7.4V 2200mAh 18650 Lithium Battery for POS

Additional information

Rated Voltage


Rated Capacity


Battery Size

67.6×38.5×23mm Max

Charge Temperature


Discharge Temperature



Financial Equipment

Lithium Battery Process Work Flow

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.

Product Details

Battery model: E550-18650
Nominal voltage: 7.4V
Nominal capacity: 2200mAh (discharge at 0.2C to 6.0V)
Factory voltage: 7.2V~7.8V
Product size: MAX67.6×38.5×23mm
Product internal resistance: ≤250mΩ
Battery weight: 100g
Output mode: PH-5P-2.0 plug, UL3239 22# 20±5mm
Executive standard: GB/T 18287-2000
Warranty period: 18 months
Working temperature: 0~45℃ (charging), -20~60℃ (discharging)
Battery charging: charging limit voltage: 8.4V charging current: 1100mA (standard), 2200mA (maximum)
Battery discharge: discharge cut-off voltage: 6.0V discharge current: 440mA (standard), 4400mA (maximum)

According to the customer’s requirements and specifications, design the POS machine intelligent battery pack matched with the host, and integrate the intelligent fuel gauge with communication protocol, lithium battery and safety protection performance into the solution, which can reach the intelligent lithium battery pack and the POS machine host. Information sharing, and finally realize a reasonable, efficient and safe battery management solution.

In the design process of the whole scheme, the direction of achieving the most perfect integration with the host is to ensure the safety of the battery, the battery pack and the entire system, and the first consideration is to meet the corresponding design regulations and certification regulations. At the same time, in order to ensure the safety and reliability of the lithium battery, multiple layers of protection must be adopted inside the battery pack to prevent the lithium battery from being damaged due to overcharge, overdischarge or short circuit.

POS machine intelligent battery design scheme:

Protection board (PCM): It is mainly a protection circuit designed for rechargeable intelligent battery packs. Due to the chemical characteristics of lithium batteries, it is necessary to provide intelligent power calculation, overcharge, overdischarge, short circuit, overcurrent and overtemperature protection functions. . To avoid fire, explosion and other hazards.

Protection IC (Protection IC): The main protection function chip of the design scheme, which performs online monitoring of overcharge, overdischarge, overcurrent, short circuit and other functions of the cell. Make the cells work in a safe, stable and efficient range.

Overcurrent Protection Sheet (PTC): Mainly designed for secondary protection function. PTC resettable fuse with overcurrent protection, automatic recovery dual function. The PTC in the battery product can prevent the high temperature discharge of the battery and the occurrence of unsafe high current.

Field-effect transistor (MOSFET): MOSFET plays a switching role in the protection circuit, so that the voltage across the load will never increase or decrease, ensuring voltage stability.

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