DEFA MultiCharger 1205R Flex Compact 12V-5A Maintenance Charger User Guide
- June 10, 2024
- DEFA
Table of Contents
- MultiCharger 1205R Flex Compact 12V-5A Maintenance Charger
- Product Information
- Important Safety Instructions:
- Installation
- Usage
- MultiCharger 1204R Flex Li
- IMPORTANT SAFETY INSTRUCTIONS
- PRODUCT INSTALLATION
- USE
- TECHNICAL INFORMATION
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
MultiCharger 1205R Flex Compact 12V-5A Maintenance Charger
Product Information
The MultiCharger 1204R Flex is a battery charger designed for permanent
installation in vehicles. It comes in two variants – MultiCharger 1204R Flex
and MultiCharger 1204R Flex Li. The former is suitable for charging lead-acid
batteries while the latter is designed to charge only lithium batteries with
an integrated
Battery Management System (BMS). The charger has a maximum output of 4A and
can provide different charging voltages depending on the battery type.
Important Safety Instructions:
- Read all instructions and cautionary markings on the charger, battery, and product using battery before use.
- Install the charger according to the installation instructions applicable to your vehicle model.
- Only charge lithium batteries with an integrated Battery Management System (BMS) using MultiCharger 1204R Flex Li.
- Use attachments recommended or sold by the charger manufacturer.
- Do not expose the charger to rain or snow.
- Disconnect the charger from the outlet before attempting any maintenance.
- Working in the vicinity of a lead-acid battery is dangerous. Follow all instructions each time you use the charger.
- Locate the charger away from the battery as DC wires permit.
- Connect and disconnect DC output terminals only after removing ac cord from electric outlet.
Installation
To install MultiCharger 1204R Flex, follow the installation instructions applicable to your vehicle model. For MultiCharger 1204R Flex Li, ensure that you only charge lithium batteries with an integrated Battery Management System (BMS). Locate the charger away from the battery as DC wires permit. Connect and disconnect DC output terminals only after removing ac cord from electric outlet.
Usage
To use MultiCharger 1204R Flex, connect the charger to the battery and the electrical outlet. Determine the voltage of the battery by referring to the car owner’s manual and make sure that the charger is appropriate. For MultiCharger 1204R Flex Li, only charge lithium batteries with an integrated Battery Management System (BMS). To achieve voltage on both engine- and interior heater output, supply a +12V signal to the control inlet signal (marked with a clock) on the charger. This signal is normally supplied via the DEFA control unit’s yellow cable. If a control unit is not mounted, use the red cap that comes with the charger to achieve this signal. The relay will only be activated and load voltage when both +12V control signal and 120V are connected to the charger. Note: Always follow the safety instructions mentioned in the user manual while using MultiCharger 1204R Flex. In case of any doubts or issues, contact an authorized DEFA product dealer.
MultiCharger 1204R Flex Li
MultiCharger 1204R Flex 
MultiCharger 1204R Flex Li 
Connection diagram 
IMPORTANT SAFETY INSTRUCTIONS
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SAVE THESE INSTRUCTIONS – This manual contains important safety and operating instructions for the MultiCharger 1204R Flex and the MulitCharger 1204R Flex Li
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Before using battery charger, read all instructions and cautionary markings on the battery charger, battery, and product using battery. This battery charger is designed for permanent installation in the vehicle and must be installed in accordance to the installation instructions applicable to your vehicle model.
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For MultiCharger 1204R Flex Li: only charge lithium batteries with an integrated Battery Management System (BMS)
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Use of an attachment not recommended or sold by the battery charger manufacturer may result in a risk of fire, electric shock or injury to persons.
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To reduce risk of damage to electric plug and cord, pull by plug rather than cord when disconnecting charger.
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Do not use an extension cord between the DEFA power cord and the 120V AC power outlet.
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Do not operate the charger with damaged cord or plug – replace the cord or plug immediately.
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Do not operate the charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; return it to an authorized DEFA product dealer.
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Do not disassemble the charger; return it to an authorized DEFA product dealer when service or repair is required. Incorrect reassembly may result in a risk of electric shock or fire.
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To reduce risk the of electric shock, unplug the charger from the outlet before attempting any maintenance or cleaning.
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WARNING – RISK OF EXPLOSIVE GASES.
- WORKING IN VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS REASON, IT IS OF UTMOST IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS EACH TIME YOU USE THE CHARGER.
- To reduce the risk of battery explosion, follow these instructions and those published by the battery manufacturer and manufacturer of any equipment you intend to use in vicinity of battery. Review cautionary marking on these products and on engine.
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PERSONAL PRECAUTIONS
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Consider having someone close by to come to your aid when you work near a lead-acid battery.
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Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing, or eyes.
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Wear complete eye protection and clothing protection. Avoid touching eyes while working near the battery.
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If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters eye, immediately flood eye with running cold water for at least 10 minutes and get medical attention immediately.
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NEVER smoke or allow a spark or flame in the vicinity of the battery or engine.
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Be extra cautious to reduce risk of dropping a metal tool onto battery. It might spark or short-circuit the battery or other electrical part that may cause explosion.
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Remove personal metal items such as rings, bracelets, necklaces, and watches when working
with a lead-acid battery. A lead-acid battery can produce a short-circuit current high enough to weld
a ring or the like to metal, causing a severe burn. -
ONLY CHARGE LEAD/ACID, AGM, EFB, GEL and LITHIUM TYPE BATTERIES. OTHER TYPES OF BATTERIES MAY BURST CAUSING PERSONAL INJURY AND DAMAGE. It is not intended to supply power to a low voltage electrical system other than in a starter-motor application. Do not use battery charger for charging dry-cell batteries that are commonly used with home appliances.
These batteries may burst and cause injury to persons and damage to property. -
NEVER charge a frozen battery.
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PREPARING TO CHARGE
- Make sure all accessories in the vehicle are off, so as not to cause an arc.
- Be sure the area around the battery is well ventilated while the battery is being charged.
- Clean the battery terminals. Be careful to keep corrosion from coming in contact with your eyes.
- Add distilled water in each cell until battery acid reaches the level specified by the battery manufacturer. Do not overfill. For a battery without removable cell caps, such as valve regulated lead acid batteries, carefully follow the manufacturer’s recharging instructions.
- Study all battery manufacturer’s specific precautions while charging and recommended rates of charge.
- Determine the voltage of the battery by referring to the car owner’s manual and make sure that the charger is appropriate
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CHARGER LOCATION
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Locate the charger as far away from the battery as DC wires permit.
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Never place the charger directly above the battery being charged; gases from the battery will corrode and damage the charger.
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Never allow battery acid to drip on the charger when reading electrolyte specific gravity or when filling the battery.
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Do not operate the charger in a enclosed area or restrict ventilation in any way.
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Do not place a battery on top of the charger.
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DC CONNECTION PRECAUTIONS
- Connect and disconnect DC output terminals only after removing ac cord from electric outlet. Never allow the terminals to touch each other.
- Attach terminals to the battery and chassis as indicated in 16(e) and (f).
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FOLLOW THESE STEPS WHEN THE BATTERY IS INSTALLED IN THE VEHICLE. A SPARK NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION. TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY:
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Position AC and DC cords to reduce any risk of damage by the hood, door, or moving engine parts.
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Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
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Check polarity of battery posts. The POSITIVE (RED, +) battery post usually has larger diameter than the NEGATIVE (BACK,–) post.
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Determine which post of battery is grounded (connected) to the chassis. If negative post is grounded to chassis (as in most vehicles), see (e). If positive post is grounded to the chassis, see (f).
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For negative-grounded vehicle, connect the POSITIVE (RED) terminal from battery charger to the POSITIVE ungrounded post of the battery. Connect the NEGATIVE (BLACK) terminal to the vehicle chassis or engine block, away from battery. Do not connect terminal to carburetor, fuel lines, or sheet-metal body parts.
Connect to a heavy gage metal part of the frame or engine block. -
For positive-grounded vehicle, connect the NEGATIVE (BLACK) terminal from battery charger to the NEGATIVE ungrounded post of the battery. Connect the POSITIVE (RED) terminal to the vehicle chassis or engine block, away from the battery. Do not connect terminal to carburetor, fuel lines, or sheet-metal body parts. Connect to a heavy gage metal part of the frame or engine block.
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When disconnecting the charger, turn switches to off, disconnect AC cord, remove the terminal from the vehicle chassis, and then remove the terminal from the battery.
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GROUNDING AND AC POWER CORD CONNECTION INSTRUCTIONS
The charger must be grounded to reduce risk of electric shock. The charger is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an outlet that is properly installed and grounded in accordance with all local codes and ordinances.
DANGER – Never alter AC cord or plug provided – if it will not fit the power outlet, have proper outlet installed by a qualified electrician. Improper connection can result in a risk of an electric shock. -
This battery charger is intended for use with a nominal 120-volt circuit, which has a grounding plug that looks like the plug illustrated in Figure A. Do not attempt to use an adapter or extension cord.
PRODUCT INSTALLATION
Connect the battery charger in accordance with the wiring diagram. Find a suitable place to install the charger in a distance from the battery that does not exceed the length of the enclosed 12V charging cable. If the cable is extended or cut, the charger will charge with the wrong voltage. If the 12V cable is extended, a cable with a larger cross-section must be used. Connection to the battery must always be made with the enclosed fuse. Use at least two or more holes on the fastening bracket to install the charger or use the supplied cable ties. Make sure the battery charger is not placed too close to hot parts such as an exhaust manifold, turbo and so on. It must also be positioned well clear of moving parts such as pulleys, cooling fans and steering rods.
To achieve voltage on both engine- and interior heater output the control inlet signal (marked with a clock) on the charger must be supplied with a +12V signal. This is normally supplied via the DEFA control units yellow cable. If a control unit is not mounted, this signal can be achieved using the red cap that comes with the charger. The relay will only be activated and load voltage when both +12V control signal and 120V is connected to the charger.
It is most important that the charger is installed in accordance with the
installation guide and that DEFA´s original connection equipment is used, see
specific installation guide.
Some vehicles have a battery monitoring system. Connect ground according to
the vehicle manufacturer’s recommendation.
USE
The electronic battery charger has the following characteristics:
- 4A charging current.
- Advanced, battery friendly technology allows continuous operation.
- Temperature compensated charging ensures that the charging voltage for the battery is optimal under all conditions. (Only MultiCharger 1204R Flex)
- Light indication during charging: green pulse – charging, green light – fully charged, red pulse – error.
- Power distribution and integrated relay for switching engine and interior heater on and off.
The battery charger operates independently of the start timer for the car heating system. The charger switches to maintenance mode when the battery is fully charged. The charger can also be used to advantage in the summer. Avoid charging batteries in an enclosed area, as there is a potential danger of explosion. The ambient temperature of the battery should not exceed +40ºC during charging. The charger contains high voltage. In order to prevent potentially dangerous situations involving faulty batteries, the charger requires a back voltage of approximately 2V to start charging. It can therefore not be used as a 12V power supply (battery eliminator).
TECHNICAL INFORMATION
| MulitCharger 1204R Flex| MulitCharger 1204R Flex Li
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Item no.:| 453115| 453120
Type:| DMC1204RNAM| DMC1204RNAMLi
Applications| LA, GEL, EFB, AGM| Li-Ion*
Input Voltage[VAC/Hz]| 100-120/60
Maximum Charging Current [A]| 4
Operating temperature [ºC/F]| -40 to +50/-40 to +122
Charging Voltage [VDC]| 14.4 @ 25ºC/77F| 14.0
Maintenance charging [VDC]| 13.3-13.8| 13.8
Temperature compensation| 30mV/°C| 0
NEMA rating| Type 3, when cables are connected
120V PlugIn outlet [A]| 14
Fuse size 12V [A]| 7.5
Weight [g/oz]| 325 / 11.46
Measure (HxWxD) [mm/inch]| 107×71×38 / 4.2×2.8×1.5
The charger is tested and satisfies the standards:| UL 1236; CSA C22.2#107.2;
FCC Part 15, Subpart B; ICES-003
*Please check maximal charging voltage of your Li-Ion battery before connecting the charger.
Web: www.defa.com
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