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Battery pack is going to 0V, is it OK for MAX17048 SOC estimation ?

Category: Hardware
Product Number: MAX17048

Hello,

I am using a Li battery pack containing Protection Circuit Module (PCM) to power my IoT device. I am using the MAX17048 to monitor battery SOC.

When I use my IoT device, it drains the battery until the voltage goes bellow the overdischarge voltage of the PCM. Consequently, at the end of the discharge cycle, the battery voltage ends to be 0V due to PCM protection so the MAX17048 sees 0V attached to VDD.
In such condition, when the battery is recharged, the voltage increases within his normal range.


  1. Is it OK for the fuel gauge to go to 0V at every complete discharge cycle ?
  2. With my understanding, the MAX17048 will perform a Battery Swap and a Quick Start procedure after each full discharge cycle. Is it a problem for a correct SOC estimation ?
  3. Should I expect correct SOC estimation during the recharge after being discharge to 0V ?

Thank you in advance for your help !!



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[edited by: GenevaCooper at 3:36 PM (GMT -5) on 6 Dec 2023]
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