 |
Site Map | Contact us | Chinese | Sacred Sun | Русский |
|
Site Map | Contact us | Chinese | Sacred Sun | Русский |
Standard/Approval
MSDS
Connection and Protection Document for Ventilation in Packing Standard 
FAQ Flow Chart FAQ
How to confirm the floating voltage of battery?
A: When floating use VRLA battery, the charge voltage must keep invariableness, and the input electricity should be enough to compensate the loss due to self-discharge and the demand of oxygen cycle. Furthermore the battery will be sure that is full capacity in comparative short time, which has been discharged, thus the battery can keep full capacity in a long period. Meanwhile choice of this voltage should reduce the damage caused by overcharge to minimum.
Confirmation of the floating voltage is related with electrolyte density. Normally the floating voltage of ABT Enduro series is 2.24-2.28 VpC, for Powerline and Thunder both are2.25-2.29 VpC .
When uniform charge needed for VRLA battery?
A: Normally VRLA battery need not to be uniform charged in time ,which is different from flooded battery, because VRLA battery does not exist stratification of electrolyte after a period running like flooded battery. Even stratification of electrolyte happened,a period of uniform charge can do nothing but speed up the loss of limited electrolyte. But the battery can be uniform charged for a period with ascending voltage when in below situations:
1、The place where battery applied is out of electricity, so the battery need discharge frequently.
2、There is failed battery which voltage is less than 2.18V in the group.
What is the relationship between temperature and floating voltage?
A：Floating voltage should compensate accordingly with change of temperature. To be strict, during the process of operating, when temperature rise 1℃, the floating voltage should fall 3.5mV/pc accordingly and vice versa.
A: It means how many cyclic times that VRLA battery could charge and discharge. Generally one charge-discharge is regarded as one cycle. Cyclic service life is one of the most important indexes of VRLA battery.
Does over-charge have impact on the battery service life?
A: After charging according to prescriptive period, if we still charge with voltage which exceed the floating voltage will cause overcharge. And overcharge will cause additional water loss and accelerated corrosion of grid. More serious overcharge will make cases bulged and lose control of caloric, finally the service life reduced.
A gel battery design is typically a modification of the standard lead acid automotive or marine battery. A gelling agent is added to the electrolyte to reduce movement inside the battery case. Many gel batteries also use one way valves in place of open vents, this helps the normal internal gasses to recombine back into water in the battery, reducing gassing. "Gel Cell" batteries are non-spillable even if they are broken. Gel cells must be charged at a lower voltage (C/20) than flooded or AGM to prevent excess gas from damaging the cells. Fast charging them on a conventional automotive charger may be permanently damage a Gel Battery.
What is sulphatization of battery?
A: Sulphatization shaped when sulfuration lead deposit on the plate surface and pores of active material. If there are much more sulfuration lead or big crystals have been shaped, battery can't work effectively. There are two reasons may cause sulphatizaion: I. Always overcharge. II: There is no charge in a long period after discharge.
A:The service design life of a battery are vary considerably with how it is used, how it is maintained and charged, temperature, and other factors.
Do batteries self-discharge when not in use?
A:All batteries, regardless of their chemistry, self-discharge. The rate of self-discharge depends both on the type of battery and the storage temperature the batteries are exposed to. However, for a good estimate, Narada batteries self-discharge approximately 4% per week at 80ĄăF.
How can I evaluate the health and charge state of a battery?
A:Routine battery examinations divulge irregularities in the charging system as well as in the batteries. The principle method is to examine the electrochemistry of the battery through hydrometric electrolyte inspection. As previously discussed, this important examination cannot be accomplished with sealed absorption or gel batteries. Voltage readings alone require experience to interpret. Hydrometric readings will uncover early warnings of overcharging or overdischarging before batteries are damaged. The state-of-charge and reliability of a lead acid battery can best be determined by the specific gravity of the electrolyte measured directly with a common bulb-type hydrometer with a glass float. We do not recommend the ball float type hydrometer. Specific gravity is a unit of measurement for determining the sulfuric acid content of the electrolyte. The recommended fully charged specific gravity of marine batteries is 1.255 to 1.265 taken at 80ĄăC More than .025 spread in readings between fully charged cells indicates that the battery may need an equalization charge. If this condition persists, the cell is failing and the battery should be replaced. Since water has a value of 1.000, electrolyte with a specific gravity of 1.260 means it is 1.260 times heavier than pure water while pure concentrated sulfuric acid has a specific gravity of 1.835.
Do I need to add water to my battery?
A:No. Sealed lead acid batteries do not require the use of water.
What determines the life of an VRLA battery?
A:Sealed lead acid battery life is determined by many factors. These include temperature, depth and rate of discharge, and the number of charges and discharges(called cycles).
What is the difference between float and cycle applications?
A:A float application requires the battery to be on constant charge with an occasional discharge. Cycle applications charge and discharge the battery on a regular basis.
There are specific directives for storage of batteries and equipment in areas with very low temperature. The Temperature can be -50C. If EFHP series battery can be used in such low temperature.
A:When the temperature is -50°C, only 30% rated capacity will be given out.If once in a while the temperature is -50°,it is OK, but if the time is longer, for example one month, not suitable for charge and it will worsen discharge capability .
For front terminal battery , generally it is put in the cabinet, if the cabinet have the function to modify the temperature to be above 0°C, The battery's life will be greatly improved.
