Gysflash S 4.12 - Battery charger GYS - Free user manual and instructions

Product Type	Battery Charger
Brand	GYS
Model	Gysflash S 4.12
Input Voltage	100-127 Vac, 50-60 Hz
Charge Current	0.8 A (Charge 0 mode) / 4 A (Charge mode)
Charge Voltage	14.4 V (standard), 14.7 V (cold/AGM), 13.6 V (supply mode)
Compatible Battery Types	Lead 12 V: GEL, AGM, WET, MF, Calcium
Battery Capacity (charge)	1.2 Ah to 90 Ah
Battery Capacity (maintenance)	Up to 130 Ah
Charge Modes	Charge 0 (0.8 A), Charge (4 A), Supply 13.6 V (4 A)
Charge Cycle	7 automatic steps: analysis, recovery, test, desulfation, charge, absorption, maintenance
Protections	Reverse polarity, short-circuit, anti-spark, thermal, overload
Double Insulation	Yes (class II)
On-board Electronics Compatibility	Yes, suitable for CAN-BUS systems
Warranty	2 years (parts and labor)
Included Accessories	Clamps, terminals (depending on version)
Maintenance and Cleaning	Disconnect before cleaning; do not use abrasive products
Safety	Do not charge non-rechargeable batteries; use in a ventilated area; avoid flames
Spare Parts and Repairability	A damaged power cable must be replaced by a professional
General Information	Manufactured by GYS, France; compliant with European, British, Moroccan standards

Frequently Asked Questions - Gysflash S 4.12 GYS

What types of batteries can I charge with the Gysflash S 4.12?

This charger is designed for 12 V lead batteries of type GEL, AGM, WET, MF and Calcium. Not suitable for lithium or non-rechargeable batteries.

How to use the Supply mode?

Press the button for 5 seconds to enter Supply mode. This mode provides a stabilized voltage of 13.6 V with a maximum current of 4 A, ideal for powering showroom vehicles or preserving memory.

What to do if the OK light flashes but does not stay on?

The OK light flashes when the battery is ready to start the engine (charge > 80%). If it flashes in Supply mode, this means that consumption exceeds 4 A and the battery may discharge. Check connections and reduce the load if possible.

Can I charge a frozen battery?

No, never charge a frozen or damaged battery. This may cause an explosion. Wait until the battery thaws before charging.

How to charge via a cigarette lighter socket?

Use the cigarette lighter adapter (ref. 029439) connected to the charger. Plug it into the 12 V socket of the motorcycle. The charger works even with CAN-BUS system without turning on the dashboard. Charging may start after 2 minutes of connection.

How long to charge a 50 Ah battery?

With Charge mode (4 A), the time to go from 20% to 80% charge is approximately 6 hours. A full charge may take up to 12 hours depending on battery condition.

What does the error light (fault) mean?

The error light may indicate: reverse polarity, non-12 V battery, damaged battery, clamp short-circuit, or internal overheating. Consult the manual for remedies.

How to clean the charger?

Always disconnect the charger before cleaning. Use a dry or slightly damp cloth, without abrasive products. Avoid moisture in openings.

Is it safe to leave the charger plugged in permanently?

Yes, the maintenance charge mode (step 7) maintains the battery at its maximum without risk of overcharging. However, monitor the battery and avoid long periods unattended.

Where to find the declaration of conformity?

The European, British (UKCA) and Moroccan (CMIM) declaration of conformity is available on the GYS website: www.gys.fr.

USER MANUAL Gysflash S 4.12 GYS

Technical line drawing of a mechanical housing component with mounting holes and internal components (no text or symbols)

FR	2-5 / 26-28
EN	6-9 / 26-28
ES	10-13 / 26-28
PT	14-17 / 26-28
CN	18-21 / 26-28
JP	22-25 / 26-28

GYSFLASH S 4.12

INSTRUCTIONS DE SÉCURITÉ

ANOMALIES, CAUSES, REMÈDES

CONDITIONS DE GARANTIE

This manual contains safety and operating instructions.

Read it carefully before using the device for the first time and keep it in a safe place for future reference. This machine should only be used for charging and / or power supply operations comprised within the limits indicated on the machine and in the instruction manual. The operator must respect the safety precautions. In case of inedaquate or unsafe use, the manufacturer cannot be held liable.

This unit can be used by children aged of at least 8 years and by people with reduced physical, sensory or mental capabilities or lack of experience or knowledge, if they are properly monitored or if instructions for using the equipment safely was given to them and if they have been made aware of the risks. Children must no play with the product. Cleaning and maintenance should not be performed by unsupervised children.

Do not use to charge small batteries or non rechargeable batteries.

Do not operate the device with a damaged power supply cord or a damaged mains plug.

Do not use the device if the charging cable appears to be damaged or assembled incorrectly in order to avoid any risk of short circuiting the battery.

Never charge a frozen or damaged battery.

Do not cover the device

Do not place the device near a fire or subject it to heat or to longterm temperatures exceeding 50^ C

The operating mode of the automatic charger and the restrictions applicable to its use are explained below in this manual.

Fire and explosion risks!

A charging battery can emit explosive gases.

• During the charge, the battery must be placed in a well ventilated area.
• Avoid flames and sparks. Do not smoke.
• Protect the electrical contacts of the battery against short-circuiting.

Do not leave a charging battery unattended for a long time

Connection / disconnection:

• Ensure that the charger's power supply is disconnected before plugging or unplugging the connections on the battery.
• Always ensure the Red clamp is connected to the «+» battery terminal first. If it is necessary to connect the black clamp to the vehicle chassis, make sure it is a safe distance from the battery and the fuel/exhaust pipe. The charger must be connected to the mains.
• After charging, disconnect the charger from the mains, then disconnect the clamp from the car body and then disconnect the clamp from the battery, in the indicated order.

Connection:

• Class II device
• The connection to the power supply must be carried out in compliance with national standards.

Maintenance:

• If the power cable is damaged, it must be replaced by the manufacturer, its after sales service or an equally qualified person to prevent danger.
  • Service should be performed by a qualified person
• Warning! Always remove the power plug from the wall socket before carrying out any work on the device.

Regulations:

• Machine compliant with European directives.
- The certificate of compliance is available on our website.
• EAC Conformity marking (Eurasian Economic Community)
- Equipment in compliance with British requirements. The British Declaration of Conformity is available on our website (see home page).
• Equipment in conformity with Moroccan standards.
- The declaration C_ (CMIM) of conformity is available on our website (see cover page).

Waste management:

- This product should be disposed of at an appropriate recycling facility. Do not throw away in a domestic bin.

Do not operate on 230V - risk of explosion!

GENERAL DESCRIPTION

The GYSFLASH S 4.12 is ideal to charge most lead-acid batteries, often used for cars and many other vehicles. These batteries can be of many types eg: GEL (gel electrolyte), AGM (absorbed glass mat), WET, MF (Maintenance Free), CA (Calcium)... This charger has been designed to charge 12V batteries (6*2V elements) from 1.2 Ah to 90 Ah, or for floating charge up to 130 Ah.

START UP

1. Connect the charger to the battery using the proper accessory (clamps, lugs, etc...).
2. Plug the charger to the mains (single phase 100-127 Vac 50-60Hz).
3. Select the mode by pressing the button. After roughly 5 seconds, the charge starts automatically.
4. During the charge, the device indicates the charge's progress. When the indicator OK blinks, the battery is ready to start the vehicle. Once the indicator stays on, the battery is completely charged.
5. The charge can be interrupted at any time by unplugging the mains plug or pressing the button.
6. After charging, disconnect the charger from the mains, then disconnect the charger's connections from the battery.

CHARGE MODES

- Modes and Options:

CHARGE mode (14.4V/0.8A) :

Mode designed for lead-acid batteries, 12V from 1.2 Ah to 15Ah. 7 step automatic maintenance cycle.

CHARGE mode (14.4V/4A) :

Mode designed for lead-acid batteries, 12V from 15 Ah to 90 Ah and up to 130 Ah for floating charge. 7 step automatic maintenance cycle.

AGM

COLD/AGM Option (14.7V) :

Modifies the charging voltage at 14.7V to charge the battery during cold weather (Less than 5°C) or for some AGM batteries or batteries with caps.

SUPPLY Mode (13.6 V/4 A):

This mode enables to use the charger as a stabilised power supply, with a voltage regulated at 13.6 V. This mode is designed for providing a power supply to demonstration vehicles and can also be used to replace a vehicle's battery while maintaining the system's memory. With this mode, there is no time limit.

When the OK indicator is on, the voltage is properly regulated. If the ▲ indicator blinks, this means that the current absorbed by the battery is higher than the charger's maximum current (4 A) and that the battery might end up being discharged.

To access to this mode, press 5 seconds on the button. When this mode is selected, the three blue indicators for mode selection light on. And after roughly 5 seconds, the charge starts automatically.

- Charging curve :

The GYSFLASH S 4.12 use an 7 step charging curve which guarantees optimal performance for your battery.

CHARGE OK

Step 1: Analysis

Analyses the battery state (charge level, polarity inversion, wrong battery...)

Step 5: Charge (63A 4A)

Fast charge with maximum current that can reach 80% charge level.

Step 2 : Recovery (05A 2A)

Damaged elements recovery due to an extended deep discharge algorithm.

Step 6 : Absorption (14.4V or 14.7V with AKM option)

Constant voltage charge to reach a 100% charge level.

Step 3 : Test

Sulfated battery test.

Step 7 : Floating charge (13.6V)

Maintains battery charge level at its maximum.

Step 4 : Desulfation (15.8V)

Battery desulfation algorithm.

• Estimated charge time
Battery capacity 2Ah 8Ah 15Ah 18Ah 50Ah	90Ah
Charging time 20% >>> 80%	2h	6h	11h

3h	8h	14h

If the motorbike is fitted with a 12V plug, the GYSFLASH S 4.12 can charge the battery via this plug with the CAN-BUS system, without switching the dashboard on. In this setup, connect the cigarette lighter adapter on the charger and on the motorbike's 12V socket then follow the «start up » procedure on the previous page. In certain cases, it is possible that the charge will only start 2 minutes after performing the connections.

- Protections :

The GYSFLASH S 4.12 has several features to protect it against short-circuits or polarity inversion. It has an anti-spark feature which prevents sparks whilst connecting the device to the battery. This charger has double insulation and is compatible with vehicle's onboard electronics.

The GYSFLASH S 4.12 is fitted with an integrated temperature probe that ensures that the charging current is adapted to the ambient temperature to prevent internal electronics' overheating.

TROUBLESHOOTING

	Symptoms	Causes	Remedies
1	The indicator	· Polarity inversion· Battery voltage is too high· Clamps in short-circuit	· Check that the clamps are properly connected.· Check that it is a 12V battery.
2	The indicator	Charge failure, battery non recoverable.	Change the battery and press to restart a charge.
3	The indicator on even after pressing the	Thermal protection.	Ambient temperature is too high (>50°C), cool the room and let the charger cool down.
4	The indicator	Charger in sleep mode.	Press the button or connect a battery to the charger to exit sleep mode.
5	The indicator	Charge interrupted by pressing the button.	Press again to restart the charge.

WARRANTY

The warranty covers faulty workmanship for 2 years from the date of purchase (parts and labour).

The warranty does not cover:

• Transit damage.
• Normal wear of parts (eg. : cables, clamps, etc..).
• Damages due to misuse (power supply error, dropping of equipment, disassembling).
• Environment related failures (pollution, rust, dust).

In case of failure, return the unit to your distributor together with:

• The proof of purchase (receipt etc ...)
• A description of the fault reported

Etapa 1 : Análisis

Voyant CHARGE OK

Passo 1 :Análise

! CE EAC UKA #

ステップ①: 分析

Diagram showing automotive electrical connections with labeled components including plug, charger, motor, car, and cable.

	FR	EN	ES	PT	CN	JP
1	Bouton de sélection	Selection button	Botón de selección	Botão de escolha	选择键	選択 ボタン
2	Veille	Sleep mode	En espera	posição de espera	待机	スタンバイ
3	Charge en cours	Charging	En proceso de carga	Carga em progresso	正在充电	充電中
4	Charge terminée	Charge finished	Carga terminada	Carga completa	充电完成	充電終了
5	Défaut	Fault	Fallo	defeito	故障	デフォルト
6	Mode Charge	Charge mode	Modo Carga	Modo Carga	充电模式	充電モード
7	Mode Charge	Charge mode	Modo Carga	Modo Carga	充电模式	充電モード
8	Option Froid/ AGM	Cold/AGM option	Opción Frío/AGM	Opção Frio/AGM	冷/AGM选项	コールド/ A G M オプション
9	Pinces de charge	Charge clamps	Pinzas de carga	Pinças de carga	充电夹	充 電クランプ
10	Oeillets de charge	Charge terminals	Terminal de carga	Ilhós de carga	充电孔	充電端子
11	Prise secteur	Mains plug	Clavija de corriente	Tomada sector	电源插座	主電源

GYS France

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