ULTRAMAX 55A Lithium Battery Charger Instruction Manual
- October 30, 2023
- ULTRAmax
Table of Contents
ULTRAMAX 55A Lithium Battery Charger
This manual is subject to change when necessary without further notice. Our company is not responsible for the accident and the harm caused by user’s improper operation.
Summary
The battery charger has single chip microcomputer (MCU) controlled 3 stages intelligent charging technology, which can accurately track the battery charging process, and make the battery always in the best electrochemical reaction condition, in order to prolong its service life.
Charger input voltage range is wide, with multiple protection features, and
high reliability.
Control circuit adopts advanced high frequency transformer LLC half-bridge
resonant soft-switching power supply control technology, the reasonable
structure and thermal design make the charger with high efficiency, small
dimension, light weight and greatly improve the portability.
Application Scopes
This series chargers are widely used for charging Lithium batteries of electromobile, electric bicycle, electric tricycle, electric forklift, electric vehicles, electric motorcycles, electric sweepers, electric boats, electric sightseeing cars, electric golf cart, electric tractor, electric lift trucks, electric medical equipment, electric transportation trucks.
Maintenance and Precautions for Using
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Check the battery technical specification very carefully before charging, to make sure it matches the charger technical data.
The charger does not charge and the LED is always green the battery manufacturer to confirm. -
Make sure charger output connect to the batteries on correct polarity.
-
Input/output connectors must be connected firmly during charging.
-
Reverse connect or short circuit are prohibited during charging.
-
If charger or battery found to be abnormal or damaged during charge, please unplug input and output wires right away.
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If use other input wires, make sure the cable can withstand for the maximum input current of the charger, and the charger’ s input voltage is within its working scope.
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If you need to extend the output connection cable, please make sure the cable can withstand for the maximum output current of the charger, and the voltage-drop between the charger and connection wire of the battery should be less than 1% of the battery voltage as possible. Otherwise, it may affect the effect of charging process.
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High voltage and dangerous inside this charger, when there’s a defect, please contact with factory. Users and the maintain person who is not professional staff in our company are forbidden to open or re-develop this product.
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Never use during a lightning storm.
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Don’t wet the charger body, never use it in wet or rained place.
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Never use it near the heat source or where is shined by the straight sunshine.
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Never use it in or near the place of flammable gas.
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Use it in the ventilated and dustless place.
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Don’t place rod or other metal objects at vent or other openings.
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Never cover the air vent, always leave 10cm space for it at least.
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Don’t shake, bump or throw it strongly.
Use Method
- Close the power switch firstly.
- Connect the batteries to the output socket with output wires—positive to positive, negative to negative.
- Plug the input wires correctly and connect to the input power source then.
- Open the power switch, LED flashes blue means battery is being charged.
- LED always green means battery is fully charged, switch off the charger.
- Disconnect he input cable.
- Disconnect the output wires.
Product Features
- High efficiency, small size, light weight: Charger control circuit adopt advance LLC half-bridge resonant soft-switching power supply control technology, proper structure as well as nice thermal design make the charger small and light with good portability.
- Switching power supply type and MCU controlled charging technologies, exclusive precharge mode supplies activate, repair and prolonging life functions for long-term unused or deep sleep batteries.
- High reliability: The charger is made of high quality military and industrial levels components. Advanced circuit design and strict production process according to ISO 9001:2008 quality management system make the charger with low reject rate, high reliability and long service life.
- The charger is reliable with multiple protections, such as over temperature protection, output short-circuit protection, reverse polarity protection, output over-voltage protection, that prevent damage by faulty operations.
- The charger case is made of aluminum alloy with surface oxidation treatment, high-grade, fashion, good heat dissipation ability, high hardness, antioxidative, non-fading.
Technical Specifications
Input Voltage Range: AC100V~240V 45Hz~65Hz
Maximum Input Current: 12A
Operating Temperature: -10ºC~45ºC
Storage Temperature: -40ºC~75ºC
Relative Humidity: 5%~95%
Atmospheric pressure: 70 KPa~106 KPa
Dimensions (mm): 290(L) × 138(W) × 86(H)
Net Weight: 2.4Kg
Charging Mode
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Pre charge stage (T1): When the battery voltage is lower than its normal standard and cannot withstand high current charging, the charger will charge it at a current between lA to 8A.
This charging mode will be able to activate and repair the battery and extend the battery lifetime. When the output voltage reaches normal value or the charging time is in time period Tl, the charger will automatically switch to the Fast-Charging Stage -
Fast charge stage (T2): When the battery is in the main charging time, the charger will charge the battery with 40A current. When the battery voltage rises above 13.5v, the charger will automatically switch to the Floating Charging Stage
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Float charge stage (T3): The charger switches to the Floating Charging Stage and the charging current gradually decreases. When the charging voltage reaches 14.6V or the charging time is in time period T3, the charger automatically turns off the output voltage and the battery charging is completed.
Charge curve as below:
Protection Features
- Over Temperature Protection: When the charger internal temperature reaches protection point, the charger will stop charging automatically and the LED is always red alarm.
- Output Short-circuit Protection: When the charger appears short-circuit, it will cut off the output current and the LED is always red alarm.
- Reverse Polarity Protection: When the battery polarities are reversely connected, the charger will cut off the connection and the LED is always red alarm.
- Output Over-Voltage protection: When the charger output over-voltage, it will cut off the output current and the LED is always red alarm.
LED Indica
LED Status
|
Charger Status
---|---
LED (Charging) Flashes Blue| Battery is charging
LED(Full)Always on Green| Battery fully charged/Charger is not connected to
the battery.
LED(Error)Flashes Red| Charger under protection
- Over temperature protection.
- Output short-circuit protection.
- Reverse polarity connection protection.
- Output over voltage protection.
Troubleshooting
If the charger does not work properly, the following methods can help you solve the general problem quickly. If you still cannot rule out the possibility of failure, please contact ULTRAMAX at [email protected]
Failure Mode|
Troubleshooting Methods
---|---
LED light is not on| a. Input connector must be connected firmly.
b. Turn on the power switch.
The charger does not charge and the LED is always green| a. The output
connector must be connected firmly
b. Probable battery failure or damage: Con- tact the battery manufacturer
to confirm.
he charger does not charge, and the LED is always red| a. Make sure the
output polarity is correct.
b. Battery voltage is too high to match the battery charger. Contact the
battery manufacturer to confirm.
battery is not fully charged| a. The output connector must be firmly
connected
b. Output cable must not be too long.
c. Probable battery failure or damage: Con-tact the battery manufacturer
to confirm.
