ECTIVE Multiload PRO Battery Charger Instruction Manual
- June 11, 2024
- ECTIVE
Table of Contents
ECTIVE Multiload PRO Battery Charger
Overview
Congratulations and thank you for purchasing an ECTIVE Multiload Pro!
The ECTIVE Multiload Pro is a compact and versatile battery charging solution. It is compatible with a wide range of input voltages as well as different battery technologies (Wet, AGM, Gel, SLA, LiFePO4). The high charging capacity results in reduced charging times and the optimized, intelligent charging process follows multiple stages to maximize battery life.
These features, along with the high quality standards shared by all ECTIVE products, make the ECTIVE Multiload Pro the perfect solution for countless battery charging applications.
Please carefully read this manual before use.
Important Safety Advice
This manual offers instructions on safe handling, operation and maintenance of the device, as well as detailed information of installation and setup. Please always consult the documentation for any battery you intend to use in combination with this charger. Please read this manual carefully before installing or operating your ECTIVE Multiload Pro.
To prevent injury and to avoid damage to electrical equipment, please adhere to the following safety advice before operating the device, as well as any documentation accompanying your batteries.
- The installation and maintenance of this device should be performed only by a qualified service technician. There are high voltages inside the device. Incorrect installation, use or maintenance may result in fire or electric shocks. There are no user serviceable parts inside the device.
- Before servicing or installing the device, disconnect all other devices or batteries from the Multiload Pro.
- Working near batteries is dangerous, as batteries produce explosive gases during normal operation! To reduce the risk of a battery explosion, follow the instructions in this manual as well as the instructions from the battery manufacturer.
- When working near lead-acid batteries, be sure to have someone within shouting distance to come to your aid if necessary.
- Ensure access to plenty of fresh water and soap in case battery acid comes into contact with skin, eyes or clothing.
- Wear complete eye protection and protective clothing when working near batteries. Avoid touching your eyes.
- In case battery acid comes into contact with skin or clothing, wash immediately with soap and water. If acid enters an eye, immediately flush the eye with running cold water for at least 10 minutes and immediately seek medical attention.
- Never smoke near batteries. Avoid sparks and open flames.
- Do not allow metal objects to drop onto or bump against a battery, as this might produce sparks or short circuit the battery or another electrical device. This could result in a fire or explosion.
- Remove any metallic items from your body such as rings, bracelets, necklaces and watches. If such objects come into contact with the battery terminals, this may cause short circuit currents high enough to melt the item and cause severe burns.
Installation & Charging
- Never charge a frozen battery.
- Ensure that the battery is placed in a well-ventilated environment.
- Flooded batteries: Check the battery acid levels and add distilled water to each cell unit if necessary to fill it up to the specified level. This helps purge excessive gas from the cells. Do not overfill the cells. Carefully follow the refilling instructions supplied by the battery manufacturer.
- Prior to use, the device must be properly installed as described in these instructions.
- In case of a failure, a battery charger may produce sparks or electric arcs. Therefore, never install the device in the battery or engine compartment of your vehicle or near any source of explosive gases.
- Protect all wiring from physical damage, vibration, water and excessive heat.
- Ensure that the unit is properly set up for the type of battery intended to be charged.
- Do not expose the device to rain, snow or high levels of humidity.
- Ensure that all terminating connections are clean and tight to prevent arcing and overheating.
- Do not adjust any functions of the Multiload Pro, including current, voltage and battery type, while the device is running. Any adjustments must be made when the device is disconnected.
General Description
The Multiload Pro is an excellent solution for applications that require diverse ways of recharging batteries of different technologies. The Multiload Pro’s wide range of AC input voltages allows for operation with shore power and generators, making it suitable for many applications. The device’s reliable high frequency structure design allows it to accept a wide range of input voltages and accommodate unstable inputs.
Features
- Three stage variable charging voltage algorithm for maximizing battery lifetime: Bulk charging, absorption charging and float charging.
- High charging capacity for reduced charging time.
- Adjustable charge current control settings based on the connected battery’s capacity for safe charging process and avoiding overcharging.
- Wide range of input voltages.
- High AC to DC converting efficiency (> 80%)
- Smart fan control for optimized performance and extended fan life.
- Included battery temperature sensor to help maintain the battery life.
Installation and Operation
Caution!
Before connecting the Multiload Pro to a battery, power off the device.
DC Output Battery Connection
Always connect the battery first and the AC Power second.
Step 1
Place the battery cable ring terminal over the Multiload Pro’s battery terminal. Be sure to follow to the battery polarity indicated next to the terminals. Tighten the M6*12 Screw. Do not place anything between the flat part of the battery terminal and the battery cable ring terminal, as otherwise overheating may occur. Apply anti-oxidant paste to the terminals after they have been torqued.
Step 2
Connect the battery cables to your batteries.
Single battery connection: When using a single battery, its voltage must be equal to the voltage of the Multiload Pro’s nominal input voltage.
Series battery connection: When using multiple batteries in series, all batteries must have the same voltage and Ah capacity. The sum of their voltages must be equal to the Multiload Pro’s nominal input voltage.
Parallel battery connection: When using multiple batteries in parallel, each battery’ voltage must be equal to the voltage of the Multiload Pro’s nominal input voltage.
-
Single Battery
-
Series Connection
-
Parallel Connection
AC Input Connection: Use the provided AC cable and a breaker (minimum
10A).
Parallel Connection: To achieve higher charging currents, two Multiload
Pro devices may be connected in a parallel configuration.
Environmental Conditions
Operating temperature| Nominal ambient temperature: 25°C Operating ambient
temperature range: -10°C to 40°C
If the temperature rises above 90°C, the charge current will be reduced to
50%; if the temperature rises above 105°C, the device will automatically turn
off
---|---
Relative humidity| 5 to 95% without condensation
Storage conditions| -20°C to 80°C
Device cooling| Smart fan
Safety| UL458, CSA22 2#107 1
Noise during operation| Below 50dB (A) measured at 1m distance while fan is
working at full power
Protective Features
Input Over/ Under Voltage| When the voltage is within the input voltage range,
the device operates safely If the input voltage is outside this range, the
device may automatically limit the input current or shut down
---|---
Reverse Battery Polarity| Non-destructive reverse protection with fuses The
device will not sustain damage and normal operation is possible after
replacing the fuses
Output Over Voltage| Device will shut down if the charging voltage exceeds the
target charging voltage + 1 0VDC/1 5VDC for more than 2 seconds If the voltage
falls below the target voltage for 2 seconds, the device will restart
Charger Over Temperature| The device automatically shuts down if the
temperature exceeds 105°C It will restart if the temperature falls below 95°
Battery Temperature| The charging voltage and current are automatically
adjusted based on the battery‘s temperature
If the battery temperature is above 40°C, the charging voltage is reduced to float voltage and the current is reduced by 10% with every 2 degrees of temperature in- crease At a battery temperature above 50°C, the device will automatically shut down
Front Panel
-
Multiload 37 Pro and Multiload 75 Pro
-
Multiload 150 Pro
Main Switch
Once the Multiload Pro has been properly installed and the batteries are
connected, use the switch to turn the device on. Set the switch in the
appropriate position depending on whether you are charging a 12V or 24V
battery. The device will automatically begin operation according to the source
of the input voltage. Flip the switch to the “OFF” position to turn the device
off.
BTS Port
Connect a battery temperature (e.g. ECTIVE TS 1, sold separately) sensor to this port to ensure proper charging of the batteries based on their temperature. Using a BTS will help extend battery life by preventing overcharging in warm temperatures and undercharging in cold environments.
Ground Terminal
Connect the GND to the Ground Terminal using 8 AWG wire.
Battery Connector
Connect the battery to the positive (+) battery terminal and the negative (–) battery terminal. Do not reverse the polarity!
Rear Panel
-
Multiload 37 Pro and Multiload 75 Pro
-
Multiload 150 Pro
Input Terminal
The Multiload Pro accepts different input voltages from 90 to 286V (AC)
Charge Current Control Dial
Use this dial to adjust the level of charging current. The adjustment range is 10 to 100% of the maximum current rating.
LED Indicator
The Multiload Pro has green, yellow and red LEDs to indicate the device’s operating status. Consult the following table for the meaning of each LED signal.
| Conditions | Red | Yellow | Green |
|---|---|---|---|
| Mode select fault | Blinking 0 5s | Blinking 0 5s | Blinking 0 5s |
| Output voltage too low | Solidly lit | Blinking 2s | Off |
| Fan fault | Blinking 0 5s | Off | Off |
| Over temperature | Blinking 2s | Off | Off |
| Output over voltage | Solidly lit | Blinking 0 5s | Off |
| Output over current | Solidly lit | Solidly lit | Off |
| Input over/under voltage / Frequency | Solidly lit | Off | Off |
| Constant current/voltage | Off | Solidly lit | Solidly lit |
| Float stage | Off | Blinking 2s | Solidly lit |
| Battery over temperature | Off | Blinking 2s | Off |
Charge Voltage Selection
The Multiload Pro can provide four battery charging voltages which may be set using the switches.
| SW1 | SW2 | Fast Values | Float Values |
|---|---|---|---|
| 0 | 1 | 12 2V | 12V |
| 1 | 0 | 13 8V | 13 6V |
| 1 | 1 | 14 2V | 13 6V |
| 0 | 0 | 14 4V | 13 8V |
*Multiply values by 2 for 24V mode!
Note: Only adjust the switches when the device is turned off!
Troubleshooting
| Symptom | Probable Cause | Issues to examine or correct |
|---|---|---|
| Device completely dead, no LEDs are lit up | No battery power | Battery |
disconnected, over discharged or connected in reverse
Battery voltage too low| Battery voltage must be at least 10V for the device
to operate
Power switch is „Off“| Set power switch to „12V“ or „24V“
AC input is missing| Check AC input connections
Breaker has popped| Reset the input protector
Green, yellow and red LEDs blinking together at 0.5s|
Mode select fault
| 12V mode: adjust battery voltage lower than 15V 24V mode: adjust battery
voltage higher than 18V
Red LED blinking 0.5s, other LEDs off| Fan fault| Check the fan in the device
Red LED blinking 2s| The device is operating over temperature| The heat sink
area should not be hotter than 105°C for the device to operate safely
If an error occurs that is not covered in this manual, please call our customer support.
Technical Specifications
| Multiload 37 Pro | Multiload 75 Pro | Multiload 150 Pro |
|---|---|---|
| AC Input voltage | 90 to 286V | |
| Frequency | 30 to 70Hz | |
| Nominal input current at rated output | < 9A | |
| Output Nominal voltage | 12/24V (manual adjustment) | |
| Output Current | 37 5A (12V | |
| 18 75A (24V) | 75A (12V) | |
| 37 5A (24V) | 150A (12V) |
75A (24V)
Rated output current| Manual adjustment
Rated output (Watt)| 500W| 1000W| 2000W
Load regulation| 1 5%
Compatible batteries| 35 to 150Ah| 75 to 300Ah| 150 to 600Ah
Compatible battery types| Wet, AGM, Gel, SLA, LiFePO4
Battery type selection| 4 charging voltages available for manual selection
Parallel outputs| Maximum of two devices connected in parallel
Efficiency| 80%
Operating temperature| -10 to 40°C
Storage temperature| -20 to 80°C
Dimensions (L×W×H) in mm| 261×160×70| 261×160×70| 315×201×82
Weight| 1 8kg| 2 65kg| 4kg
Service / Complaints
If you have any questions about your device after purchase or during operation, we are happy to help you. To speed up the process, please provide information by email in advance, whenever possible with an explanation of the issue and photos.
To contact us and for product returns, please use the following service address:
batterium GmbH
Robert-Bosch-Straße 1, 71691 Freiberg am Neckar
T: +49 7141 / 560 90 40
[email protected]
Tip: When contacting us directly, please have your customer or invoice number and the article number ready.
In case you would like to return a product to us, please follow these guideline to ensure a quick and secure handling of the issue:
- If possible use the original packaging as shipping carton.
- If you no longer have the original packaging, please use suitable (UN-certified) packaging to ensure adequate protection against transport damage.
- If the goods are not shipped in the original packaging or a UN-certified packaging, the goods are considered damaged and will therefore need to be billed when the item is returned.
Please enclose the following with the return shipment:
- Copy of the invoice
- (Service Form)
- Reason for return
- An exact and detailed error description
Disposal
Please recycle or dispose of
the packaging material for this product.
The German Electronic Equipment Act (ElektroG) regulates how to place
electronic devices on the market, how to recycle and dispose of them.
Please note
In case of decommissioning of the device, please contact the nearest recycling centre or point of sale in order to get information about the disposal regulations.
Customer Support
ECTIVE stands for power supply solutions at an unbeatable price-performance
ratio.
Visit our website to explore more of our brand and products!
batterium GmbH
Robert-Bosch-Str. 1
71691 Freiberg am Neckar
Germany
Tel.: +49 7141 1410870
ECTIVE.DE
