battery is not often used, a balanced charging (an amount over charge) every month is
necessary.
6.3.2 Compound electrolyte
(1) The electrolyte of battery must be compounded with sulphuric acid and distilled
water or deionizer water according to GB4554 standard. The density of electrolyte is
1.280-1.290g/cm
3
(25℃)
▲Temperature conversion of density
The density of electrolyte is changed with temperature, the relation is counted as
follow formula: D 25=D t＋0.0007 (t－25)
D25—the density of electrolyte (g/cm
3
) at standard temperature (25℃).
D t—The real density (g/cm
3
) when the temperature is t.
0.0007—Exchange factor of temperature
t—The temperature of electrolyte when measuring density.
(2) Compound the electrolyte with ceramics cylinder which is anti-acid, anti-heat,
without iron, or other anti-acid containers. When compounding the electrolyte, first put
measured distilled water or deionizer water in clean container, then put measured thick
sulphuric acid into water, at last mix them with vitriol stick.
Note: Don’t put water into thick sulphuric acid against spattering and causing
injury.
6.3.3 Perfusing electrolyte
(1) After assembling the battery, twist pore plug and pour the electrolyte cooled down
to 30℃ into the battery, which will be absorbed by pole plates, add electrolyte to 15-20mm
upper the plate in time.
(2) After perfusing the electrolyte, the temperature of the battery will raise. Charge
the battery after the fluid cooling down to 35℃ about 4-8 hours later.
Note: Normally, the electrolyte in the battery has been compounded, so it’s not
necessary to add again. The electrolyte only can be added and compounded
according to the need when the professional repairs the battery.
6.3.4 Measure density of electrolyte
The density of electrolyte is changed with the temperature. When measuring the
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