Sherlotronics 3A LITHIUM User manual

Installation Instructions -
For Service Persons Only
Model No: 3A_LITHIUM
• Digitally controlled current limited 2.4A / 1.8A output setable
• Jumper selectable Isolated output or Constant output
• Low voltage battery cut off below 10VDC
• AC Fail trigger output switches with a + Positive output
• Low battery trigger output below 11.6VDC
• Over Voltage cutoff protection above 15VDC
• 3A Resettable Fuse protection on DC output.
• Safety Fuse protection on AC input.
• 50mA Quiescent current on power failure.
• ABS UL94 HB flame resistant plastic enclosure.
English
Model: 3A_LITHIUM
Housing colour and material: White ABS
Input Voltage range: 110V - 240VAC 50Hz 0.5A
Output Voltage range setable: 12VDC - 15VDC
Charge Current: 1.8A / 2.4A @ 14.4VDC
Operating outside Temperature: -3°C to 49°C
Dimension (lxbxh) 200 x 180 x 80mm
Gross weight: 0.805Kg
Technical Specifications:
Features
Product Description
This product is sold subject to our standard warranty conditions and is warrantied against defects in
workmanship for a period of 2 years.
Warranty
Customer Support line: [phone] | E-mail: [email protected]
The device is a 12VDC-14VDC Power-supply charger
unit designed to charge 12.8VDC 6AH & 8AH
LITHIUM LIFE-PO4 batteries.
This unit can also be used in Emergency lighting
applications or isolated battery back-up installations.

Locate the Voltage adjustment trimmer on the
bottom switch mode PCB next to the green
LED. Turning clockwise will increase the
voltage. Set the voltage to 14.4VDC Measure
the voltage output on the DC Output terminal
connectors using a multi-meter.
Top Controller Board
NOTE:
Before connecting the Lithium battery, plug
the unit into mains. Using a voltage meter
measure volts across the Red (+) and Black (-)
battery wires to check that the charge voltage
is between 14.3VDC - 14.5VD.C.
The recommended battery charge voltage for
LIFE-PO4 is 14.4VDC.
Disconnect Mains power before wiring up the
equipment to the unit.
The unit will create slight internal heat on all
components including its battery. Ensure
that the unit has adequate ventilation when
selecting the installation location.

The unit is supplied with a packet of screws.
The “Plastic plate” is not screwed down so that it is
easy to open up the unit to run cables out of the box
or to access the mains leads or the DC input wires.
Please use the Qty 4:- Self tapper screws that are
provided to screw the plastic plate securely to the
“Plastic base” Only do this once you have run the
cables out of the bottom of the plastic base and
mounted the unit onto a secure wall using three
(3) x M6 x 42 Nail in anchor or similar.
Securing the plastic plate
RED Power failure condition.
OFF Power failure condition. The battery
Voltage reached under 10V & so the
unit switched off.
LED1 Indication
GREEN Power is on & the unit is charging the
battery
ORANGE Power failure condition. The battery
Voltage is above 12V
RED Power failure condition. The battery
Voltage is below 11.6V and is almost
depleted
RED
FLASHING
Over Voltage protection. Input is
above 15VDC. The Charger is turned
off to protect the battery.
OFF Power failure condition. The battery
Voltage reached under 10V & so the
unit switched off.
LED2 Indication

You can easily unplug the red/black battery leads
if you wish to install or remove a battery from the
unit. The Plug can only fit in one direction. Negative
(Black wire) is the first wire from the left side.
Battery Lead Plug
With the AC power off, plug the Negative (Black) &
Positive (red) wires to the battery and then insert the
battery into the battery compartment. If you test the
current been drawn on an ammeter, please note that
the charger output has a soft start program so it will
slowly increase the current to the battery stepping
up over a 30 second period. We call this our soft
start which protects the charger from a sudden
surge to the appliance that is wired up to this battery
charger.
Installing the Battery
This product is approved for use in residential,
commercial and light Industrial environment and
complies with the essential protection requirements
of the R&TTE Directive 1999/EC on the approximation
of the laws of the member states.
Approvals
EN 55022:2010
EN 55024:2010
EN 6100-3-2:2006+A1:2009 + A2:2009
EN 6100-3-3:2008
EN 62368-1: 2014+A11:2017
IEC 623681-1:2014 (second edition)
Pending Certifications
THE SOCKET OUTLET SHOULD BE INSTALLED NEAR THE EQUIPMENT AND
SHALL BE EASILY ACCESSIBLE
The device is intended to ONLY Charge 12VDC Lithium LIFE-PO4 batteries with a max capacity
ampere hour rating of 10A/H. A bigger battery may result in the battery taking too long to charge.

You can set the unit up for a emergency lighting
installation. Set the jumper to Isolated output. This
will set the unit to only output DC voltage to the
emergency lights when the 220VAC power fails.
When 220VAC power is restored the emergency
lights will automatically turn off. This function also
sets the battery charger to current limit to 2.4A. So
the battery should charge within 5 hours.
Its recommended to set the unit as an Isolated output
when connecting to Alarm system that already has
got a battery installed. By doing this you will protect
both batteries from external charge voltages. When
220VAC power fails then both batteries will discharge
together uniformly. When power is restored the
LIFE-P04 battery will disconnect itself from the Alarm
system and charge back up.
Emergency Lighting Applications
Multiple Battery Backup Applications
Its recommended to set to Constant Output when the
unit is the primary power source and battery back-
up such as connecting to a Wi-fi Router or a CCTV
Camera system. This function sets the unit to current
limit the battery charger to 1.8A, so the battery will
charge a bit slower than the Isolated setting around 6
hours
Constant Power Output Application