# Batteries drain whilst switch

**URL:** <https://forum.clockworkpi.com/t/batteries-drain-whilst-switch/7204>\
**Category:** DevTerm\
**Tags:** hardware\
**Created:** [October 6, 2021, 10:51am UTC](https://forum.clockworkpi.com/t/batteries-drain-whilst-switch/7204 "2021-10-06T10:51:47Z")\
**Posts on this page:** 1\
**Showing post:** 19

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**Author:** ![markatlnk](https://avatars.discourse-cdn.com/v4/letter/m/8797f3/32.png) [@markatlnk](https://forum.clockworkpi.com/u/markatlnk)\
**Post date:** [September 3, 2023, 8:33pm UTC](https://forum.clockworkpi.com/t/batteries-drain-whilst-switch/7204/19 "2023-09-03T20:33:20Z")

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Here is my note from June 10th 2022.

I finally got time to look into this. Looking at the schematic of the power section, R107 and R108 create a divider that feeds pin 11 of the SY7215 part. Starting then turning off the system, I went to measure the voltage on the junction of R107 and R108. This caused the system to shut down. Found that odd, so I tacked a 1 Meg resistor on top of R108 to drop the 100K value just a bit. The meter should be about 10M so thought this would do it, it didn’t. I next reduced R108 down to 68K by putting in parallel a 220K resistor. This resolved the problem and the system now shuts down as expected.

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