Battery storage voltage?

[parkgt]

Besides the advice to charge to 50% or let the ten days go by for self-discharge does anyone have strong opinion on the best storage voltage for the M2 batteries they would like to share?

Usually 4s RC batteries are storage charged to about 3.8Vper cell or (4x3.8) 15.2v for the pack.

I have a decent HiTec X4 charger that will storage charge them to the normal 15.2v mark. But, since the M2 batteries are rated at 17.6v rather than the more typical 16.8 for 4s, a charge of 15.2v for storage only reads about 34%when connected.

I like the automation of storage charging the HiTec X4 does; but don't know 34% is enough.

Also, the HiTec X4 only outputs 4.2V per cell reaching 16.8v for the pack and reading 86% when installed.

Rather than charging to 100% when uncertain of when the next flying day is going to be, I may just initially charge to the 86% the HiTec will do and then top of before flights.

Thoughts/

 

[brett8883]

Besides the advice to charge to 50% or let the ten days go by for self-discharge does anyone have strong opinion on the best storage voltage for the M2 batteries they would like to share?

Usually 4s RC batteries are storage charged to about 3.8Vper cell or (4x3.8) 15.2v for the pack.

I have a decent HiTec X4 charger that will storage charge them to the normal 15.2v mark. But, since the M2 batteries are rated at 17.6v rather than the more typical 16.8 for 4s, a charge of 15.2v for storage only reads about 34%when connected.

I like the automation of storage charging the HiTec X4 does; but don't know 34% is enough.

Also, the HiTec X4 only outputs 4.2V per cell reaching 16.8v for the pack and reading 86% when installed.

Rather than charging to 100% when uncertain of when the next flying day is going to be, I may just initially charge to the 86% the HiTec will do and then top of before flights.

Thoughts/

Mavic batteries are HVLi batteries not standard LiPos. Don’t use a LiPo charger with them. In fact don’t use any other charger but chargers made for Mavic 2.

They should be stored at between 40-60%. Manually discharging to 40-60% is preferred but you can adjust the time to auto discharge down to 60% in the DJI Go app to as little as 1 day if you want but 35% isn’t enough.

If you don’t use them for 3 months charge back up to 60%

 

[lolo780]

Mavic batteries are HVLi batteries not standard LiPos. Don’t use a LiPo charger with them. In fact don’t use any other charger but chargers made for Mavic 2.

They should be stored at between 40-60%. Manually discharging to 40-60% is preferred but you can adjust the time to auto discharge down to 60% in the DJI Go app to as little as 1 day if you want but 35% isn’t enough.

If you don’t use them for 3 months charge back up to 60%

I didn't know you could change the number of days for auto discharge on the Mavic 2.

 

[brett8883]

I didn't know you could change the number of days for auto discharge on the Mavic 2.

Nice catch @lolo780. Sorry I apologize I am mixing up the Mavic Pro and the Mavic2 again. There are oh so similar in so many ways but different in weird little things like that.

 

[parkgt]

Mavic batteries are HVLi batteries not standard LiPos. Don’t use a LiPo charger with them. In fact don’t use any other charger but chargers made for Mavic 2.

I could be wrong but I don't think there is any magic to a charger for HiLV batteries other than that they will charge to a higher max value. I do not think a regular charger can in anyway damage a M2 battery.

In fact stopping at 86% would probably extend the life of the M2 battery but at the cost of flight time.

It would be interesting to know what voltage a auto-discharged M2 battery gets down too after a couple of weeks.

 

[Sniperfritz]

I land on 50 persent left. Stil more flight time than my Air.