Working Principle of Yuasa Battery

The charging and discharging reactions of non-sealed batteries can be expressed by the following equation:

When the charging process is completed, if the charge is continued, it will be called overcharge, which will lead to the ionization of water in the electrolyte, 02 on the anode and H2 on the cathode. These gases are released outside the battery, causing the electrolyte level to drop. Therefore, the battery must be regularly replenished at regular intervals.
Sealed lead-acid batteries are designed in such a way that the cathode is not fully charged even when the anode is fully charged. In this way, although 0:is generated on the anode plate due to overcharging, no H2 is produced on the cathode plate. Thus, the 0:generated on the anode plate reacts with the charged spongy electrode to produce lead oxide (PbO). Lead oxide then reacts with sulfuric acid (H, rib 4) to produce lead sulfate (Pbs04), which causes the cathode plate to discharge. In other words, the o produced on the anode is absorbed by the Lang plate and does not overlap. Because the cathode plate produces effective electricity under the action of 02, there always exists a part which is not affected by discharge. As a result, H 2 will never be produced on the cathode newspaper board. This completely avoids the loss of water. Sealed maintenance-free batteries are widely used in uPs power supply because the reaction is totally different from that of open batteries, so it is not necessary to observe them regularly. Regular water addition also purifies the environment and avoids the risk of combustion of selected O2 and H Z.
The working principle of sealed batteries can be expressed by the following reactions: