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Welcome to the EShop of Unimed Ltd (UK) ( - Cell and Battery MODULAR Solutions
Welcome to the EShop of Unimed Ltd (UK) (

12v 300ah LiFePO4 Battery (Underseat) - ULM-12-300 | MOQ - 1

Original price £2,025.70 - Original price £2,025.70
Original price
£2,025.70 - £2,025.70
Current price £2,025.70

LiFePO4 Smart BMS (Underseat Battery) 


MOQ - 1     Price quoted is for 1 x Battery


Vat included and FREE Shipping to Mainland UK and Ireland only  -

All other Countries - Please contact us for product prices and shipping costs

 CLASS A - Off Grid usage,with lights,TV and motor mover  

Boats / Campervans / Caravans / Cars / Solar

Integrated Battery Management System (BMS)

To allow the control and charging of the different elements of a storage battery and to protect it against overcharging, overvoltage and overheating.

 Integrated Bluetooth 4.0 monitoring

You have all important battery data always on your smartphone or tablet. The application displays the following data in real time.


App name    UltimatronFrance

Lithium-iron-phosphate (LiFePO4) has been widely adopted by industry. It is very stable, without risk of fire or explosion, even with an elementary BMS.

This battery is also characterized by the large number of allowable charge-discharge cycles, around 3,000 discharges against a few hundred for most batteries sold (lithium or lead). It also has a particular characteristic, a sort of reverse memory effect: the less the discharge, the greater the number of cycles, which makes it particularly insensitive to microcycling.

Finally, it tolerates extreme ambient temperatures quite well, from 0 ° to 60 ° C. With a quality BMS, it is a very reliable battery capable of providing service for many years.

Our lithium iron phosphate (LiFePO4) batteries offer many advantages over traditional batteries:


Brand Ultimatron France

Battery Type


Battery by Application

Leisure, Marine, Off-Grid

Battery Voltage (V)




  • 5 year manufacturer’s warranty,
  • The safest technology, without the risk of fire or explosion,
  • Long service life,
  • Steadily improving storage capacity,
  • High stability even under extreme loads,
  • No memory effect, no need for full charge and discharge cycles,      
  • High performance even under extreme conditions,
  • Deep and steady discharge and charging efficiency,
  • Small size and light weight.
  • 5 year warranty
    – PrIsmatic class A battery cell
    – Application available on Apple Store and Google Play 
    – Dimensions (L x W x H) mm: 390*360*160 mm

Note: Parallel connection and series connection with Max. 4 batteries for 12V, 24V, 48V applications.


App MANUAL - English version - PDF
(also available within the app  French / German / Italian / Spanish / Swedish languages - app must be dowloaded for these)