Ampere Time low temperature sensor

[David Hunt]

I know Will identified the lack of low temp sensor but I remember another video where he stated that the engineers are Ampere Time stated that their batteries DONT NEED ONE! Can anyone verify this comment from Will and/or AT?

Thanks

 

[carolinabigfoot]

According to the user manual it seems that the Xantrex 30 A SCC has a temperature sensor coupled with a programmable low temperature disconnect and reconnect option.

 

[eXodus]

First, you know what a low temperature sensor does in most BMS? Is disconnects the battery.
That actually wrecks some inverters and MPPTs - most of those state in the manual never to run without battery.

The low temp disconnect protects some batteries - but also might damage other parts.

Having a charger with sensor on the battery - and programming to not - or only slowly charge - is the much better idea.

According to the user manual it seems that the Xantrex 30 A SCC has a temperature sensor coupled with a programmable low temperature disconnect and reconnect option.

Correct, the charger should be the part in the system which prevents low charging - and not the battery.

The low temp charging protection is like a breaker - in primary design considerations we should not rely on it.
You put in in a breaker - if the something else fails to do it's job.

The logic an design of the charger(s) should reduce charging when in frozen state, and not the battery just cutting the connection...

 

[eXodus]

Ampere Time stated that their batteries DONT NEED ONE!

modern electrolyte doesn't freeze at 0 Celsius. It's well below that, and it's not like from one second to another it's frozen like water.
It's a gradual process.