The post elaborately explains 3 automatic intelligent single chip CC/CV or constant current, constant voltage 3.7V Li-Ion battery charger circuits, using IC TP4056, IC LP2951, IC LM3622, with battery temperature sensing and termination facility. Design#1 CIRCUIT DESCRIPTION The first design is probably the smartest one, incorporating the IC TP4056 which is a comprehensive constant-current (CC), […]
Battery Cut off Switch Diagrams
In this page you will come across more than 100 well researched 6V, 12V, and 24V, 48V automatic battery charger circuits that will operate in a technically correct manner and ensure a safe and optimal charging of your battery.
A battery charger is actually an equipment accustomed to supply electric power into a supplementary cell or rechargeable battery pack by pressuring an electric current into it.
Better Expertise only in this Site
In other websites you may find many related posts but unfortunately most of them could be technically incorrect and the authors have little or no expertise to verify the details for you or answer to your specific queries.
Here I have presented more than 100 thoroughly researched charger controller concepts which promise not only the most ideal way of charging your battery but are also equipped to implement the same with utmost care and safety.
There are plenty of choices you can get while designing your own charging systems as per your specific needs and battery ratings.
Before building a circuit it would be important for you learn some basics of battery charging.
Remember many people may advise many critical things, which might scare you regarding batteries and their charging concepts. These facts may be misinterpreted, and therefore dangerous or a misinformation!!
Below given facts will help you to get rid of the many misconceptions and get a proper idea regarding charging of any battery for that matter.
- Basically, batteries can be compared to our body, they do not like working under stressful conditions. That's the most fundamental thing you must remember while charging a battery.
- Second fact is that, batteries don't like getting overcharged.
- The third fact is batteries do not like warm conditions, so just make sure your battery stays cool while it's getting charged.
However, if you try to keep the battery temperature lower, the charging rate might need to be lower too, making the process slower, and vice versa. Although this may be a downside, the good thing is that lower current rates will always ensure a long life for your battery, and therefore an increased number of charge/discharge cycles.
Difference Between Lead Acid and Li-Ion/Lipo Batteries
As far charging criticalities are concerned, the above conditions remain the same for both these counterparts.
However Li-ion and Lipo batteries are designed to get charged much quickly than lead acid batteries, through a higher charging rate. But that doesn't mean these won't accept charging at lower currents.
Lower current charging is the recommended method if you are OK with the excess delay in the charging time.
If you are not OK, and want your battery to get charged quickly, in that case you may require special chargers having temperature compensation. Or if you are not using a special charger just make sure to include a fan cooling for the battery. That's all!
A Couple of In Depth Technical aspects
There are a couple of technical things which must be strictly followed before designing a battery charger:
1) The Charging Voltage
2) The Charging Current.
As a rule of thumb, ensure that your battery is never allowed to be charged further, once it reaches its full charge value.
Do not charge your battery with higher currents above its optimal rating. Keeping the charging current on the lower side will always be beneficial to any battery.
To maintain the above conditions, simply make sure your charger includes an overcharge cut off, and a current controlled input power supply.
For Lead Acid batteries the optimal charging current rate can be around 0.1C or 1/10th of its Ah value, and for Li-ion it may be 0.5C or 5/10 its Ah rating.
For more detailed information regarding the various types of automatic and semi-automatic battery chargers or tutorials, you may select the one as per your requirement from the below given list:
In this article we will try to build an automatic battery charger circuit using dump capacitor concept for self detecting and charging a multiple set of batteries. The idea was requested by Mr. Michael. Circuit Objectives and Requirements My name is Michael and live in Belgium. I found your site thru google during my search […]
A simple cell phone charger with timer circuit is presented in the following article, which could be used for charging a given Mobile phone for a specified predetermined length of time. The idea was requested by Mr. Saad. Circuit Objectives and Requirements Could you design me this charger circuit ? Input 230V 60 Hz, and the […]
In this article we learn regarding how to design and make your own customized high current wireless battery charger circuit using wireless power transfer concept. Introduction In many of my earlier articles I have comprehensively discussed wireless power transfer, in this article we will go a step ahead and try to learn how to design […]
This universal automatic battery charger circuit is extremely versatile with its functioning and can be adapted for all types of battery charging and even for solar charge controller application. Universal Battery Charger Main Features A universal battery charger circuit must have the following main features included in it:1) Automatic battery full charge cut-off, and automatic […]
In this post, we are going to construct an Arduino based battery level indicator, where a series of 6 LEDs show the level of the battery. If you are interested in monitoring and maintenance of your 12V battery, this circuit might become handy. By: Arduino Guru Why Battery Level Monitoring is Crucial All batteries have […]