14.8v 18650 Lithium Battery Protection Board 4 Strings 16.8v Overload and Over Discharge Short Circuit Protection 20a Current


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Overview and Specifications:

Product Attribute
Accessory Type : Extension Board
Compatible With : MCU, ARM, raspberry PI, Arduino

This protection plate cannot be used for lithium iron phosphate battery, hernia lamp, manual drill battery pack, electric fish machine battery pack, electric bicycle battery, stroller battery, 775 ( 4a) or more motor, 1w fisheye led lamp, used for the above please pay attention to customers who buy in combination!
The power range described applies to the following products:
Low power inverter, massager battery pack, LED lamp backup power supply, electronic products, solar street lamp battery pack, backup monitoring power supply, and other products.
Note: for products discharged above 3a, the battery discharge rate must be above 3c.
Rate calculation formula: 1c battery rate, 2000 capacity is equal to 2ah * 1 = 2nd upper working current limit.
3c battery rate, 2000 capacity is equal to 2ah * 3 = 6th upper working current limit.
In use, the battery will heat up, which means that the battery charge is not applicable. In this case, it cannot be used for a long time, and the battery will be damaged quickly.
Note 1: wiring 0v (b-), 3.7v (b1), 7.4v (b2), 11.1v (b3), 14.8v (b +) strictly according to the diagram, not intentionally short-circuiting!
Note 2: After connecting the cable, you need to charge it first, then there will be an output.
Note 3: When connecting 4 sets of batteries in series, make sure that the voltage of each set of batteries is the same. If they are not the same, charge each battery pack separately and use in series. During the discharge test, the group of batteries whose voltage drops quickly is a low battery.
Explain: don’t mix good batteries and bad batteries together! The closer the internal capacity / resistance of the 4 battery packs, the better! (2 good batteries + 2 bad batteries = 4 bad batteries).
The lithium battery protection board properties:
Model: HX-4S-D20 overload voltage range: 4.25-4.35v ± 0.05v
Size: 35 * 35 * 3.6mm over the discharge voltage range: 2.3-3.0v ± 0.05v
Upper working current limit: 10th working temperature: -40 — + 50 ℃
Instant current upper limit: 20th storage condition: -40 – + 80 ℃
Quiescent current: less than 30your service life: more than 50000 hours
Internal resistance: less than 100mprotection short circuit protection: can be protected, needs to be charged to recover
Charging voltage 16.8v-17v
The size of the protection plate and description of the device;
The size of the protection plate is 35 * 35 * 3.6mm; components are S-8254AA protection chip and d403 * 4