Page 1182 - Workshop Manual - Aumark (BJ1051)

53-6
Battery-Battery

Application and maintenance

1. Charging device
Notes:
It is a must to use DC to charge the battery; the AC supplied by power plant should be transformed
to DC.
(a). Rectifier
Solid rectifier (copper oxide rectifier, selenium rectifier and silicon rectifier)in common,
charging pipe rectifier (tungsten lamp rectifier and mercury rectifier are the commonly used
rectifier. The input AC voltage normally is 110V or 220V, and then output nominal voltage
is 6V, 12V and 24V. Solid rectifier is used normally because it is easy to be used and needs
not care during charging.
(b). Controllable silicon voltage-regulated battery charger
During charging, it will need change the voltage to control the charging current because
the quantity of series connected batteries are different; the DC with adjustable voltage is
necessary. Silicon rectifier is light, small and easy to be moved, but there is still requirement
to heavier voltage-regulated transformer. The controllable silicon voltage-regulated battery
charger can overcome the above defect. There is a kind of 8KW controllable silicon
voltage-regulated battery charger in the market, which converts 220V AC through
controllable silicon rectifier. And the output DC is 0-220V and the output current is 0-4A.
2. Notices during charging
(a). Charge the battery in a dry and ventilated room, and the temperature should be between
5-40℃.
(b). Do not pile the batteries and do not put it on the ground directly; put it on the wooden rack.
Do not put it together with alkaline battery or other chemical stuff.
(c). No fire in the charging place and the battery should be far away from heat resource.
(d). Temperature of electrolyte can not exceed 45 ℃, otherwise take suitable measures to
decrease the temperature (make the charging current smaller, stop charging or put the battery
into water for cooling).
3. Charge criterion
Notes:
Make electrolyte by chemical pure sulfuric acid and distilled water, and it is not allowed to use
industrial sulfuric acid and common water, because the impurity may cause battery discharge
automatically or the pole plate may be damaged.

Battery type Preliminary charging Supplementary charging
the first stage the second stage the first stage the second stage
Current Time Current Time Current Time Current Time

Page 1182