Be sure to use Series 4 protection boards. Four single protection boards will not work and will cause reference voltage instability. 4. Now there are many protective panels in series, and many domestic manufacturers can provide them. You can request one on behalf of a sample. The purchase price is only more than 20 yuan. place an order with a foreign manufacturer.
1. Absolutely no, it will burn
2. Battery Capacity: The unit of measurement for battery capacity is actually the total number of electrons in the battery that can be released for external use. to use. 1mAh=0.001 Ampere*3600 seconds=3.6 Ampere seconds=3.6 Coulombs For example, a 1000 mAh battery can provide 250 mA constant current power for 4 hours.
The corresponding relationship between the open circuit voltage of lithium-ion batteries and the battery capacityterie is usually as follows: the percentage is the remaining battery capacity, and the right side is the open circuit voltage (OCV) of the corresponding battery.
100%----4.20V 90%-----4.06V
80%-----3.98V 70%----- 3.92V< /p>
60%-----3.87V 50%-----3.82V
40%-----3.79V 30%- ----3.77V< /p>
20%-----3.74V 10%-----3.68V
5%------3 .45V 0%------3.00 V
3.11V/15.6A=0.7 ohm
3.7V*3/0.7= 15A
However, after series connection, the current remains unchanged, only 2A, and it will burn
4. Generally used in mobile phones, lithium cobalt oxide battery, which is only 1000MAH and the maximum is 1350MAH
The battery of the parallel connected POS machine can reach 5000MAH
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C means Capacity: For example, if the capacity of a battery is 800MAH, 1C is 800ma,
If the capacity of a battery is 1000MAH, 1C is 1000ma, and 2C corresponds to 2000 mA
The batteriesGeneral lithium phosphate series are used for large currents, such as electric vehicle batteries