Yes the weather will have an effect on battery's. im an EV guy and this 1 day this winter i found out that i had to take the battery inside when at work because in the time at work it drained about 20% of my battery.

But the case of the battery meter in the phone, it really doesn't work very good, take it from someone that knows battery's. i only rely on the battery voltage and can see from that how much capacity that's left.


NOTE: EV is a Vespa Ciao (converted), battery is only 4KG.