What are the differences between lithium battery chargers and lead-acid battery chargers?

1. Lithium battery charger Lithium battery charger is a charger specially used to charge lithium batteries. Lithium batteries have higher requirements for chargers and need to protect circuits. Therefore, lithium battery chargers usually have higher control precision and can charge lithium batteries with constant current and voltage. Lithium batteries have a high energy-to-weight ratio and energy-to-volume ratio, no memory effect, can be recharged many times, have a long service life, and have a lower price. These characteristics of lithium batteries have promoted the development of portable products in a smaller and lighter direction, making more and more products using single-cell lithium batteries for power supply. Lithium battery charger products are widely used in military industry, scientific research, resource exploration, medical equipment, ultrasonic flaw detection equipment, video cameras, digital communications, digital electronics, solar power stations, wireless walkie-talkies and personal computers and other portable electronic equipment power supplies. Lithium battery charging control is to charge according to the stable current first, and then when the battery voltage rises to 4.2V, the voltage does not rise again, the charger tests the current, assuming that the current is less than a certain value, the charging is completed. Lithium batteries are active against overcharging, so the protection circuit is messy. The highest charging rated voltage for a single battery with a nominal 3.6V is 4.2V, and the upper limit of the allowed fault is not more than 1%. Lithium batteries need to use a matching charger when charging. Because the original materials of the battery and the processing technology of the lithium battery are different, the technical requirements for the charger are different, so only a special charger is needed to charge the lithium battery to make the life of the lithium battery longer Long, and prevent safety hazards. 2. Lead-acid battery charger The lead-acid battery charger adopts three-stage charging, which has excellent quality, good performance, high charging saturation, and can improve the service life of the battery. The lead-acid battery charger has a wide range of charging voltage and battery capacity, the battery is saturated to prevent overcharge, automatic short-circuit protection, high safety factor, low heat, high efficiency, and no damage to the battery. Lead-acid battery charger is not afraid of short circuit and wrong connection, short circuit, overload, over current, automatic reverse connection protection, high safety factor, low thermal efficiency. Adequately protect the normal use of the battery, and will not be damaged due to the quality of the charger. In fact, in order to overcome the large internal resistance of lead-acid battery chargers, the charging voltage is increased by about 5% during constant current charging. That is to say, when you use the same voltage charger to power the lithium battery, the voltage It will be a little higher because the internal resistance of lead-acid is large. In order to achieve efficiency, constant current charging increases the constant voltage voltage at constant current, which is very unfavorable for lithium batteries. Lithium battery chargers and lead-acid batteries cannot be used in common use, and lead-acid batteries cannot be used to charge lithium batteries because lithium batteries have higher safety requirements. Lithium batteries are sensitive to overcharge, so the protection circuit is complicated. For a single cell with a nominal 3.6V battery, the highest charging rated voltage is 4.2V, and the allowable upper limit of error is not more than 1%. The ideal charging current for lead-acid batteries is pulsed, and pulsed charging is best with the direct rectification and unfiltered pulsating DC charging of the mains 50-60HZ power supply we use. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.