Hello,
I received the following question from a customer of mine:
"We use BQ4802 as RTC, without SRAM, powered by 3V lithum battery. We found two issues: - battery low warning is raised after about 3 hours of battery powered operation. Battery voltage is still about 3V. Time and date values are invalid. This happens on all (6) of our prototypes. - On one of our prototypes clock slows down (about 60 seconds in 2 hours), but only when powered from battery. When device is powered normally, clock is correct. We will be grateful for your response."
Can anyone please help us on this?
Thanks in advance.