Lead Calcium Battery Discharge Curve

Kcr lead calcium kar lead antimony for switchgear and control applications capacities from 200 to 825 ampere hours h l w features benefits electrical testing to 100 capacity on every battery string prior to shipping assures performance of every battery string upon delivery long life positive plates cast with a proprietary process and.

Lead calcium battery discharge curve.

Chemical reaction when a battery is being discharged. While voltage based soc works reasonably well for a lead acid battery that has rested the flat discharge curve of nickel and lithium based batteries renders the voltage method impracticable. At the negative plate sponge lead pb is converted to lead sulfate pbso 4. When the battery is discharged water is produced diluting the acid and reducing its specific gravity.

Constant current discharge curves for a 550 ah lead acid battery at different discharge rates with a limiting voltage of 1 85v per cell mack 1979. During the discharge portion of the reaction lead dioxide pbo 2 is converted into lead sulfate pbso 4 at the positive plate. Battery failure rates as defined by a loss of capacity and the corrosion of the positive plates increase with the number of discharge cycles and the depth of discharge. Figure 3 lifetime curves temperature discharge cycles.

Because of the use of lead calcium alloy for the electrode in lead calcium batteries they have a low self discharging effect and a longer service life than the lead. Relationship between battery capacity temperature and lifetime for a deep cycle battery. Soc points will vary from battery type to battery type the shape and relationship of the curves is similar for all deep cycle. Batteries lead calcium cells and rv deep cycle batteries will have different charge discharge curves.

Depth of discharge is a very important calculation you should make when choosing the size of a deep cycle battery. The negative electrode the cathode is made from pure lead and both electrodes are immersed in sulphuric acid. The discharge voltage curves of li manganese li phosphate and nmc are very flat and 80 percent of the stored energy remains in the flat voltage profile. This causes the sulfuric acid 2h 2so 4 in the electrolyte to be consumed.

Depth of discharge also known as dod shouldn t be any more than 50 in most deep cycle batteries in order to get the best value for money. Antimony alloy with lead iv oxide pressed into it although batteries designed for maximum life use a lead calcium alloy. Longer discharge times give higher battery capacities. While specific voltage vs.

Lead acid batterieshaving lead calcium grid structures are particularly susceptible to aging due to repeated cycling.