Battery Test Charging - Dinli DL-801 Service Manual

ELECTRICAL SYSTEM
Charging Procedure
● Remove the battery (see Battery Removal).
● Connect a charger to the battery BEFORE plugging it in
or turning it on.
● Set the charging rate and time according to the battery
condition previously determined
CAUTION
Always remove the battery from the vehicle for
charging. Do not use a high rate battery charger, as is
typically employed at automotive service stations, unless
the charger rate can be reduced to the level required.
Charging the battery at a rate higher than specified may
ruin the battery. Charging at a high rate causes excess
heat, which can warp the plates and cause internal
shorting. Higher-than-normal charging rates also cause
the plates to shed active material. Deposits will
accumulate, and can cause internal shorting
● Turn the charger off or unplug it, then disconnect it from
the battery.
● Check battery condition.
If the battery condition indicates that is not fully charged,
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additional charging time is necessary.

Battery Test Charging

● If the battery is suspected of being defective, sulfated, or
unable to take a charge, consult the table.
● To test charge a battery, perform the ordinary charging
procedure and monitor the battery voltage and other signs
as mentioned below.
If the battery voltage suddenly jumps to
★
after the start of charging, the plates are probably sulfated.
A good battery will rise to 12 V immediately and then
gradually go up to 12.5 or13 V in about 30 min. to an hour
after the start of charging.
● If there does not appear to be enough sediment in a cell to
short the plates, but that cell has a very low specific
gravity after the battery is fully charged, the trouble may
be that there is not enough acid in that one cell. In this
case only, sulfuric acid solution may be added to correct
the specific gravity.
If a fully charged battery not in loses its charge after 2 to 7
★
days; or if the specific gravity drops markedly, the battery is
defective. The self-discharge rate of a good battery is only
about 1% per day.
over 13 V just
【7-8】