Just had a thought about this...could I use it to power the Maypole 12v battery charger?  Would save a huge amount of hassle with the extension lead if so. It's a 4 amp charger, though generally will only use 1-2a (checks voltage increase every 20 mins, and increases the amps if too small an increase is noted).

If my maths is right, the charger would take about 50w at 3amps?  So several hours worth.  

 

I've also been considering a solar battery charger to keep plugged in permanently over summer, placed on the south facing screen.  But there seems to be so many options and a lot are reviewed as using more battery charge than they replace!

12V, 4A is 48W. There will be some loss on the unit itself, there should be an AC input maximum current written on the back of the unit.

But even if you said 60W from the AC side, it should still be able to run it for a while.

Does the Anker have any DC outputs? Seems a shame to go from the DC lithium battery, to AC and back to DC again, lol.

Not sure if it has any DC outputs but presumably the Maypole is only AC anyway?

3 minutes ago, TomsFocus said:

Not sure if it has any DC outputs but presumably the Maypole is only AC anyway?

Yeah that’s true. Probably best not to allow it to just stick a load of current directly in to your battery without the smart charger controlling it 😅

In case it’s not been realised.  At the start there was a suggestion the tv takes 19volt ac.  I think that’s wrong, I think it’s 19volt dc. 

22 hours ago, alexp999 said:

Yeah that’s true. Probably best not to allow it to just stick a load of current directly in to your battery without the smart charger controlling it 😅

Truer it today...depleted the whole thing somewhere between 5-5.5 hours.  Must take more than we thought...but it does also have a fan which must use some power when sat in a hot car!

Got the multimeter out to check battery charge...it's now sitting at 12.5v so that should be good enough for a start...or another weeks parked!  Both Focus's are on 11.6v...but that seems like a job for another day.

Now plugged the Anker in on cheap rate...suggests 6 hours at 60w.  So 360Wh.  21.6p per unit.  So just under 8p for that charge.