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In the Tubular Lead Acid Batteries system the energy output, the capacity delivered and the average voltage during discharge are reliant on the discharge current.
Functional capacity of Tubular Lead Acid Batteries is normally defined from a cell in terms of ampere hours or hours of discharge to the final voltage or 'knee' of the curve of discharge. Further to this point, there is availability of little capacity.
For each rate energy output is fundamental of output of cell power (amperes x volts) between time zero discharge and the time equivalent to the knee of the curve of discharge, or final voltage in the Tubular Lead Acid Batteries. When there is higher end voltage than the final voltage, the size of the Tubular Lead Acid Batteries cell becomes bigger, and the unused capacity turns into a capacity in reserve and can prolong cycle life.
Appropriate recharging from discharge to discharge is a significant key to gaining most favorable life from any Tubular Lead Acid Batteries.
There are certain rules for suitable charging and are applicable to all Tubular Lead Acid Batteries types.
- At the initiate of recharge the charge current can be whichever value that doesn't make an average voltage in cell in the string of battery larger than the gassing voltage in the Tubular Lead Acid Batteries.
- Until hundred percent of the earlier capacity of discharge has been back, and during the recharge the rate of ampere should be in control to continue the gassing voltage, or lesser, but to minimize charge time as near to the gassing voltage as feasible in the Tubular Lead Acid Batteries.
- Under the above voltage control in the Tubular Lead Acid Batteries, when hundred percent of the capacity that is discharged has been back, the rate of charge will have usually decayed to the "finishing" rate of the charge.
In common field application in the industry, the methods of charging are numbers 4 charging, 6 charging and 7 charging for Tubular Lead Acid Batteries.
Charging method number 4 of Tubular Lead Acid Batteries can be seen in vehicles on-the-road, telephone, utility, and applications of uninterruptible system of power.
Number 6 charging of Tubular Lead Acid Batteries is general for batteries of deep cycling for material handling fork lift trucks.
Number 7 Charging methods of Tubular Lead Acid Batteries is a variation of 6 charging methods to cut cost of equipment. The original rate is restricted, but the current and voltage taper is such that at 25°C the 2.39 volts per cell is crossed earlier to the discharge ampere hours 100 percent return.
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