#Eltek Smart Pack Driver Offline

#Eltek Smart Pack Driver Offline

The first thing that comes to our mind while planning toД¬onstruct such charger is how can I get high current step-down transformer likeДЎ0A or 15A which is not only very difficult to find one, but also veryДЇortunately, we no need to find a 10A transformer we can getДЄ 24V 10A SMPS from online and offline markets, which is very efficient and loaded Specifications / Mains Voltage Step down: Now you know, at what current and voltage the battery need toД«e charged for any capacity of lead-acid battery, you know when to cut-off theД«attery from the charger and you also have a crude idea how long it takes to You should always measure the current to determine whether You may use this formula: Charging current = 0.1 x Ah.ДЄssuming the battery is discharged (not over discharged) you If you have 200Ah battery you can charge at 20A. If you are not sure at what current the battery needs to beД¬harged, you can confidently apply charging current of 10% of battery capacity.Д¬harging the battery at 10% of battery capacity is recommended by many batteryДЇor example: If you have 100Ah battery you can charge it atДЎ0A. However charging the battery less than specifiedД¬urrent will not harm the battery but it will take longer to attain fullД¬harging current for lead acid batteries can be from 10% toДў5% of the capacity. It is the current that indicates the state of charge.Д¬harging current for any lead acid battery must be as per NOTE: By measuring voltage alone will not tell us whether the battery is fully charged or not. Charging beyond this could damage the battery. A 200Ah battery need to be cut-off when charging current The charging current reaches 3% of the battery capacity (Ah).ДЇor example, a 100Ah battery need to be cut-off when chargingД¬urrent reduced to 3A.

The battery need to be completely cut-off from charger or it should Trickle charging is done by applying current equal to Remaining 30% of the battery is charged inД¬onstant current to constant voltage stage occurs naturally. This stage isД¬alled constant voltage charging. At a point (14.4V) after which the voltage isД¬onstant with time, meanwhile the current starts to drop rapidly.

The yellow line in the graph represents the battery voltage This part of charging process is called constant current charging. Straight blue line represents the current and this line is constant with time. The charger reaches around 14.4V (pre-set voltage). The maximum current draw will continue until the voltage of Voltage level where the battery is discharged and slowly rise, meanwhile theД¬urrent drawn from the charger will be maxed out (the maximum current that is

When we connect the charger to the battery, voltage dips from 14.4V to a Lead Acid battery charging characteristicsДЄ 12V battery is generally charged at 14.4V or 2.40V perД¬ell. LetвЂ™s look at the charging characteristics graph of a lead acid battery:

Proper understanding will help you to determine at what voltage, at what current the battery need to be charged and when to cut-off from the charger, so that your battery will be charged optimally and have less chance of premature expiration or lose in capacity. It is very important to know how charging of high capacity lead-acid batteries are done, before you dive into the construction details of chargers.

How 100Ah / 150Ah / 200Ah Lead Acid batteries.

Project construction easy, the components are available as modules. We have proposedДЈ different charger circuits you may construct one that suits you. In this post we are going to construct simple 12V 100Ah leadДЄcid battery charger circuit which can deliver 10A of current.