.
  • Expertise you can trust - We've been servicing clients across the UK and internationally for over 20 years, so we have experience of delivering for a variety of clients, including boat and motorhome hire companies to name just a few. We are lithium iron specialists, we don’t sell  lead acid or AGM batteries. 
  • Quality – We don’t sell ‘cheap’ batteries – we sell long-lasting and efficient products that allow you to make savings in the long term. You will be spending less on replacing them as often as other battery types, like lead acid batteries.

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