Lc-p1224st Panasonic 12v24ah battery

brand:	Panasonic / Panasonic
model:	lc-p1224st
Product Certification:	CE
chemical type:	lead acid battery
appearance size:	165 * 125 * 175 mm
state of charge:	maintenance free battery
rated voltage Capacity:	12v24ah
scope of application:	UPS battery
voltage:	12 (V)
type:	energy storage battery
battery cover and exhaust bolt structure:	valve controlled closed battery
external size:	165 * 125 * 175 (mm)

  (1) Panasonic battery principle
The principle of battery is to convert chemical energy and DC energy into each other, and recover after charging after discharge, so as to achieve the effect of reuse

(2) Panasonic battery temperature and capacity
When the battery temperature decreases, its capacity will also be significantly reduced for the following reasons

(A) The electrolyte is not easy to diffuse, and the chemical reaction rate of bipolar active substances slows down

(B) When the impedance of electrolyte increases, the battery voltage decreases, and the 5hr capacity of battery decreases with the decrease of battery temperature

(3) The use time in winter is shorter than that in summer

(2) especially for the storage battery used in the freezer, the actual use time of a day is significantly shortened due to the large discharge

If you want to extend the service time, you should first increase the temperature in winter or before entering the freezer

(4)
discharge capacity and service life
When charging and discharging repeatedly every day for use, the battery life will be affected by the depth of discharge
　　
  (5) Discharge capacity and specific gravity of Panasonic battery
The specific gravity of the electrolyte of the battery is almost proportional to the discharge
Therefore, according to the ratio when the battery is fully discharged , The discharge capacity of the battery can be calculated by the weight and the specific gravity at 10% discharge

Measuring the specific gravity of electrolyte of lead-acid battery is the best way to know the discharge capacity
Therefore, the specific gravity after use shall be measured regularly to avoid excessive discharge
While measuring the specific gravity, the specific gravity converted by the temperature of side electrolyte at 20 ° C shall not be reduced below the value of 80% discharge

(6)
discharge state and internal impedance
The internal impedance will increase due to the increase of discharge capacity, especially at the end of discharge
The main reason is that the internal impedance will increase due to the decrease of the proportion of lead sulfate and electrolyte, which are the bad conductors generating current in the electrode plate
Therefore, after discharge, be sure to charge immediately
If it is allowed to discharge continuously, lead sulfate will form stable white crystals (this is the vulcanization phenomenon mentioned in the literature)
Even if charged, the active material of the electrode plate cannot be restored to its original state, which will shorten the service life of the battery

(7)
temperature in discharge
When the battery is over discharged, the internal impedance will increase significantly, so the battery temperature will also rise
The high temperature during discharge will increase the temperature at the completion of charging
Therefore, it is ideal to control the temperature at the end of discharge below 40 ℃