1. The difference between lithium battery charger and lead-acid battery charger
(1) Charging method: Li-ion battery charger mainly provides constant current and voltage to charge, while lead-acid battery charger provides constant voltage, so the charging efficiency of Li-ion battery charger is higher than that of lead-acid battery charger, and the charging speed is relatively faster.
(2) Safety: Lithium battery chargers have internal functions to prevent overcharging and overheating of lithium batteries, while lead-acid batteries have built-in thermal sensors inside to detect overheating.
(3) Portability: Li-ion battery chargers are lighter and smaller than lead-acid battery chargers, so Li-ion battery chargers are more portable;
(4) Cost benefits: lead-acid battery chargers are cheaper than lithium battery chargers, but lead-acid batteries have a shorter lifespan, lower efficiency, and high maintenance expenses in the later stages. In the long run, the cost benefits of lithium batteries are higher.
2. The working principle of the battery charger
Lead-acid battery charger mainly includes constant current stage, constant voltage stage and float stage during charging. When the battery begins to charge, the first long time to provide a lower voltage, so that the voltage increases, when the voltage increases to a certain value, the charger output constant voltage, at this time the current is constantly decreasing, and finally the float stage prevents the battery from being overcharged, and can last a long time.
The lithium battery charger is divided into two stages when charging: fast charging stage and pulse stage. When the battery voltage reaches a certain value or the charging time exceeds a predetermined value, it will enter the pulse stage from the fast-charging stage. In the pulse stage, the charger will often detect the battery voltage to prevent the battery voltage from being too large or too small.
3. Whether lithium battery and lead-acid battery chargers can be interchanged
No. Lead-acid batteries and lithium batteries have different charging methods and charging voltages. The charging voltage of lithium batteries is generally 3.5~4.0V, while the charging voltage of lead-acid batteries is generally 2.0~2.5V.
Therefore, if you use a lead-acid battery charger to charge lithium batteries, it is likely to lead to overcharging, which may cause lithium batteries to explode and catch fire due to overcharging. Similarly, using a lithium battery charger to charge a lead-acid battery will lead to undercharging of the lead-acid battery, which may reduce the performance of the lead-acid battery and shorten its service life.
4. How to choose the right charger?
(1) Battery type: If you are using lead-acid batteries, choose a lead-acid battery charger and select the standard charger for the battery.
(2) Power supply voltage: to ensure that the battery is properly charged and not damaged, choose the right charger according to the size of the power supply voltage.
(3) Ambient temperature: some chargers have specific operating temperatures, only to meet its operating temperature, it can charge the battery with maximum efficiency, otherwise it may cause great harm to the battery;
(4) Durability: If the charger is not durable, you will need to replace the charger frequently, which will increase the expenses.
(5) Cost: Cost is a special concern for most people when purchasing a charger. Certain chargers have a low cost at the time of purchase, but the cost of maintenance may be very high. So, it is important to combine the overall cost benefits while purchasing a charger to make a choice.
Conclusion
In conclusion, different chargers bring different charging results. When charging a battery, we should be careful not to use the charger casually so as not to cause harm to the battery.
