GYS 026049, Manual

Page: 10 / 48

10
GYSFLASH 20.12/24 PL
EN
GENERAL DESCRIPTION
GYSflash 20.12/24 PL is designed to charge lead-acid batteries (Gel, AGM, Liquid, ...) and Lithium Iron Phosphate (LFP / LifeP04).
This charger is suitable to recharge :
- Lead-acid batteries 12V (6 elements in series) from 15 Ah to 375 Ah.
- Lead-acid batteries 24 V (12 elements in series) from 15Ah to 240Ah.
- Lead-acid batteries LFP 12V (4 elements in series) from 7Ah to 300Ah
- Batteries LFP 24V (8 elements in series) from 7Ah to 240Ah
GYSFLASH 20.12/24 PL is equipped with an integrated temperature sensor to adjust the charging current
based on the ambient temperature for an optimal charging performance. This adjustment ensures a highly
precise charge, relative to the temperature of the room.
CALIBRATION CABLE
Procedure for the calibration of the charging leads in order for the charger to compensate any voltage drop due to the length or
condition of the cables. It is strongly recommended to perform this procedure each time the cables are modified or changed.
1. Before undertaking the procedure, make sure that the charger is disconnected from the mains socket.
2. Short-circuit the ends of the charging leads.
3. Press buttons and simultaneously.
4. Plug in the mains plug while holding down the two buttons until the indicator light or lights up. Résults :
- Indicator is on: the calibration was successful.
- Indicator is on: the calibration failed, disconnect the mains plug and restart the procedure.
5. Unplug the mains plug until the charger switches off.
START UP
1. Connect the charger to the battery.
2. Plug the charger to the mains (single phase 220-240Vac 50-60Hz).
3. Select the mode by pressing button
), and the charging current by pressing button . After roughly five
seconds, the charge starts automatically. By default, the charger starts on the last mode used.
4. During the charge, the device indicates the charge progress. When indicator
blinks, the battery is ready to start the vehicle.
Once indicator stays on, the battery is fully charged.
5. The charge can be interrupted at any time by unplugging the mains plug or pressing the button.
6. After the charge, disconnect the charger from the mains, then disconnect the clamps from the battery.
CHARGE MODES
• Description of charging modes and currents :
Mode CHARGE lead-acid (14.6 V/20 A max) :
Mode designed for the recharge of 12V lead-acid batteries from 15 Ah to 300 Ah. Automatic seven step
charge cycle.
Mode CHARGE lead-acid (29.2 V/15 A max) :
Mode designed for the recharge of 12V lead-acid batteries from 15 Ah to 240 Ah. Automatic seven step
charge cycle.
Mode CHARGE Lithium (14.4 V/20 A max) :
Mode designed for the recharge of 12 V lithium batteries from 7 Ah to 300 Ah. 8 step automatic mainte -
nance charge cycle.
Mode CHARGE Lithium (28.8 V/15 A max) :
Mode designed for the recharge of 24 V lithium batteries from 7 Ah to 240 Ah. 8 step automatic mainte -
nance charge cycle.
Some Lithium batteries incorporate a UVP protection (Under Voltage Protection) which
disconnect the battery in case of deep discharge. This protection prevents the charger from
detecting the battery. In order for the Gysflash 20.12/24 PL to be able to charge the battery,
it is necessary to deactivate the UVP protection. To do this, select the Lithium charging mode
and press the button
for 10 seconds. The charger will then deactivate the UVP
protection and automatically start charging.