# \[A06\] Suspend to ram is working

**URL:** <https://forum.clockworkpi.com/t/a06-suspend-to-ram-is-working/9263>\
**Category:** DevTerm\
**Created:** [December 1, 2022, 6:37am UTC](https://forum.clockworkpi.com/t/a06-suspend-to-ram-is-working/9263 "2022-12-01T06:37:08Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![yatli](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/yatli/32/6253_2.png) [@yatli](https://forum.clockworkpi.com/u/yatli)\
**Post date:** [December 1, 2022, 6:38am UTC](https://forum.clockworkpi.com/t/a06-suspend-to-ram-is-working/9263/2 "2022-12-01T06:38:04Z")

</div>

(reserved for future updates)

## What R124?

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/clockworkpi/original/2X/1/124d8c24cfe2a64c84666d572be7a84debf83caa.jpeg)

## USB VBUS power control mod

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/clockworkpi/original/2X/9/90e4a7d41e1a7e4a80de8ea58e108eb85bb77e66.jpeg)

### Note, connect the R116 left side pad to a R10K. Verify with a multimeter that it is NOT connected to R117!

### Note, connect R508 left side pad, or the power chip pin. Make sure it’s not connected to the right side pad which is 5V!

### Note, if you’re trying this on mainboard 3.14-V5 (the new one that comes with uC), disconnect R512 instead of R508. See: [The ClockworkPi V5 compared to the V4, corrected the power management power consumption issue - #35 by yatli](https://forum.clockworkpi.com/t/the-clockworkpi-v5-compared-to-the-v4-corrected-the-power-management-power-consumption-issue/10842/35)

## Battery life test, no USB VBUS mod

2022-12-2 01:42:51 100%  
2022-12-2 08:26:54 90%  
2022-12-2 11:06:02 89%  
2022-12-2 12:25:01 87%  
2022-12-2 13:35:47 86%  
2022-12-2 15:50:46 79%  
2022-12-2 18:35:15 70%  
2022-12-2 21:47:34 62%  
2022-12-2 22:54:00 57%  
2022-12-2 23:53:51 53%  
2022-12-3 00:47:18 50%  
2022-12-3 01:47:36 45%  
2022-12-3 03:04:20 39%  
2022-12-3 13:25:29 5%  
2022-12-3 13:42:54 4%  
2022-12-3 14:46:05 3%  
2022-12-3 15:24:10 3%

~~Very likely it will do \>2days..~~  
Edit: uh oh the fuel gauge not very linear.  
We may need to add support for axp228 battery capacity calibration.

Current projection:

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/clockworkpi/original/2X/1/19778fcd9d1011135ae99faa363f8509cd61ac42.png)

## Battery life test, with USB VBUS mod (kbd off in suspend):

| TIME | BATT |
| --- | --- |
| 1/30/23 9:26 PM | 100 |
| 1/31/23 2:51 AM | 100 |
| 1/31/23 5:33 AM | 100 |
| 1/31/23 8:00 AM | 100 |
| 1/31/23 4:33 PM | 93 |
| 1/31/23 8:53 PM | 89 |
| 2/1/23 4:15 AM | 83 |
| 2/1/23 8:18 AM | 79 |
| 2/1/23 8:55 PM | 69 |
| 2/2/23 12:23 AM | 66 |
| 2/2/23 8:07 AM | 59 |
| 2/2/23 11:16 AM | 56 |
| 2/2/23 9:44 PM | 47 |
| 2/2/23 11:07 PM | 45 |
| 2/3/23 3:23 AM | 41 |
| 2/3/23 6:58 PM | 2 |

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/clockworkpi/original/2X/7/7311b1bd6ed5084018a7503501f5b9f43f04c0b1.png)

So, it lasted from 1/30/23 9:26 PM to 2/3/23 6:58 PM, shy of FOUR DAYS.  
The USB VBUS mod almost doubled the standby time.

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