LiSOCl2+ Super Cap Battery Expert

[chek28]

Hello,

I am looking for support from a specialist in power stages, current consumption etc. especially with batteries in IoT devices mainly.

We developed an IoT location and telemetry device that in its first version we did it with 3xAA alkaline batteries and it works quite well. Both the MCU and the IoT Module work from 4.5V to 3.2V.

Now we require to use the same PCB but with a battery pack of 2 or 3 LiSOCl2 size18505 + Super Capacitor. The maximum peak currents is 400- mAh approx.

The requirements are as follows:

- To know if the Super Cap size is sufficient to recharge if the device reports max every 5 minutes permanently on Cat-M mainly. It is to send a payload of about 300 bytes.
- To know if a booster or step up is required and what features. The battery runs from 3.6 - 2.0V and we need to have the output voltage at 3.3V. The ideal is to maximize the capacity of the battery without the booster is depleting the battery considerably.
- In other cases it will report once or twice a day, and is expected to have a life of 5 to 7 years with a 2 battery pack totaling 8.2Ah nominal.

Battery LiSOCl2
Nominal Capacity 4100mAh *1
Nominal Voltage 3.6V
Max. Continuous Discharge Current 80mA
Max. Pulse Current 150mA *2
Weight Approx. 29g
Self-discharge Rate ≤ 1%
Operating Temperature -55~85℃

Sup Cap 14250
Nominal Voltage 3.67V
Nominal Capacity (3.67V）
Internal Impedance ≤250mΩ
Max. Continuous Discharge Current 800mA
Max. Pulse Current 2600mA
Max. Charging Current 60mA
Max. Charge Voltage 4.0V
Discharge End-off Voltage 2.5V

We are not experts in this area and require guidance on what to test.

Thanks in advance for your support!

 

[coco]

Dear friend ,

We are a lithium battery supplier for IOT device. We are processing the similar solution for another IOT customers.

Do you have any space limitation in your IOT device ? How is max size which you accept for the battery pack ?

For the current use ER18505-2+ super cap 14250, did you test it ? How is the performance ? If the pulse ability is not enough , you can try a bigger size super cap 1550.

This is widely solution for IOT device. We can submit free samples for testing. My email 413255202@qq.com or coco@sunmoonbat.com Mobile:8613986282065