Battery specifications say -15C to 40C usage
For electricians a 0 degree battery has a resistance of almost double that of 25C. It means for normal people that the power of the battery is compromised or lower than in normal working conditions. Cold temperature can give a battery up to 50% less range. However in my experience it has been around 15-35%.
i am suspect of that -15C tbh, the battery may give enough current at that temp to technically function, but i feel certain that doing that reguarly is going to cut its life span significantly
Follow-up: The snow melted and I was able to test the parallel battery arrangement. For some reason, it won't even drive now. Everything looks okay. It says "READY". No go.
I suspect that the controller prevents the motor from engaging when the battery is "charging". In this case, battery 2 was charging battery 1. I think I might have to give up on this, since there's no way for me to alter the controller's software.
the batteries cannot charge one another connected in parallel (positive to positive, negative to negative), only in series (positive to negative, negative to positive) can they do this, and you definitely never want to connect lithium batteries in series
what voltage do you get on each battery separately (unconnected) and when connected in parallel?
(if you get a different reading from each battery when connected in parallel, then there is either a broken connection or a short somewhere, or they are not really in parallel)
Any updates?
What I understand is that 2 batteries never work correctly... without the original parallel connector?
Or also the original parallel connector seems to be a bullshit. But I did not get it why.
Therefore should I stick to one battery and never waste my money with a second bat?
by default, the soco is intended to house two batteries, but that you switch over to the second one as needed, rather than running both together in parallel - its a strange way to do it, but does avoid a few complications
if you need the extra range, its worth getting the extra battery, but if you don't, then you will get slightly better efficiency carrying only one, because of the weight difference
