Lead Acid
Type:UPS battery Voltage:12v Capacity:12AH Terminal type:Lead Bolt Color:black and other Design Life:5-7 years Warranty:1 year Usage:UPS Sealed Type:Sealed Maintenance Type:Free
The sealed maintenance-free battery uses the latest fully-sealed structure of the 1990s and modern production technology. It has excellent performance of high performance, long life, pollution-free, maintenance-free, safe and reliable.
* Strong charge and discharge capacity
* High safety and reliability, equipped with automatic safety valve
* long lasting
* Extremely low self-discharge rate
* Good conductivity
* Good directivity
* Environment-friendly
* Longer life and deeper cycle
* Maintenance-free operation
* Small internal resistance
* Sealed construction and leakproof
Due to its structural advantages, the maintenance-free battery consumes very little electrolyte, and basically does not need to replenish distilled water during its service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of ordinary batteries. There are also two types of maintenance-free batteries on the market: the first type requires no maintenance after the electrolyte is added at the time of purchase (replenishment); the other is that the battery itself has been filled with electrolyte and sealed when it leaves the factory , Users can not add replenishment at all.
Because the maintenance-free battery uses a lead-calcium alloy grid, the amount of water generated during charging is low, and the amount of water evaporated is low. In addition, the sealed structure of the casing also releases little sulfuric acid gas. Therefore, it is compared with traditional batteries. It has the advantages of no need to add any liquid, less corrosion to the terminal and wire, strong resistance to overcharge, large starting current, long storage time, etc.
Maintenance-free batteries, due to the normal charging voltage, only a small amount of gas is generated from the electrolyte, the electrode plate has a strong resistance to overcharge, and has a small internal resistance, good low-temperature starting performance, longer life than conventional batteries, etc. Therefore, it is not necessary to add distilled water during the entire use period, and under normal circumstances of the charging system, it is not necessary to remove it for recharging. However, the specific gravity of the electrolyte should be checked during maintenance.
Most maintenance-free batteries have a hole-shaped liquid (temperature-compensated) hydrometer on the cover, which changes color based on changes in the specific gravity of the electrolyte. It can indicate the storage state of the battery and the height of the electrolyte level. When the indicator eye of the hydrometer is green, it indicates that the battery is fully charged, and the battery is normal; when the indicator eye has few green dots or black, it indicates that the battery needs to be charged; when the indicator eye is light yellow, it indicates that the battery has an internal fault and needs repair or Replace it.
When possible, the maintenance-free battery can be charged with charging equipment with current-voltage characteristics. This device can guarantee sufficient power and avoid overcharging and consume more water.