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GIT1 Tester https://www.e-moto.pl/pl/c/GIT1/308 A lead-acid battery, discharged to 1 volt, can be damaged for several reasons, which result from its construction and operating principles. Here are the main factors: 1. **Sulfation**: When the battery is discharged, the sulfuric acid in the electrolyte reacts with the lead to form lead sulfate (PbSO4) on the plates. Under normal charging conditions, this process is reversible. However, when the battery is deeply discharged (e.g. to 1 volt) and left in this state for a long time, lead sulfate can form hard and durable crystals. These difficult to dissolve crystals can physically damage the plates and block the flow of current, preventing the battery from charging properly in the future. 2. **Corrosion of the plates**: Prolonged discharge can also accelerate the corrosion process of the lead plates, especially in conditions where the battery is not regularly recharged. Corrosion can reduce the active surface area of the plates, which reduces the battery's ability to store energy. 3. **Mechanical damage**: Deep discharge can lead to deformation and cracking of the lead plates, especially if the battery is exposed to low temperatures. A discharged battery has less resistance to electrolyte freezing, which can lead to the expansion of ice crystals inside the battery and damage to its structure. 4. **Reduction in capacity**: Even if the battery is later charged, deep discharge can permanently reduce its capacity and efficiency. This means that it will not be able to store as much energy as it did before damage. 5. **Water content in the electrolyte**: In extreme cases, if the battery voltage drops below a certain level, an imbalance in the chemical composition of the electrolyte can occur, which further increases the risk of damage. To avoid these problems, it is recommended to regularly check the condition of the battery, maintain an appropriate charge level and avoid leaving the battery in a state of deep discharge for a long time. I invite you and best regards, Robert Mazurek Świat Akumulatorów Szczecin ul. Gryfińska 106 Online stores: www.mrOffGrid.pl Energy independence www.e-moto.pl Battery Store www.mrKapitan.pl Electrics for Campers Vlog of the company: / World of batteries Vlog english: / @thebatterychurch Robert Mazurek, creator of the channel @mrAkumulator and the company World of Batteries and the AKUBIZ portal as well as one of the first online battery stores in Europe www.e-moto.pl #varta #agm #szczecin #Gryfińska106 #Batteries #RobertMazurek #World of Batteries