I did not fly with dron for two months. when I turned on the drone battery it was 50%. I started to fly and I received the warning crittical low volltage. on the remote battery it was 100% full and at the dron 50%. Can this problem be solved by charging the battery at 100%? thank you in advance

I have ohantom 3 adv. I did not fly with dron for two months. when I turned on the drone battery it was 50%. I started to fly and I received the warning crittical low volltage. on the remote battery it was 100% full and at the dron 50%. Can this problem be solved by charging the battery at 100%? thank you in advance

Yes that should solve it , a battery left for a couple of months reading 50% should never be used to start flying and is likely to drain immediately, you should never start a flight unless you have a freshly charged 100% battery.

Thanks a lot hallmark007

Never launch with a partially discharged battery.
The % indicator is only accurate when starting with a full battery.
As you've seen the battery may not be able to deliver the required voltage.
You're lucky you didn't have your drone fall and crash.
Simply charge the battery fully to prevent this.

Did you power on the drone in a low-temperature condition?  It is recommended to keep the battery temperature around 20 degrees centigrade, please fully charge it, then try it again.