Sealed Lead Acid (V.R.L.A)

  Usage instructions, Charge  and Keeping of VRLA Stationary Sealed Lead Acid Batteries :

 

   The above mentioned weights are with ± 25% tolerance.

 

 

 2-Sealed Acid Battery Discharge Curve:

 

 

 

 3-Available Capacity VS. Ambient Temperature:

 

 4-Floating Voltage VS. Ambient Temperature:

 The floating Voltage of the sealed acid battery in different temperatures is according to the following table.

 

 

Floating Temperature V -0.02  +0.02  V/Cell	Temperature Range  (C)
2.29	0-10
2.26	11-15
2.23	16-25
2.21	26-30
2.20	31-35
2.19	36-40

 

 

 5-Floating Charge:

 

Recharging should take place under these circumstances:

1-After installing the battery.

2-During maintenance charge after three months or when the voltage reaches 2.18 V/Cell .

3-During storage after three months. Recharging method: Use 2.35 – 2.40 V/Cell for 24 hours with a current of 0.1C10A with an ambient temperature of 20-30 C.

 

6- Charge:

 

 After each discharge batteries must be charged. Use the following instructions: Batteries use a current of 0.1C10A and a voltage of 2.35 – 2.40 V/Cell for each cell and according to the following curve with a duration of 18-24 hours. The current for a 100 Ah battery should not exceed 15A. Charging will take place up to 15V and the observed amperage for 15 volts should remain constant for two continuous hours.

 

components of sealed batteries:

- Positive Plates : Positive Plates are made with lead calcium alloy with special formula.

- Negative Plates: Negative Plates are made with lead calcium alloy with special formula.

- Seprator: AGM Seprator is made in a way that its porosity drain at its top makes enough electrolytes for reaction of active elements of plates.

- Safety relief valve: The valve is designed in a way that can emit extra gas from the battery and keeps the inner pressure at the safety level .

Unique Specifications of Sealed Batteries :

- No service and keeping required

- No Electrolyte leaking

- Long Life

- Usable in any position

- Low self discharge

- Lowest possible weight and volume

- Installable on equipments 

 

 Usage:

Long life and high capacity is one of sealed batteries main features.The usage of these batteries can be divided into 2 sections. 

volume:

the volume of a battery is the amount of electric power usable from a charged cell. The unit of capacity is ampere per hour and it is equal to the amount of ampere multiply by the the amount of discharge time.the amount of its capacity depends on discharge process,temperature while charging and its final discharge voltage.

Note: sealed batteries are made according to IEC60896-2 international standard and are generally tested.

keeping and storage:

the store place of the batteries should be clean,cool and must be a dry place away from any heating resources such as direct sunlight,radiators or stream pipes.

1-General circumstance of storing the batteries:

- Low humidity

- Temperatures of the storage must be in a range of (-15 to 55 ^.c )

- The storage place must be free from dust and direct sunlight

2-Capacity After a long Storage Time

After a long time storage , all batteries reach to their lowest capacity than their initial level. In the case of cycling usage after many carge and dischage cycles it is possible that the batteries reach their whole capacity. They usually reach the whole ccpacity after 2 or 3 cycles.

for keeping longer, the battery should be charged before storing. The amount of self dischage is approximately 3% at 25 ^.c per month and this process can be changed due to the environmental elements.  

Shelf Life	Temperature
12 Months	0-20  °C ( 32-68  °F )
9 Months	21-30°C (70-86 ° F )
6 Months	31-40 °C (88-104 ° F )
3 Months	41-50°C (108-122 ° F )

 

 Controlling Notes:

     
 1- Over heating reduces the battery service life, so to make batteries useful life longer,     keeping them in 20-25 Cْ is advised.

 

 2- As producing explosive gas in the storage area is possible, putting the batteries away from devices which produce sparks and good air conditioning is advised.
      
3- If the batteries are kept in a closed area, suitable air condition is recommended.

 

4 - In accordance to the material which is used in the battery shield don’t make it contact with solvent or any sticky stuffs.

5- The advisable temperature for usage of the battery is between -15 to 50 Cْ. If this range reduces to -5 to 35 Cْ the service life of the     battery becomes longer.
       
6- If any vibrations occurred in the battery storage, use shock-resistance device and fasten the batteries tightly for making the battery useful life longer.

7- While connecting the batteries put them in the open air. Approximate needed room between the batteries should be 5 to 10 millimeter.

8-While the batteries are connected in serial mode and the voltage is more than 100.V, for prevention of electric fall, pay close attention to the way they are connected and installed.

 

9 -If more than one group of batteries is used in a parallel connection, use section surface cables for a better connection.

10- Always clean the batteries with a piece of wet cloth and don’t use any greasy or solvate stuff such as benzene for cleaning

11 - Don’t separate batteries main pieces away from each other, in the case of contacting the battery electrolyte (Sulphuric Acid) with clothes or skin wash the contacted area immediately and use medical equipments.

12 - Don’t over heat the battery or make it close to direct flame.

 

13- While servicing or installing the battery use the glove rubber to avoid electric shock.

14 - Using different batteries with different volume side by side of each other makes them loss and can damage the batteries.