Redarc LFP1225 Operation & User’s Manual

The LFP series In-vehicle Battery Chargers feature technology designed to charge your Lithium Iron Phosphate (LiFeP04) batteries to their optimal level, regardless of their size. By providing a unique charging profile, the LFP series In-Vehicle Battery Chargers are able to achieve and maintain an optimal charge in your auxiliary battery, at all times. The LFP series In-vehicle Battery Chargers also feature a Maximum Power Po ...

Page Warnings and Safety Instructions 01 Contents 02 Specifications 02 1 Product Function 03 1. Display Panel 03 2. Charging Algorithm 04 3. Turn On/Off Thresholds 04 4. Error Codes 05 2 Installation 05 1. RED wire - Input Source Positive 05 2. BLUE wire - Source Select 06 3. ORANGE wire - Not Used 07 4. BROWN wire - Auxiliary Battery Positive 07 5. BLACK wire - Common Ground 07 6. GREEN wire - Optional External LED Indication ...

from an alternator input of 12V nominal or a 12V nominal solar panel input. The LFP1225/ LFP1240 will also charge from an alternator input of a 24V nominal vehicle*1. The input voltage of the LFP1225(LV)/LFP1240(LV) can be above, below or equal to the output voltage making it ideal for charging an auxiliary 12V battery where the distance from the main b ...

Current stage. This stage maintains a constant current until the battery voltage reaches its set point. The current may vary during operation in order to maintain safe operating temperature, or to limit the difference between input and output voltage. The charger will then move to Constant Voltage stage. This stage maintains 14.5V on th ...

the External LED and BOTH the LEDs on the unit will flash to indicate the fault type. Flashing sequences are described in the table below. LED State Description 1 flash (1 flash followed by 3.5 second off) Internal Hardware Fault 2 flash (2 flash followed by 3.5 second off) Reserved 3 flash (3 flash followed by 3.5 second off) Unit o ...

2.2 BLUE wire - Source Select The BLUE wire is provided to select whether the unit is charging from a vehicle input or from a solar panel. This wire is monitored at all times. 1.1.1 Alternator Input To charge from an alternator, the BLUE ‘Source Select’ wire must be connected to the vehicle ignition. When connected in this way, the charger will only charge the auxiliary battery when the vehicle ignition is ON, guaranteei ...

The ORANGE wire is not used on the LFP series chargers. It should be left disconnected. 2.4 BROWN wire - Auxiliary Battery Positive The BROWN wire should be connected to the auxiliary battery’s positive terminal. This should be a maximum of 1 metre in cable length from the battery. Appropriate size fuses should be used as per the specifications table on page 2. 2.5 BLACK wire - Common Ground The BLACK wire ...

Always choose a wire diameter equal to or greater than what is specified below. Part Number Cable Install Length (m) Recommended Wire Size (mm²) Closest (BAE, B&S, AWG) LFP1225(LV) 1 - 5 7.71 8 5 - 9 13.56 6 LFP1240(LV) 1 - 5 13.56 6 5 - 9 20.28 4 2.8 Wiring The heavy gauge wires on the LFP1225(LV) and LFP1240(LV) unit carry peak currents ...

be connected to chassis earth. Auxiliary Battery Start Battery Fuse* Note: Power wires must be at least 6mm² and must be crimped using an appropriate crimp tool. INPUT Not Used (Leave Disconnected) *Fuse Ratings as per table on Page 2 LFP1225 & LFP1240 Loads Load Fuse Low Voltage Disconnect Red Blue Orange Black Brown Green 12V Fuse* All ground points must be connected to chassis earth. Auxiliary Battery S ...

be connected to chassis earth. Not Used (Leave Disconnected) SOLAR Loads Fuse* 12V Solar Panel Array Load Fuse Note: Power wires must be at least 6mm² and must be crimped using an appropriate crimp tool. Auxiliary Battery INPUT *Fuse Ratings as per table on Page 2 Low Voltage Disconnect Red Blue Orange Black Brown Green ALL MODELS Figure 2.8c - Standard setup for a 12V Solar array 24V Fuse* All ground points must b ...

The below diagram shows a changeover relay being controlled by vehicle ignitions to automatically swap between alternator and solar panel inputs. A Relay suitable for 12V Vehicle installations is available as part of the REDARC RK1260 Relay Kit. The kit also includes butt-splice connectors, a wiring loom, heat shrink, and instructions. For more information visit www.redarc.com.au . Alternatively, a suitably rated chan ...

solar negative wire and BLACK LFP wire connected to a common ground point? (chassis) Is the input voltage above the required turn ON threshold? (Refer to page 4) Is the auxiliary battery voltage above 4v? Check the connection to the LFP, and the orientation of the LED as per the install diagrams. If the problem is still evident contact a qualified Auto Electrician, or REDARC Electronics. The LFP is ope ...

Q The LFP1225(LV)/LFP1240(LV) turns ON at 13.2V(12V) and OFF at 12.7V(11.9V), but you say it operates down to 9V, explain? A The LFP1225(LV)/LFP1240(LV) will turn OFF for a split second every 100 seconds to measure the unloaded voltage at the battery. When the LFP1225(LV)/LFP1240(LV) turns off it is not drawing any load from the start battery, no load means that there is no voltage drop over the cable run. This allows the LF ...

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please contact REDARC Electronics 23 Brodie Road North, Lonsdale SA (08) 8322 4848 [email protected] www.redarc.com.au Copyright © 2015 REDARC Electronics Pty Ltd. All rights reserved. www.redarc.com.au WARLFP-REV2 ...