New owner battery install question.
Installing a battery in our travel trailer and I'm not sure I've hooked it up correctly. After install the lights work and radio work but none of the ac outlets are working? I'm not sure if this is ...
Forum Discussion
aftermath wrote:
And, now that I think about it. Why do they call them 12 volt batteries if at 12 volts they are already at 50% discharge? They should call them 12.8 volt batteries. Of course everyone knows that a 12 volt battery is not actually 12 volts. It starts at 12.8 then goes down to 12 and then hits "empty" at 10.8 Everyone knows this, don't they?
What an absurd argument. If that were the case then a 9 volt battery would have to be called a ~ 9.5 volt battery or a 1.5 volt a ~ 1.6 volt and each would be 50% depleted at half those values, which of course is not the case. :R And a 12 volt battery is considered 100% drawn down @ 10.5 volts. As for what voltage a deep cycle battery is fully charged that depends on the type of battery it is - flooded, AGM, GEL, etc - which are not all "full" @ 12.8 volts. It's not that complicated. ;)
