Gysflash 8.12 - Battery charger GYS - Free user manual and instructions
Find the device manual for free Gysflash 8.12 GYS in PDF.
| Product type | Battery charger |
| Brand | GYS |
| Model | Gysflash 8.12 |
| Output voltage | 12 V (6 cells of 2 V) |
| Charging current | 8 A |
| Compatible battery types | Lead (GEL, AGM, WET, MF, CA, etc.) |
| Battery capacity (charge) | 15 to 160 Ah |
| Battery capacity (maintenance) | Up to 240 Ah |
| Power supply | 220-240 V AC, 50-60 Hz |
| Charging modes | Charge (14.4 V / 8 A), AGM/Cold (14.7 V), Refresh (15.8 V), Supply (13.6 V / 8 A) |
| Charging cycle | 8 automatic steps (analysis, recovery, test, desulfation, fast charge, absorption, optional refresh, maintenance) |
| Protections | Short-circuit, reverse polarity, anti-spark, thermal |
| Temperature sensor | Integrated (adaptation of charging current) |
| Insulation | Double insulation (Class II) |
| Standards | European directives, EAC, British, Moroccan |
| Warranty | 2 years (parts and labor) |
| Recycling | Do not dispose of in household waste (selective collection) |
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USER MANUAL Gysflash 8.12 GYS
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Technical line drawing of a mechanical housing component with mounting holes and internal components (no text or symbols)FR 2-5 / 30-32
GYSFLASH 8.12 GYSFLASH 12.12
EN 6-9 / 30-32
DE 10-13 / 30-32
ES 14-17 / 30-32
RU 18-21 / 30-32
NL 22-25 / 30-32
IT 26-29 / 30-32
INSTRUCTIONS DE SÉCURITÉ

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| Time Interval | U (Line) | I (Line) | | ------------------- | -------- | -------- | | < 1s | Low | Low | | Max 5h | High | Low | | < 1s | High | Low | | Max 12h | High | Low | | Max 20h | Medium | Medium | | Max 8h | Medium | Medium | | 1h - 4h | High | Low | | no limit | Low | Low |ANOMALIES, CAUSES, REMÈDES
CONDITIONS DE GARANTIE
This manual contains safety and operating instructions, to be followed for your safety.
Please read it carefully before using the device for the first time and keep it for future reference.
This device may only be used for charging and/or power supply within the limits indicated on the device and manual. The operator must observe the safety precautions. In case of improper 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.
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.
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.

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_p (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.
GENERAL DESCRIPTION
Your Gysflash is ideal to charge most lead-acid batteries, often used for cars and many other vehicles. These batteries can be of many types ex: GEL (gel electrolyte), AGM (absorbed glass mat), WET, MF (Maintenance Free), CA (Calcium)...
The Gysflash 8.12 is designed to charge 12V batteries (6*2V elements) from 15Ah to 160Ah and up to 240Ah for floating charge.
The Gysflash 12.12 is designed to charge 12V batteries (6*2V elements) from 20Ah to 250Ah and up to 330Ah for floating charge.
Its power supply mode (SUPPLY) provides current for demonstration vehicles and enables battery replacement without vehicle system's memory loss.

AUTOMATIC TEMP. SENSOR
The GYSFLASH 12.12 is fitted with an integrated temperature probe that ensures that the voltage output is adapted to the ambient temperature. This adjustment is done in charge or in supply mode, it ensures a highly precise charge adapted to the ambient temperature.
START UP
- Connect the charger to the battery.
- Plug the charger to the mains (single phase 220-240Vac 50-60Hz).
- Select the mode by pressing the button. After roughly 5 seconds, the charge starts automatically.
- 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 OK stays on, the battery is completely charged.
- The charge can be interrupted at any time by unplugging the mains plug or pressing the button.
- After charging, disconnect the charger from the mains, then disconnect the charger's connections from the battery.
CHARGE MODES
- Modes and Options description:

CHARGE mode (14.4V / 8A-12A):
Mode designed to charge and maintain (floating charge) 12V lead-acid batteries. 8 steps automatic maintenance cycle.

AGM
COLD/AGM or AGM Option (14.7V):
Modifies the charging voltage at 14.7V for some AGM batteries or batteries with caps. For the Gysflash 8.12, this option allows to charge the battery during cold weather (Less than 5°C).
refresh
REFRESH Option (15.8V):
Option which add an extra step (step 7) to the charge cycle to restore deeply discharged batteries. ⚠: this option is not recommended for charging sealed batteries.
Recommendation: Check the battery's water level and if necessary, perform with a Refresh charge.

SUPPLY Mode (13.6V/7A):
This mode enables to use the charger as a stabilised power supply, with a voltage regulated at 13.6V. 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 volvage is properly regulated. If the indicator blinks, this means that the current absorbed by the battery is higher than the charger's maximum current (8A or 12A) and that the battery might end up being discharged.
- Charging curve:
The GYSFLASH 8.12 and 12.12 use an 8 steps charging curve which guarantees optimal performance for your battery.

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| Time Interval | U (Line) | I (Line) | | ------------- | -------- | -------- | | < 1s | Low | Low | | Max 5h | High | Low | | < 1s | High | Low | | Max 12h | High | Low | | Max 20h | Medium | Low | | Max 8h | Medium | Low | | 1h - 4h | High | Low | | no limit | Low | Low |Step 1 : Analysis
Analyses the battery state (charge level, polarity inversion, wrong battery...)
Step 2: Recovery (3A-4A)
Damaged elements recovery due to an extended deep discharge algorithm.
Étape ③ : Test
Sulfated battery test
Step 4 : Desulfation (15.8V)
Battery desulfation algorithm.
Step 5: Charge (8A-12A)
Fast charge with maximum current that can reach 80% charge level.
Step 6 : Absorption (14.4V or 14.7V with option ✕/AGM)
Constant voltage charge to reach a 100% charge level.
Step 7: Refresh (option 15.8V)
If the refresh option has bene selected, the charger will inject an additional current that will generate some gas, thus reconditioning the battery's cells. During this phase, the battery may lose a bit of water.
Step 8: Floating charge (13.6V)
Maintains battery charge level at its maximum.
| ● Estimated charge time | GYSFLASH 8.12 | GYSFLASH 12.12 | ||||||
| Battery capacity 20Ah 50Ah 100Ah 160Ah | 20Ah | 50Ah | 100Ah | 160Ah | 250Ah | |||
| Charging time 20% >>> 80% 2h 5h 9h | 14h | 1h | 3h | 5h | 13h | |||
- Protections :

The GYSFLASH 8.12 and 12.12 have several features to protect them against short-circuits or polarity inversions. They have 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 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 blinks. | Polarity inversionBattery voltage is too highClamps in short-circuit | Check that the clamps are properly connected.Check that it is a 12V battery. |
| 2 | The indicator is on. | Charge failure, battery non recoverable. | Change the battery and press to restart a charge. |
| 3 | The indicator stays on even after pressing the button. | Thermal protection. | Ambient temperature is too high (>50°C), cool the room and let the charger cool down. |
| 4 | The indicator blinks. | Charger in sleep mode. | Press the button or connect a battery to the charger to exit sleep mode. |
| 5 | The indicator stays on. | 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
SICHERHEITSHINWEISE

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| Time Period | Voltage (U) | Current (I) | | ----------------- | ----------- | ----------- | | < 1s | Low | Low | | Max 5h | High | Low | | < 1s | High | Low | | Max 12h | High | Low | | Max 20h | Medium | Low | | Max 8h | Medium | Low | | 1h - 4h | High | Low | | no limit | Low | Low |Stufe 1: CC Test
Stufe 5: Charge (8A-12A)
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| Time Period | U | I | | ----------------- | ------- | ------- | | < 1s | High | Low | | Max 5h | Medium | Low | | < 1s | Low | Low | | Max 12h | High | Low | | Max 20h | Medium | Low | | Max 8h | Low | Low | | 1h - 4h | High | Low | | no limit | Low | Low |Etapa 1 : Análisis
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| Time Interval | Intensity | | ------------- | --------- | | < 1s | Low | | Max 5h | Low | | < 1s | Low | | Max 12h | Low | | Max 20h | Low | | Max 8h | Low | | 1h - 4h | Low | | no limit | Low |Этап 1 : Анализ
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| Time Period | U | I | | ----------------- | ---- | ---- | | < 1s | High | Low | | Max 5h | High | Low | | < 1s | High | Low | | Max 12h | High | Low | | Max 20h | High | Low | | Max 8h | High | Low | | 1h - 4h | High | Low | | no limit | High | Low |Fase 1: Analisi
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2 3 4 5 OK U I 7 refresh 8
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SUPPLY CHARGE ADVANCED OPTIONS 136V 15,460Ah refresh AGM GYSFLASH 8.12 GYS 8 STEPS SMART CHARGER - 78A 12V
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8.12 ⑪ ⑩
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2 3 4 5 OK 7 refresh AUTOMATIC TEMP. SENSOR
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SUPPLY CHARGE ADVANCED OPTIONS 13.6V 20kΩ refresh ADM GYSFLASH 12.12 GYS 8 STEPS SMART CHARGER - 712A 012V 16789
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12.12 ⑪ ⑩FR EN DE ES RU NL IT
| 1 | Boutonde sélection | Selection button Auswahl-Taste | Botón deselección | Кнопка выбора Selectie knop Tasto di selezione | |||
| 2 | Veille Sleep mode STAND BY En espera Режим ожидания Stand by Veglia | ||||||
| 3 | Charge en cours | Charging | Ladefortschritt | En proceso decarga | Идет зарядка Opladen is bezig Carica in corso | ||
| 4 | Charge terminée Charge finished | Aufladen beendet | Carga terminada | Зарядказакончена | Opladen klaar Carica terminata | ||
| 5 | Défaut | Fault | Fehler | Fallo | Ошибка | Fout | Predefinito |
| 6 | Mode Supply | Supply mode | Supply-Modus | Modo Supply | Режим Supply | Supply Modus | Modo Supply |
| 7 | Mode Charge | Charge mode | Charge-Modus | Modo Carga | Режим Зарядки | Laad Modus | Modo Carica |
| 8 | Option Froid/AGM | Cold/AGM option | Kühl/AGM-Option | Оpción Frío/AGM | Опция Холод/AGM | Optie Koud/AGM | Opzione Freddo/AGM |
| 9 | Option Refresh | Refresh option | Refresh-Option | Оpción Refresh | Опция Refresh | Optie Refresh | Opzione Refresh |
| 10 | Pinces de charge | Charge clamps | Ladeklemme | Pinzas de carga | Зажимы зарядки | Laad klemmen | Morsetti di carica |
| 11 | Prise secteur | Mains plug | Netzstecker | Clavija de corriente | Сетевая вилка | Stopcontact | Spina |

blinks.
is on.
stays on even after pressing the
button.
blinks.
stays on.