Use, Maintenance And Charging Of Storage Battery - Hyundai 12ESH Operation Manual

5.3.3 If any personnel is pushed against a wall or other object when the truck travels forward, you only need to press
the emergency reverse button on top of operation handle, then the truck will travel reversely automatically to prevent
damage to human body.
5.4 After use:
Park the truck at a fixed parking position after use, and conduct routine maintenance according to item 6. charge the
truck.

6. Use, Maintenance and Charging of Storage Battery

Charging method: this truck is equipped with fixed charger, and built-in charger is optional. When you use a fixed
charger, first open the side door, pull the charging connector out of the truck, and insert the charging connector into
the connector of fixed charger, then insert the plug of fixed charger into two-phase AC power, and charging will start
in a few seconds. When you use a built-in charger, take the charging plug out of the hole, insert the charging plug into
two-phase AC power, and charging will start in a few seconds.
Warning
When charging, hydrogen is accumulated inside the battery box, therefore the
charging environment should be well-ventilated. No open flame is allowed;
otherwise it will lead to explosion or fire disaster.
6.1 Initial charge
6.1.1 Initial charge shall be made for new batteries, i.e. the first-time charge. Clean up the surface of the battery
before the initial charge, and then check for damage to ensure reliable connection.
6.1.2 Open gas cap.
6.1.3 When the charging equipment is able to work normally, pour the sulfuric acid electrolyte with a density of
1.260±0.005 (25℃) and a temperature of lower than 30℃ into the batteries. The electrolyte level should be
15-25mm higher than the protective board. In order to reduce the temperature rise caused by chemical reaction
of the electrolyte and let the electrolyte fully penetrates into the pores of the polar plates and the baffles, the
batteries should be placed still for 3-4 hours, not exceeding 8 hours. The initial charge can only be conducted when
the electrolyte temperature reduces to below 35℃. (When necessary, the batteries can be put into cold water
groove for temperature reduction). After the still placement, if the electrolyte level reduces, electrolyte should be
added.
6.1.4 The sulfuric acid electrolyte is prepared with battery sulfuric acid complying with the state standard
GB4554-84 and distilled water. Never replace it by industrial sulfuric acid or running water. The standard
temperature (25℃) and density of the electrolyte can be converted as follows:
D25 = Dt+ 0.0007 (t-25)
Where: D25: the density of the electrolyte at 25℃
Dt : the actual density of the electrolyte at t ℃.
t : temperature of the electrolyte when testing the density.
6.1.5 Dry up the electrolyte spilled on the surface of battery. Connect the positive and negative poles of battery
with those of DC power (charger) respectively and the power will be turned on. Charge with the current of 30A
(the current of the first stage). After the charge voltage achieves 28.8V (12×2.4V=28.8V), switch to the 15A current
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