18650 2S1P 7.4V 4400mAh
Below is a simple explanation of each parameter:
The important characteristics of the 7.4V lithium-ion battery pack are: high energy, high density, high voltage, no pollution, no metal lithium, high cycle life, no memory effect, and fast charging. So it has received the attention of many industries.
Because of its attention, it has a wide range of applications. Let’s take a look at it in general.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
With 15+ year’s experience, we manufacture and produce different solar light and solar power system for diffirent applications.
This part of the circuit is to output 8.4V to charge the lithium battery.
TP5100 is a switching step-down dual-cell 8.4V/single-cell 4.2V lithium battery charge management chip.
TP5100 has a wide input voltage of 5V-18V. The battery charging is divided into three stages: trickle precharge, constant current, and constant voltage. The trickle precharge current and constant current charging current are adjusted by external resistors, and the maximum charging current is up to 2A.
We are a professional lithium battery factory in China. Now we briefly introduce how to produce lithium batteries. It starts from cathode & anode mixing, coating, baking, calendering, automatic slitting & cutting, winding, top & side sealing, electrolyte injection, pressing formation, forming, capacity grading, OCV1 & OVC2, cell to PCB, insulation and shipping. Welcome to contact and ask for the workflow table list.
When we talk about 7.4V battery, it generally refers to 18650 battery. We mostly use 18650 cell at 1800mAh, 2000mAh, 2200mAh, 2500mAh, 2600mAh, 2900mAh and 3300mAh. We can choose their capacity based on customer discharge demands.
Except for 18650 2S1P battery pack, we can parallel some 18650 cells. They can be 2P batteries, 3P batteries, and even more. It can support longer running time. The total 18650 cell amounts will be larger.
5V input to charge the 7.4v battery, it is necessary to use boost charging technology. For example, using 5V2A input, to the battery terminal, according to the battery voltage of 8V, the actual input to the battery current algorithm is 5V*2A=10w, then the efficiency of 0.85 is 8.5w, and the actual charging current is about 1A according to the battery voltage of 8V. If you press your battery capacity of 2100mAh for about 2.5 to 3 hours, I know that an FLD5301 is a very simple SOP8 package or a dual-light indicator. Adaptive input.
It depends on the lithium-ion battery material chemistry system.
Ref 18650 battery and polymer battery, the rated voltage 3.7V, and charge cut-off voltage 4.2V.
Ref LiFePo4 battery, the rated voltage 3.2V, and charge cut-off voltage 3.65V.
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We will contact you within 1 working day, please pay attention to the email with the suffix “@hlcbattery.com”.
