NRF9160 Primary battery

[Balamurugan]

Hi,

We are developing  nrf9160 sensor based product powered by primary battery(non rechargeable). Sensor current consumption is less than 1 mA.

while trying Saft LS14500 battery nrf9160 is continuously restarting during modem activity. Same works well with Li-PO rechargeable battery,looks like Saft LS14500 is unable to supply enough peak current.

Could you please recommend the primary battery chemistry type be used with nrf9160 to work.

[MJD093]

Looking at that battery, it does say that the maximum recommended constant current drain is 50mA. The modem will use around that value of current while in RX. You need to find a battery that can handle the maximum current the modem will use if the network forces it to use 23dBm. Section 5.2.1.14 of the nRF9160 OPS has the information on modem current consumption.

[Balamurugan]

Thanks!!!

we went through docs and got idea power consumption.

Also we tried "CR123A" primary battery(LiMnO2) its working.

we need your advice..Is there any other chemistry type tried with nrf9160? we would give a try to finalize for production.

[MJD093]

Hi,

There is nothing about the chemistry of the battery that made the Li-Po battery unusable. It’s what it was rated for and designed to output. 

There are plenty of Li-Po batteries that can handle more than 50mAs.

Whilst I can not say what battery we use in other products, what I can say is that it is rated to a output 0.5C standard continuous current from a battery that is 1A in capacity.