Battery care advice needed!

[Bill Ludwig]

This auto discharger works great if you want to bring your M2 battery down to the 65% storage level without having to monitor it.

1.5A Discharger for DJI Mavic 2 Pro/Mavic 2 Zoom Battery Amazon.com: 1.5A Discharger for DJI Mavic 2 Pro/Mavic 2 Zoom Battery: Toys & Games

 

[WithTheBirds]

What voltage is 40% on these batteries?

SOC estimation from terminal voltage is a difficult proposition for LiION given the remarkably flat discharge voltage profile.

You can rely on the depicted %charged as being significantly more accurate.

 

[parkgt]

SOC estimation from terminal voltage is a difficult proposition for LiION given the remarkably flat discharge voltage profile.

You can rely on the depicted %charged as being significantly more accurate.

Is that depiction not based on some underlying voltage?

 

[WithTheBirds]

Is that depiction not based on some underlying voltage?

No. There are other factors that provide for significantly higher accuracy- SOC = remaining state of charge/ full charge capacity. RSOC and FCC are constantly revised having regard to actual measured parameters including coulomb counting during charge and use, internal resistance, temperature and real world load conditions.

 

[Randall8686]

Thanks but it’s not available in the UK unfortunately. The US version probably won’t work because of it being 120v whereas the UK uses 240v . Any other solutions?

just FYI the spec of that charger is "Worldwide travel compatible - 120V or 220V." so would be fine here in the UK. you could either change the plug or use an adapter. It contains a switch mode power supply so automatically works with whatever voltage you throw at it around the world. its one of the best chargers available.

 

[DJI DelBoy]

Not that I know of.

Hi Msinger, I need some advice. Regarding the “time to discharge” number of days in the DJI GO app, which setting is recommended? Thanks

 

[lolo780]

I set my batteries to 1 day, that way they spend as little time as possible fully charged. Wine fridges are great for lipo storage. Keep them cool when not in use.

edit: just realized this is M2P and you can't change the number of days for some reason.

 

[msinger]

Regarding the “time to discharge” number of days in the DJI GO app, which setting is recommended?

I set mine to 2 days when that setting is available in DJI GO. I normally don't need to rely on it though since I only charge the batteries I want to use.