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8. OPERATION
8.1 BEFORE CHARGING YOUR BATTERY
We recommend that the battery is disconnected from the vehicle, this will avoid any possible
damage to the alternator.
Loss of codes for audio and security etc, can be prevented by connecting a memory saving
device, or similar. Visit drapertools.com for our complete range of automotive products for further
information. Check that the voltage of the battery matches that of the charger.
8.2 MAINTENANCE TYPE BATTERY
Maintenance batteries have caps to access the chambers containing the plates and the
electrolyte. For a battery to function correctly and to ensure its working life, the level of the
electrolyte must be kept up to the maximum mark inside the chambers. This is particularly
important before charging. When topping up it is virtally important that eye protection and rubber
gloves are worn. It is necessary to maintain the electrolyte levels with distilled water, never use tap
water. When adjusted, the caps should remain off through out the charging process.
8.3 CONNECTING THE CHARGER TO THE BATTERY
Before connecting the battery charger to the battery ensure that the charger and battery are on a
level surface. If the battery has cell filler caps loosen or remove them to assist the escape of
charging gases.
If the battery is maintenance type, see above section: 8.2 MAINTENANCE TYPE BATTERY.
i. Adjust the12V/24V switch (6) to the appropriate setting.
ii. Connect the red positive lead (9) to the battery positive (+) terminal.
iii. Connect the black negative lead (10) to the battery negative (-) terminal.
Warning! Double check the polarity connection before proceeding. Incorrectly setting 24V for a
12V battery will result in damage.
8.4 CHARGING SEQUENCE
During the charging process the battery voltage must be continually monitored and the charging
output current adjusted.
i To begin charging set the power boost switch (3) to MIN.
ii Connect the mains supply.
iii Monitor the battery voltage with a suitable meter. When the voltage of the charging
battery reaches 12V (or 24V accordingly) switch the power boost switch (3) to MAX.
Warning! Switching to boost too soon can cause excessive charge current and the fuse
will blow.
iv. When the battery reaches a full charge the input current will reduce to zero on the
ammeter (8). Switch the charger off.
v. Disconnect the mains supply before following Section 8.3 in the reverse order.
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