Battery voltage not correct help

[Cam3roon2k41999]

Hi, so I have a 60v 25ah lithium battery17s fully charges to 71.4v) and recently with the cold weather etc I left my stealth bomber in a outhouse where it is very cold, when I went out the other week I charged the battery when it was freezing and noticed the battery was on 66v just after a short ride when normaly the same distance at the same speed etc I have about 69-70v left I've done some testing today when charging the battery when it's room temp and its fully charging to 71.2v but when I take it off the charger it reads 71.1v what could this be and is it a major problem? Also it shows 71.1v through the actual charger port then shows 0v after about 30 seconds.
So I'm not sure If that's just the BMS or something but I didn't realise I shouldn't charge the battery when it's that cold until I looked online lol
I'm not a pro with these batteries so any help would be appreciated thanks.

 

[Nealh]

Sounds pretty normal to me, cold batteries act differently and don't accept the full Ah but will show near full voltage. A lessen learnt make sure batteries are at ambient room temp for a couple of days before attempting charging, never though leave to close to a very hot source.

 

[Cam3roon2k41999]

Thanks for the reply I recently seen a house on the news that gone up in flames due to a lithium battery it'd actually scared me a bit since I charge mime in my bedroom lol

 

[Cam3roon2k41999]

Now I'm even more confused lmao it says on the sabvoton app my battery is 71.96v how can it be that when it fully charges at 71.4v?

 

[Nealh]

The app is obviously wrong.