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Model:

REC25HV

Unit 2, 110 Station Road, Seven Hills ,NSW,  2147, Australia

25A High Voltage Reducer / Charger

Operating Instructions

Please read these instructions before use

Congratulations on purchasing your new GSL Electronics High Voltage Reducer/Charger. This product utilises 
Switchmode and Microprocessor technology for the charging of 12V and 24V Batteries(Lithium,AGM,GEL and 
Flooded Cell). As well as charging functionality it is also able to act as a standard 

Reducer

 from inputs as high 

as 80V to either 12V or 24V.  The charger provides a safe and fast method of restoring discharged batteries 
and maintaining them. This is achieved via precisely controlled Bulk, Absorption and Float charging states. It is 
fully protected against overload, short circuit, over temperature, over voltage and with a bulk charge timeout for 
additional safety. The models are built in a compact and strong aluminium extrusion which can be easily secured 
to both vertical and horizontal surfaces. Before starting the charge cycle the battery voltages are evaluated to 
detect faulty batteries. 

Bulk Mode

 – This mode of the battery charger delivers bulk charging current regulated to 25 Amps into the 

battery being charged. After the battery voltage rises to approximately 70% charge. The charger will switch 
automatically into Absorption Mode.

Absorption Mode

 – In this mode the battery charger output voltage is maintained at 14.5V / 29V until the current 

drops below a controlled threshold. The battery is brought up to a 90% charge then enters float mode.

Float Mode

 - The voltage is reduced to 13.5V / 27V and maintained at that level with the charger supplying just 

enough current to maintain the battery at full capacity.  

Fixed Mode(Reducer Mode Only) : 

When the unit is set to REDUCER mode the unit will output a fixed voltage 

of either 13.5V or 27V. 

REC-HV-R2

Installation & Safety Precautions:

 

1. 

Before mounting ensure that you have set the internal jumpers to suit your batteries and your system. Refer to

    Page 3 for how to access and set the jumpers. 

2.

 The following connection sequence is to be followed after the Batteries have been disconncted and isolated 

     from the installation: 
    Ground (BLACK), Input (WHITE), Output (RED) and Control (BLUE).

3.

 Preferably mount the unit inside the vehicle. Avoid locations where external heat is produced e.g. exhaust 

    system or where the batteries are located.

4.

 Choose a position with good ventilation where air can pass freely around the unit.  

 

5.

 Ensure the unit is protected from water spray and other sources of contamination e.g. oil, grease and dust. 

6.

 Ensure that unit is installed away from any flammable fumes, liquids or materials.

7.

 During charging process, do not use a naked flame near a battery, due to gases emitted from the battery, 

     which may ignite and explode.

More information https://www.caravansplus.com.au

Summary of Contents for REC25HV

Page 1: ...to Absorption Mode Absorption Mode In this mode the battery charger output voltage is maintained at 14 5V 29V until the current drops below a controlled threshold The battery is brought up to a 90 charge then enters float mode Float Mode The voltage is reduced to 13 5V 27V and maintained at that level with the charger supplying just enough current to maintain the battery at full capacity Fixed Mod...

Page 2: ...e use 7 Never smoke or light cigarettes near a battery 8 Do not place tools on top of battery or allow tools to fall on battery 9 Always wear eye protection near a charging battery 10 Ensure a well ventilated area is used when testing or re charging batteries 11 Ensure ventilation is adequate and venting holes are not obstructed Inadequate ventilation may over heat the unit and cause inefficient o...

Page 3: ...1 2 Lithium Absorption 14 6V 29 2V Float 12 6V 25 2V Link 2 3 Vented Lead Acid Absorption 14 5V 29V Float 13 5V 27V B6 Linked 12V Mode Factory Default No Link 24V Mode A2 Linked Charger mode Chemistry set by J10 No Link Reducer Mode Fixed output 13 5V 27V Voltage set by B6 IGN Link 1 2 Constant ON Where the igition wire is not used and alternative arangments are made to turn the unit on and off vi...

Page 4: ...repaid to the original despatch destination We regret that no liability can be accepted for consequential or special damages of any kind howsoever arising in connection with products supplied by the seller This warranty is in lieu of all other warranties expressed or implied No representative is authorised to assume for the seller any other liability in connection with the seller s products REC HV...

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