Safety Instructions

• Explosive gases may escape from the battery during charging. Prevent flames and sparks. Provide adequate ventilation.
• Before charging, read the instructions.
• For indoor use. Do not expose to rain.
• Make sure a charger is for AGM-VRLA batteries or Li-ion batteries before use and find a right charger for a battery from the size and voltage    specified in the specifications table).
• Disconnect the before making or breaking the connections t city power o the battery.
• The battery charger must be plugged into an earthed socket-outlet.
• Connection to supply mains is to be in accordance with National wiring rules.
• Do not attempt to charge non-rechargeable batteries.
• Never charge a frozen battery.
• If AC cord is damaged, do not attempt to use. It must be repaired by a qualified person.
• Corrosive substances may escape from the battery during charging and damage delicate surfaces. Store and charge in a suitable area.
• Ensure all vehicle accessories including lights, heaters, appliances etc are turned off prior to charging.
• This charger is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of

experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible

for their safety.

• Young children should be supervised to ensure that they do not play with the appliance.
• Do not put or drop a metal tool on a battery. The resulting spark or short-circuit on the battery will cause explosion.
• Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a battery. A battery produces a short-

circuit current high enough to weld anymetal objects and will cause a severe burn.
• There are high temperature and high pressure inside the product, and only trained and qualified professionals can install, operate and

maintain this battery charger.
• In the installation, operation and maintenance of the equipment, the local safety regulations and relevant operating procedures must be

observed, otherwise personal injury or equipment damage may result.
• The manufacturer is not responsible for any personal injury or equipment damage caused by violation of general safety operation

requirements or violations of safety standards for design, production and use of equipment.

Product Description

This product is a high frequency three-stage battery charger. The working processes are divided into the three stages: constant voltage charging mode, constant current charging mode and floating charging mode. It applies to all types of lead-acid battery and is widely
used in various industrial and mining enterprises and civil fields. The main features are as follows:

1. High frequency working principle, small size, light weight and high efficiency
2. Simple operation and strong applicability
3. With reverse polarity protection (Fuse burns out)
4. All aluminum shell with good heat dissipation
5. Mature technology, stable performance and long service life
6. A wide selection of battery chargers, cost-effective

Charging Curve

Mechanical Parameters

Technical Parameters

Charger Selection

1. According to voltage and capacity of a battery, you can select right chargers for your batteries. Please see Table 2 for reference.

2. Connect a charger and a battery with wires

A. Check the voltage of the battery or battery pack to see if it matches the nominal voltage of the charger. Make sure the charger is off

before connecting.

B. Select the correct wire whose diameter to match the charging circuit as the connection line between the charger and the battery. You’d

better use the original wires provided by the factory if it included in the package.
C. Connect the red terminal of the charger (DC Positive +) to the battery postive + with wire. Connect the black terminal of the charger (DC

Negative -) to the the battery negative - with wire. This unit does not have reverse polarity protection.

3. Turn on the charger: After checking the charger is connected to the battery correctly, switch ON the charger. The indicator light is red, and

the charger starts to work.
4. Shut down the charger: When the battery is full charged, the red light is off and the indicator light turns green. At this time, switch OFF the

unit, remove the connection wires between the charger and the battery and the charging is over.

Function & Strcuture Diagram

Quality Warranty

1. In order to ensure no quality defectives, all of chargers are under strict quality test and inspection before shipment. Koyosonic offers 13-

month quality warranty and this means we will give you free replacement by new ones or just provide you with some spare parts to repair

if there is any faulty chargers made from us during warranty period.

2. This limited warranty claims can not be included:
A. Any damages or failures resulting from abnormal operation.
B. Dismantle chargers without any authorization.
C. Do not follow our operation guide or abuse chargers.