Nov-06-2021 08:04 AM
Nov-09-2021 07:23 PM
EMD360 wrote:
I guess I could just disconnect the negative and suspend the mifi service for the winter. At least a couple of months. Isn’t that too simple though?
Nov-09-2021 07:04 PM
Nov-09-2021 12:00 PM
EMD360 wrote:
This is the first winter for my lithium batteries. I bought a temp stick to monitor the temps in the battery compartment. https://tempstick.com/ Temp Stick I added a WiFi line to the rv to read temp and solar plus battery info remotely. But I’m not sure how to deal with winter.
I won’t take the batteries out. The wiring is far too complex and too much work to just disconnect.
So far the low temp in the compartment has been at night so solar is not charging the batteries. We had one night at 30° but the compartment was 35°. The batteries have a constant load of about 9 to 11 watts. So the batteries are rarely below 95% charge. I could turn off the DC power but then could not monitor remotely!
I bought a battery warmer pad for the compartment even though it was not recommended for lithium batteries. It is thermostatically controlled to turn on at 35 but does not turn off unless the temp reaches 80°. It means once it turns on it won’t go off unless I control the extension cord with WiFi. I’m not sure why the upper shut off temp is so high. Instructions say to unplug it if the battery is warm enough.
So with my system not charging the batteries in the cold and having them depleted 10% is an issue over winter.
Nov-08-2021 06:55 PM
Nov-07-2021 04:47 PM
pianotuna wrote:rhodedog98 wrote:
Thanks everyone this clears up a lot of cobwebs for me this puts me in the right direction.
From a seller:
https://www.solacity.com/how-to-keep-lifepo4-lithium-ion-batteries-happy/
Nov-07-2021 08:05 AM
rhodedog98 wrote:
Thanks everyone this clears up a lot of cobwebs for me this puts me in the right direction.
Nov-07-2021 06:47 AM
Nov-06-2021 05:25 PM
rhodedog98 wrote:
Steve thanks but would the core freeze if they are left outside?
Nov-06-2021 02:31 PM
Nov-06-2021 02:24 PM
Nov-06-2021 02:09 PM
Nov-06-2021 11:42 AM
Nov-06-2021 11:03 AM
Nov-06-2021 08:41 AM