Battery Trouble Shooting

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Battery Trouble Shooting

Battery Trouble Symptoms Remedies
Over Charging (a) Excessive gas sing
(b) Falling of active materials from positive plates
(c) Buckling of plates
(d) Increased temperature
(e) Building of container
(1) Reduce the charging rate till the
specific gravity attains value 1.2
(2) Add distilled water
Under Charging (a) Low specific gravity
(b) Lighter colour of plates
(c) Reversal of cell voltage
(d) Buckling of plates
(e) Oxidation of battery links
Increase the charging rate till the specific gravity attains value 1.2
Remove & clean in warm water
Loss of Capacity Abnormal drop of voltage during a
normal discharge without corresponding rise in temperature due to
(a) Clogging of the pores of the lead
sponge impurities
(b) Contraction of the pores of the mass
(c) Loss of active material from grid
(d) Formation of Sulphate
(e) Loss of electrolyte
Contact manufacturer
(Needs Special treatment)
Corrosion of Plates Impure Electrolyte (a) Remove Electrolyte
(b) Flush with distilled water
(c) Refill with pure electrolyte
Fracture & Buckling of Plates (a) Excess or unequal expansion
(b) Discharge carried too far
(c) Discharge at too rapid rate
(d) Unequal distribution of current
over plates
(e) Defective plates
(f) Plates exposed to direct Sun
(g) Direct discharge
(1) Reduce the charge rate
(2) Replace the detective plated
Shedding of active Material (a) Over Charging of Plates
(b) Charging done at high rate
(c) Defective material
(d) Material impropriet applied on plates
Charging & Discharging limits should be maintained to 2.4 & 1.8 Volts respective and 1.22 to 1.30 sp. Gra. limits
Excessive Sulphation Lighter colour of plates all over or in spots due to
(a) Under charging
(b) Too stronger/to weak acid
(c) Over discharge
(d) Short Circuit
(e) Too rapid discharge
(f) Local Action
(g) Plates exposed to air on account of evaporation of electrolyte
(1) Sulphation at intialstage can be cured by low rate repeated charging & Discharging
(2) Sulphation at advanced stage contact manufacturer of special treatment
Reversal of Negative Plates When an undercharged or weak cell is in series with good ones, its discharge is ended before the others, which overpowers the defective cell & reverse it. Use pure electrolyte & keep please well covered
Internal discharger Local action (a) Perceptible gassing even when battery is idle
(b) Abnormal gassing during charge
(c) Reduction of capacity, due to
decomposition of electrolyte, due to
metallic impurity or the grid being
in contact with the active material
& forming a local voltaic couple.
Use pure electrolyte & keep please well covered

Battery Trouble Shooting

Hardening Negatives in air Oxidation & heating in air (1) Cover the plates properly exposed Plates with distilled water
(2) Continue overcharge at low rate
Loss of voltage Excessive sulphation at intial stage can be cured by low rate repeated charging & discharging Sulphation at advance stage Contact manufacturer for special treatment
Short circuits (a) Low Specific gravity
(b) Rapid loss of capacity after charge
(c) Low open circuit voltage due to buckling lodging of some conducting material between plates & around.
(1) Remove short & use new separators



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