nicam wrote:

"he just had that look people have when they are trying to work things out in their head and nodded"
I get that a lot!!!
At 2.6 amps draw from the battery, that is only 32 watts of power being consumed by the entire system.
So the TV may be rated at 40 watts, but only if you have the picture turned up to maximum brightness and have full volume set, but under normal usage, it obviously takes a lot less power.
A good result for you because; 1) it works, and 2 ) your battery will last much longer between charges

I must admit that we did not have the aerial plugged in when we did the initial check so after reading the above I rechecked it as he had leant my his clam on meter. The second check with the aerial plugged in gave the same readings. Don't make old people mad.
We don't like being old in the first place,
so it doesn't take much to us off.

Richard