# HL7810 - Over consumption in Hibernate mode
**URL:** https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900
**Category:** Legacy HL Series
**Created:** [May 13, 2025, 3:11pm UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900 "2025-05-13T15:11:54Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@mickael.goarant](https://forum.sierrawireless.com/u/mickael.goarant)
#### Post date: [May 13, 2025, 3:11pm UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900/1 "2025-05-13T15:11:54Z")
Hi,
I tested HL7810 on Eval board HL78-R3 and I have over consumption during hibernate mode after second being.
The last firmware version as been updated:
_HL7810.5.7.2.0-24.10.0.FreeRTOS.w43_
_HL78xx.5.7.2.0.RK\_03\_02\_00\_00\_43621\_001.20241029_
_IMEI-SV: 3547205115610420_
_Legato RTOS: 24.10.0.FreeRTOS.w43 2024/09/18 16:49:33_
_atSwi: 24.10.0.FreeRTOS.w43_
_UBOOT: 01.03_
_Apps: RKAPP\_03\_02\_00\_00\_42831\_012\_\_a9591ae8197c6856cd9bbe5e66be200d0d05acac_
_MAC: ALT1250\_03\_02\_00\_00\_43621\_FW_
_PHY: 12.50.329298_
_PMP: 329207_
_AISE: ISE2APP\_00\_00\_00\_09_
_SBUB: 1_
_SBFW: 1_
_FPuK1: 1B993663_
_FPuK2: 25DF28C5_
_RBUB: 0_
_RBFW: 0_
_MCU-Disable: 1_
I removed jumpers CN1310, CN1308, CN1309 and CN1301 (pin1-2) as recommended in “3.1.4 Module Current Consumption Meas” chapter.
I connected a power supply OTTI ARC on CN804 and CN800 to measure the consumption.
USB cable is connected on UART1 connector.
I configured the hibernate mode with following command: “AT+KSLEEP=1,2,10”
=\> read response “AT+KSLEEP?” =\> +KSLEEP: 1,2,10
I configured the PSM mode with following command: “AT+CPSMS=1”
=\> read response “AT+CPSMS?” =\> +CPSMS: 1,“00101100”,“00001010”
The provided SIM with eval board is inserted in SIM connector.
The Eval board is powered off and WAKE UP switch on ON position
Here are the following actions done:
1. Power up of OTTI ARC at 3.6V on CN804 and CN800
2. Wait 30 seconds
3. “AT+CFUN=0” command and next configure WAKE UP switch on OFF position (WAKEUP = 0) and consumption is around 2.72 µA as shown below:
4. WAKE UP switch on ON position
5. command AT+CFUN=1
6. wait around 14 seconds
7. command AT+CFUN=0 and next configure WAKE UP switch on OFF position and the consumption is around 28.5 µA as shown as below:
Can you help me to analyze this issue and understand how I can have always 2.8 µA consumpation each time the module goes to hibernate mode
Regards
---
### Author:  [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [May 13, 2025, 4:12pm UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900/2 "2025-05-13T16:12:56Z")
are you going to measure the PSM mode hibernate current?
If yes, why are you sending AT+CFUN=0?
BTW, after you sending the AT+CPSMS to configure the T3324 and T3412 timing, you should wait for the network to return the actual timing:
e.g.
```auto
AT+CPSMS=1,"11100000","11100000","00111001","00001010"
OK
+CEREG: 4,,,,,,"00001010","00111001"
```
Lastly, you can have a look on this application note about low power mode (Section “PSM Typical Use Case – Data Transmission Initiated by Host” ) :
> **[HL78xx - Low Power Modes Application Note](https://source.sierrawireless.com/resources/airprime/application_notes_and_code_samples/hl78xx_low_power_modes_application_note/#sthash.fu10DYyh.dpbs)**
>
> This document provides a detailed description of the HL78xx’s low power modes while it is configured in PSM or eDRX.
---
### Author:  [@mickael.goarant](https://forum.sierrawireless.com/u/mickael.goarant)
#### Post date: [May 14, 2025, 8:36am UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900/3 "2025-05-14T08:36:28Z")
Hello,
In this case I doesn’t test the PSM mode but hibernate mode.
I’m trying to test 2 cases :
1. The module needs to be configured after first power-up during manufacturing process. Next we set it in hibernate mode.
2. an unsuccessfull connection to the network due to a lack of network or out of range, that’s why I sent AT+CFUN=0 to stop the module and save battery.
As you said I will test the successfull case in the next step.
---
### Author:  [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [May 14, 2025, 8:49am UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900/4 "2025-05-14T08:49:50Z")
if you use AT+CFUN=0, why don’t you test the OFF mode of the module?
---
### Author:  [@mickael.goarant](https://forum.sierrawireless.com/u/mickael.goarant)
#### Post date: [May 14, 2025, 8:51am UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900/5 "2025-05-14T08:51:05Z")
So I understand the command AT+CPWROFF and toggle off WAKE UP signal must be used in my case.
---
### Author:  [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [May 14, 2025, 8:51am UTC](https://forum.sierrawireless.com/t/hl7810-over-consumption-in-hibernate-mode/34900/6 "2025-05-14T08:51:35Z")
yes, according to specification, it is the OFF mode