$713.99 USD

The Aegis 36V 40Ah Lithium Iron Phosphate - LiFePo4 Battery is a state of the art rechargeable battery pack made with Lithium Iron Phosphate cells designed for 36V devices. It is perfect for energy storage, solar applications, robots, backup power, and other applications that require a higher-energy density battery.

The battery comes with integrated M10 Copper Screw Terminal connectors making it a perfect drop in solution for your applications. The Aegis battery has a built in battery management system (BMS) that keeps the battery running at peak performance and protects the cells for thousands of cycles, including over-charge, over-discharge, over-current, and short-circuit protection.

If this connection does not meet your needs, you may also view alternative adapters here. 

For out of stock kits, we may be able to provide another compatible charger. Please contact us and we can check for you.

ALFA-036040A Product Manual

For more info & usage notes for our lithium batteries, please click here.


    Battery Type LFP (LiFePO4) - ABS Case
    Cell Type/Assembly Method Cylindrical cells/welded
    Voltage (V) 36V
    Capacity (Ah) 40Ah
    Energy Stored (Wh) 1440 Watt-Hours
    Weight 32.6 lbs. (14.8 kg)
    Dimension Metric (L x W x H) 400 mm x 170 mm x 230 mm (+/-2mm) 
    Dimension Imperial (L x W x H) 15.7in x 6.7in x 9.1in (+/-0.1in)
    Cycle Life 3000+ cycles
    Discharge / Charge Connector M10 Terminal
    Normal Charged Voltage 43.8V
    Normal Charge Current 10.0 Amps
    Normal Battery Cutoff Voltage
    Nominal Continuous Discharge Current 20.0 Amps
    Maximum Continuous Discharge Current 40.0 Amps
    Maximum Pulse (Peak) Discharge Current 80.0 Amps (2 Seconds)
    Charge Temperature 0°C to 45°C
    Discharge Temperature -20°C to 60°C
    Operating Humidity 60±25%R.H
    Storage Humidity 60±25%R.H
    Automatic Battery Protection Module/System Low Voltage Disconnect,
    Over Voltage Disconnect,
    Short Circuit Protection,
    Reverse Polarity Protection,
    Cell Balancing

    Compatible AC-to-DC Charger Specifications:

    Input Voltage: AC110V-240V, 50/60HZ
    Output Voltage: 43.8VDC 
    Current: 10A 
    Connector: Alligator Clip
    Model Number: CRF-3610A

    LFP Advantage
    - Advanced LFP (Lithium Iron Phosphate) Chemistry
    - Optimized Deep Cycle Performance
    - Double the density versus traditional SLA/AGM/GEL
    - 60-70% weight reduction versus traditional SLA/AGM/GEM
    - High thermal tolerance
    - Ideal for Electronics
    - 10+ Years Lifespan

    Intelligent Technology
    - Battery Management System (BMS) Board as Standard
    - Every Battery has bespoke board matching its performance parameters
    - Comprehensively balances charging and discharging
    - Internal balancing circuitry and charger circuitry inside BMS
    - Comprehensive protections against over-charge, over-discharge, over-voltage, over-current, short circuits, reverse polarity, thermal protection
    - Dramatically extends service life

    Comprehensive Improvements
    - Achieve full depth discharge of 100% Label Capacity
    - “True Lithium Capacity” guarantees capacity of purchase is capacity delivered
    - Reliable, repeatable full depth cycling without system life cycle degradation
    - LFP Systems can be fully discharged safely without impact on system performance 
    - Multiple times usable capacity of Lead Acid

    Warranty: 3 years LFP Battery Warranty 
    30 Day Money Back Return | 3 Year Repair/Replace 
    Cancellation: Within 24 Hours ⟶ No charge 
    Shipping: Standard within 2-3 business days