Yiyuan Electric Co., Ltd www.yiyen.com
8
selection*). In this stage, the batteries are kept fully charged and ready if needed by the inverter.
If the A/C is reconnected or the battery voltage drops below 12Vdc/24Vdc, the charger will reset the cycle
above.
If the charge maintains the float state for 10 days, the charger will deliberately reset the cycle to protect the
battery.
Battery type selector
Switch setting
Description
Boost / Vdc
Float / Vdc
0
Charger Off
1
Gel USA
14.0
13.7
2
AGM 1
14.1
13.4
3
AGM 2
14.6
13.7
4
Sealed lead acid
14.4
13.6
5
Gel EURO
14.4
13.8
6
Open lead acid
14.8
13.3
7
Calcium
15.1
13.6
8
De sulphation
15.5 (4 Hours then Off)
9
Not used
12Vdc Mode (*2 for 24Vdc ; *4 for 48Vdc)
De-sulphation
The de-sulphation cycle on switch position 8 is marked in red because this is a very dangerous setting if you
do not know what you are doing. Before ever attempting to use this cycle you must clearly understand what
it does and when and how you would use it.
What causes sulphation? This can occur with infrequent use of the batteries, or if the batteries have been left
discharged so low that they will not accept a charge. This cycle is a very high voltage charge cycle designed
to try to break down the sulphated crust that is preventing the plates taking a charge and thus allow the plates
to clean up and so accept charge once again.
Charging depleted batteries
The APC series inverter allows start up and through power with depleted batteries.