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No matter whether wet-charged batteries
with acid are to remain in stock or are to be made ready
for sale |
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or are being used more than normal, a boosting-charge
without excessive over-charge should be given to |
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battery whenever the sp.gr falls 1.220/25¡É. |
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Battery storage for long periods of time
without recharging may accelerate grid corrosion and form
|
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boundary layers of nonconducting material
adjacent to the grid wires. This could result in the loss
of both |
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cold cranking and reserve capacity. |
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As under, two methods can be advisable for
a boosting-charge. |
| |
|
Conventional Charge |
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Battery are charged with a low charging
rate (1/10-1/20 electric current of battery capacity)
for a long |
| |
period of time. and charging volume is abt
120% - 150% of discharged current volume. |
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At this time, charging should be done under
the condition of temperature, 45¡É below. |
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During charge, voltage gradually
rises up after rapidly rising at the initial stage and
again rapidly rises |
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from time when voltage per cell is 2.35v-2.4v,
and finally it stabilizes (keep constant), when voltage
per |
| |
cell is 2.5-2.8v. |
| |
At this time, the sp.gr rises little by
little firstly but rises rapidly after a gas is generated
because this gas |
| |
generation means the proceeding of "chemical
reaction". |
| |
The sp.gr becomes to rise and after peaking
at the end of charing, it slowly becomes regular. |
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That is to say, charging is to be finished
|
| |
 |
|
High rate fast Charge |
| |
The fast charging method is one to charge
battery with a high charging rate (1/2- 1/1 current of
battery |
| |
capasity)for a short period of time. |
| |
This method is an emergency charging one
tl use when the engine does not start due tl discharging. |
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To avoid battery damage, stop charging when
the battery becames warm and begins gassing regardlwss
|
| |
of how long the battery has been charged
by a high-rate fast-charge. Generally, good is thr charging
of |
| |
battery under the condition of temperature,
55¡É below. |
| |
 |
|
Charging termination |
| |
If checked the following condition, charging
is be finished. |
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* The sp.gr of electrolyte is over 10280/25¡É
and this same value is recorded two times or more. |
| |
* Charging voltage over 15v is checked two
times or more. |
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* A gas is excessively generated from each
cell of battery. |
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* An expected charging time is to be finished.
|
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|
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Caution on Charging |
| |
Use charger correctly according to its service
manual. If mishandling charger, the battery and charger
are |
| |
to be damaged. |
| |
|
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Charger's positive terminal should be connected
with battery's positive one and negative terminal, |
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nega-tive one. |
| |
Series circuit
charging: |
| |
If charge many batteries at a time, originally,
only batteries of same capacity should be charged together.
|
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But if the capacity of battery is different
each other, charge batteries under the condition that
charging |
| |
current should be fitted to the smallest
capacity among them. |
| |
Parallel
curcuit charging: |
| |
Charging current can be out of balance.
T/fore, if using this charging method, correct the imbalance
of |
| |
charging current according to the charging
condition of battery. |
| |
|
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# Charging temperature
|
| |
¡Ü Normal charging : 45¡É below
|
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¡Ü Fast charging : 55 ¡É below
|
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When the temperature is over the above mentioned one
during charging, pls reduce a charging current or
|
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stop charging for a while and recharge battery again
after a temperature is down.
|
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|
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# Charging battery
on automobile |
| |
¡Ü Take off the lead on earth and charge
battery because it damages a kind of diode due to a high
|
| |
voltage, if charge battery
on the condition that the lead contacts automobile. |
| |
¡Ü Charge battery after the level because
the electrolyte is overflow while charging. |
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Greetings from CEO
