STANDHBS VRLA Battery Performances

Non-spillable
With use of an absorbed electrolyte technology, electrolyte is absorbed to the positive plates & negative plates, and the separators, coupled with the use of special sealing epoxies, and long sealing paths for posts, Stand Power VRLA batteries have exceptional leak resistance, which ensures batteries could be operated in a wide range of applications.

Explosion Proof
With advanced safety valve system and special filter, Stand Power's batteries could prevent the chance of battery explosion and ensure complete safety in normal use.

Sealed and Maintenance-free Operation
There is no corrosive gas generation during normal use and no need to check the specific gravity of the electrolyte or additional water adding during battery's service life.

High Quality and High Reliability
Stand Power's VRLA battery has stable and reliable capacity. The battery can withstand overcharge, over discharge, vibration, and shock. To assure this high quality and reliability, the batteries are 100% tested on production line for voltage, capacity, sealing condition and the safety valve are 100% visually inspected before the final assembly process.

Exceptional Deep Discharge Recovery Performance
With use of high density manufacturing materials and technology, Stand Power's VRLA batteries have exceptional deep discharge recovery and charge acceptance, even after deep or prolonged discharge.

Low Self-discharge
With the advantages of lead calcium grids alloy and high purity materials, Stand Power's VRLA batteries could be stored for a certain long periods of time without recharge.

ABS Containers and Covers
With use of case resin both UL94HB and UL94V-0 containers and covers, high-impact and fire resistance performance could be adopted with most Stand Power's range of products.

Flexibility Design
Stand Power's batteries could be used in series and/or parallel to give wide range of voltages and capacities for variety of applications.

Characteristics

Discharging

• End Discharge Voltage
  To maintain discharging safely and maximize battery life, ending discharge voltage MUST NOT LESS THAN the data showed in Figure below.

• Battery Discharging Characteristics:
  The discharging capacity of battery is depended on the discharge rate being used and ambient temperature, battery output capacity is reduced when it is discharged at a higher current. At a higher temperature, the capacity of battery increases and conversely at a lower temperature, the capacity of battery decreases.

Charging

• Charging Method:
  Correct charging is one of the most important factor in consideration of using valve regulated lead acid batteries. Battery performance and service life will be directly affected by the charging methods.
  
  RECOMMENDED method of charging is Constant Voltage charging. It is necessary to precisely control of actual voltage in order to ensure that it is within the limits advised.
  
  Standby service: 2.25-2.30 vpc at 25^oC/77^oF
  Cycle service: 2.35-2.45 vpc at 25^oC/77^oF
  
  It is suggested that the initial current be set within 0.3CAmps.
  NOTE: It is necessary to ensure that the voltage is correctly set. The charging voltage set too high will increase the corrosion of the positive plates causing loss of capacity and ultimately shorten the life of the battery.

• Effect of Temperature on Charging Voltage
  As temperature rises, electrochemical activity in the battery increases. Similarly, as temperature falls, electrochemical activity decreases. Therefore, as temperature rises, charging voltage should be reduced to prevent overcharge, as temperature falls, charging voltage should be increase to avoid undercharge. To optimize service life, use of a temperature compensated charger is recommended. The recommend compensation factor for Stand Power VRLA batteries is +-3mV/^oC Cell (standby use) and +-4mV/^oC cell (cyclic use). The standard center point for temperature compensation is 20^oC/68^oF.

Battery Storage

General Storage Conditions:
The battery should be stored under the following conditions.

• Low humidity
• 5 to 104^oF(-15 to 40^oC)
• Clean, dry and avoid direct sunlight.

Handling Precautions

• Never charge the battery in a sealed container.
• Never disassemble the battery.
• Never short-circuit battery terminals.
• Never incinerate batteries, for they may explode.
• Do not press and/or bend the terminals, or overheat them.
• Do not install old and new batteries together, neither use batteries of different types.
• Do not dispose of with household waste.
• Use the specified charger for battery, and follow the charging instructions correctly.
• Charge the batteries between the temperatures 0^oC/32^oF to 45^oC/113^oF.
  Position batteries securely, protecting them from abnormal shocks or vibration.
• Keep sufficient space (10mm minimum) between batteries for ventilation.
• Install batteries in a cool and well ventilated place.
• The ambient temperature must remain between -20^oC/4^oF to 40^oC/104^oF in storage time.
• Recharge the batteries at least every 6 months during storage.