EV Power Australia for Lithium Batteries and Chargers

BMS Headboard with Latching Relay

Availability: In stock

Excl. Tax(GST): $76.00 Incl. Tax(GST): $83.60

Quick Overview


A simple microprocessor based master unit for controlling LFP batteries.
Price includes 3 pole 80A latching relay.


- Simple to install and use, microprocessor control.
- 12V power input
- 68 x 35 x 10mm PCB,    92 x 40 x 30mm relay
- Prevents overcharge and over-discharge of LFP batteries.
- Version A for three wire latching relays.
- Uses the unique EV Power developed one-wire NC current loop interface.
- User programmable using a standard three wire interface and PICAXE BASIC
- Designed and manufactured in Australia

The MICRO08 does not monitor the battery voltage. It just works off feedback from the cell modules.

If any cell goes out of range it will cause the MICRO08 to fault the system after a short delay.

micro08 with latch relay

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  • micro08 with latch relay


A simple microprocessor based master unit for controlling LFP batteries.

The EV Power Battery Management System (BMS) is designed for Lithium Iron Phosphate (LiFePO4, LFP) batteries of capacity 40-400Ah.  These cells are generally used in applications  where light weight and high power are required.

The mcu-micro-08 is a simple bare PCB microprocessor based battery management master control unit. It is designed to operate in unison with EV Power cell modules using the EV Power one-wire NC interface. The system is designed to prevent over-discharge and overcharge of LFP batteries. It can directly control a charger and/or load via connected relays.

The mcu-micro-08 comes in two versions each with different programming. Version A is for use with a three wire “latching” charge/discharge relay. Version B is for use with normal relays/contactors and solid state relays for separately controlling charge and discharge sources.

Unlike regular relays, three wire latching relays offer the advantage of drawing no power when active. Large charge/discharge currents can be directly controlled in this way without significant parasitic power being drained by the BMS itself. This is an EV Power industry first for managing LFP batteries.

Additional Information

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Download Attachment
pdfmicro08 manual(537.49 KB )Download