List of products by manufacturer GYS 
GYS FLASH 4.12 battery charger
029422The GYS FLASH 4.12 is particularly recommended for recharging motorcycle, jet-ski, karting and light vehicle batteries in 12 V
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BT2010 DHC BATTERY TESTER - START / STOP
055339BT2010 DHC Battery Tester Multi-function electronic tester: battery, starter, alternator charging circuit, start & stop
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START 300 Starter Charger
025547START 300 Starter Charger This charger / starter can maintain your batteries even very discharged.
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DIAG-STARTIUM 60-12 Starter Charger
026513Charger / automatic starter for 12 V battery The DIAG-STARTIUM 60-12 is an automatic 12V wheel loader / starter. Controlled by microprocessor, it guarantees maximum efficiency and safety. Versatile, it can be used as a stabilized power supply (60A) during the diagnostic phases.