Ultramax 12v 50Ah Lithium Iron Phosphate LiFePO4 Battery With Bluetooth Energy Monitor (LI50-12BLU)

Special Price £235.27 Regular Price £541.91
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Ultramax 12v 50Ah Lithium Iron Phosphate (LiFePO4) Battery With Bluetooth Energy Monitor

Battery Product code: SLAUMXLI50-12BLU

Charger Product Code: CHAUMXDC12V5A

A high-end replacement for Sealed lead acid batteries.

Used in: Solar energy storage, golf buggy, mobility scooters, electric wheelchairs, etc. 

Battery Features:

- Rechargeable - Fast charge
- Low self-discharge of just 3% per month - Long battery life
- Suitable for cyclic and standby power applications - Excellent recovery from deep discharge
- Has low-pressure relief valve - Maintenance-free
- Smart BMS (Battery Management System) - Fully Sealed (cannot spill). Can be used in any position
- Long life-cycle - One-year warranty

L: 230mm

W: 138mm
H: 222mm

Weight: 5.7 Kg

Terminal: M6
Terminals are Screw Type - Screws and Nuts included

Ultramax 12v 50Ah Lithium Iron Phosphate (LiFePO4) Battery With Bluetooth Energy Monitor (LI50-12BLU)

This LiFePO4 battery comes with:
✅ Fast-charging lithium battery charger,
✅ 1-Year Warranty
✅ Free Delivery within UK *

Ultramax 12v 50Ah SMART LITHIUM PHOSPHATE LiFePO4 Battery With Bluetooth Communication Function for Leisure, Solar, Wind and Off-grid 24 volt etc. These batteries are also excellent for use in motorcycles, snowmobiles, jet skis, motorhomes, leisure, marine, caravan, mobility scooters, toy cars, electric bikes, etc., because they do not need maintenance during the off season.
Ultra-light, high-performance battery that is 7% lighter and lasts 10X longer than a standard battery.

It comes with a lithium battery charger that fully charges the lithium battery in 10 hours from flat.

Lithium batteries offer:
- High energy density: more energy with less weight;
- High charge currents (shortens the charge period);
- High discharge currents (enabling for example electrical cooking on a small battery bank);
- Long battery life 
- Low self-discharge of just 3% per month
- High efficiency between charging and discharging (very little energy loss due to heat development);
- And higher continuous power available.
It is comparatively more environmentally friendly with no heavy metals or toxic materials used.

Terminals are Internal Threaded connectors - Bolts and Nuts included

These Batteries are the same Dimensions & replace 52Ah, 55Ah, 60Ah.

Please Note: This battery does not come with connecting leads. It is a simple operation to take the leads from your existing battery and fit them to your new battery, although we can supply the leads if required.


Monitor one or more batteries' working status on your smartphone through our Android App (UMXLI BMS) or IOS app (UMXLI Battery).
You can monitor:
- Battery Pack Voltage
- Battery Pack Draw Current
- Battery Charge State
- Battery Discharge State
- Battery Cycles
- Battery Temperature
- Designed Capacity
- Remaining Capacity
- Advanced Cell Voltage Display

Download the app now!


Connecting Bluetooth:
Turn on Bluetooth on your device. Open the app and accept the privacy requests. Each battery has a unique serial number (as labelled on the battery case). Ensure you are within a few meters of proximity to the battery. To connect, touch the top right-hand Bluetooth symbol, select connect and the batteries serial number. Note only a single battery can be connected to a single device at a time. When the Bluetooth signal is unpaired it goes into hibernation (drawing near zero power). Be aware that Bluetooth is a very low power signal and can be highly directional and susceptible to interference, which can lead to data dropout or sporadic data display. Sealed metal areas, metal foils, other devices and electrical interference can impair such signals.


The Ultramax lithium battery is fully protected by a sophisticated and specially designed lithium battery management system (BMS) that constantly monitors every cell to ensure the battery is always optimized for the best performance and life.


The battery can be used in any position as it is non-spillable.
There is no equivalent to sulfation and the batteries can be stored in any state of charge without worry of degradation.
We recommend 50-100% charge before storage. 
Read more about battery maintenance and storage here

Please note: Bluetooth functionality can drain your battery, therefore your battery needs to be charged regularly and the terminal voltage must not drop below 8V. We recommend charging when on standby once every month. Your battery can be damaged irrevocably if not charged.

L: 198mm

W: 166mm
H: 170mm

Weight: 5.7 Kg

Product Code: SLAUMXLI50-12BLU + CHAUMXDC12V5A
Battery Product code: SLAUMXLI50-12BLU
Charger Product Code: CHAUMXDC12V5A

PLEASE NOTE: It is the customer's responsibility to check against the current battery specification before ordering
* - T&C's Apply

More Information
Weight (Grams) 5700
Battery Amperage (Ah) 50
Usage/Application of the battery cyclic
Product Height (mm) 222
Product Length (mm) 230
Product Width (mm) 138
Voltage 12
Product Barcode 5036446819925
Terminal Size M6
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