3S 4S 5S BMS 100A Lithium Polymer LiFePO4 Battery Protection Circuit Board Balance Charging

Product Structure: Lithium Battery Protection Board 

Application: Lithium Iron Phosphate, Lithium Ternary, Lithium Cobalt, Lithium Manganate Battery Packs 

Specially designed lithium battery protection board for lithium iron phosphate, lithium ternary, lithium cobaltate, and lithium manganate battery packs. This protection board contains 3S, 4S, and 5S lithium battery protection board
(universal version according to the actual needs of adjusting the corresponding components), the use of mature protection circuits, special IC, and support for the protection of broken wires, imported high-current ultra-low internal resistance MOS (single MOS internal resistance as low as 3 milliohms), with a variety of perfect and stable charging and discharging protection functions, battery cell hardware balance processing, appropriate balance current, balanced and reasonable heat, does not affect the performance of the battery pack.

Answer: There are two issues to consider whether you can use this protection board: how many strings are your batteries, you need to buy a protection board corresponding to the number of strings. Second, what is the material of your battery? We have protection boards with two parameters lithium iron phosphate and polymer. If your battery is lithium iron phosphate single cell nominal 3.2v, you need to choose lithium iron phosphate 3.2v in the category Yes, if it is a polymer (ternary, cobalt acid, lithium manganese oxide battery) single-cell battery nominally 3.6v (or 3.7V), please choose the classification of polymer 3.7v. 

2. How can I tell what material my battery is made of? 

Answer: You can look at the nominal voltage of your battery. Lithium iron phosphate batteries are generally marked with 3.2V, and other batteries are generally marked with 3.6V or 3.7V. You can also directly ask the seller what material the battery is made of. Many buyers say that my battery is 18650 or 26650 soft pack, etc. This is the shape, not the material! We cannot determine your battery protection parameters based on this.

Answer: How much protection board to choose depends on your load power. In our protection board, if you use split output, the output current is about 70A, and the power is about 800w. If you use the same port output, the output current is 50A, and the power is About 600w. 

Answer: Your battery capacity is not directly related to the current of this board. Large capacity does not mean that the battery is large. It mainly depends on the continuous current. That is to say, the greater your load, the greater the continuous current of the protection board you choose. The bigger it is, the less it has a direct relationship with the battery capacity. 

Answer: Lithium batteries must be charged with a special charger for lithium batteries. Do not use a lead-acid battery charger. Lead-acid charging may cause high-voltage breakdown of the MoS tube of the protection board, causing the protection board to be overcharged and not protected. Charger voltage setting: Use your battery string number * 4.2V, which is the charging voltage of the non-iron lithium battery, and the charging voltage of the iron lithium battery is the battery string number * 3.60V, which is the charging voltage of the iron lithium battery, and the charging current standard 0.2 times the capacity.

The meaning of balance: the battery pack is connected in parallel and then connected in series with many pieces of batteries. It is impossible for each battery cell to be exactly the same, so you can only use the Those with similar performance are put into a group, but when charging, the performance of each battery cell is different. - It will cause the voltage to be inconsistent after the charging is completed, and the balance is when charging The high-voltage battery is discharged with a resistor, and the low-voltage battery is charged to a higher voltage. In order to achieve the same voltage of each battery cell and improve the performance of the whole battery pack.