Forum Discussion

Rmack1's avatar
Rmack1
Explorer
Jun 04, 2016

Temp limits for battery charging

Is there a problem with charging batteries with a battery charger if it's pretty hot?

I have my TT batts charging in the garage, but it's a heat wave today here in SoCal, and it must be over a hundred in there. Should I abort and wait for night?

8 Replies

  • All seems to be good. It's cooling down from the heat of the afternoon. Still charging.
  • smkettner wrote:
    Yes charge the battery. Use the 6 amp setting and let it go.
    You will have no issues with this charger in these conditions.
    Remaining low on charge is also hard on the battery.

    Do check the water is covering the plates.


    I did check the water levels. It's on auto.
  • Yes charge the battery. Use the 6 amp setting and let it go.
    You will have no issues with this charger in these conditions.
    Remaining low on charge is also hard on the battery.

    Do check the water is covering the plates.
  • Rmack1 wrote:
    smkettner wrote:
    Typical converter at 13.6 volts is fine. Otherwise what are you charging with?
    Just because it is 100 out does not mean your battery is over 85 yet.


    It's a Duralast DL-50-CEC 50 amp Battery charger & engine starter. It has an automatic charging mode that switches to maintenance mode after it is charged.

    It has something called an aborted charge. The manual just says that if the charge can't be completed 'normally', it will abort.



    Does it say it is temperature compensated? Can you control voltage?
    "Most"battery manufacturing plants suggest termination at around 120°F
    If you say no to the two questions at above 100°F, I would suggest not charging.
  • smkettner wrote:
    Typical converter at 13.6 volts is fine. Otherwise what are you charging with?
    Just because it is 100 out does not mean your battery is over 85 yet.


    It's a Duralast DL-50-CEC 50 amp Battery charger & engine starter. It has an automatic charging mode that switches to maintenance mode after it is charged.

    It has something called an aborted charge. The manual just says that if the charge can't be completed 'normally', it will abort.
  • Typical converter at 13.6 volts is fine. Otherwise what are you charging with?
    Just because it is 100 out does not mean your battery is over 85 yet.
  • Charging voltage needs to be reduced as temperature rises.

    Battery temperature should not be allowed to exceed 50 C (122 f).

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,373 PostsLatest Activity: Apr 02, 2026