Xbox and TV in my van - how much solar to replenish batteries?

[Joe Sheehan]

Here's one if people are bored / understand electricity better than I do (which won't be hard)

I've got a 110ah leisure battery and a power inverter for my van so I can run my Xbox and TV in there of an evening but I'm looking for a solar panel to top up the battery through the day. Will this 100w solar panel be enough to replenish the power I use?

TV is 35ish watts at 12v (figured id get a 12v TV so it's less consumption)

Xbox one S is about 45 watts, but it's at 240v through an inverter. (Not sure if this makes a difference to consumption)

I'll be playing for no more than a couple of hours each week night and the van is always parked outside. So even if the leisure battery was only topped up to 10% less than the day before I would be ok as it has all weekend to recharge to 100%.

Other options are a split charge system from the vans alternator, but that's more hassle and I figured I may learn something from asking about it here first.

Cheers!

[manuel]

Very simply, your battery is 12x110 watt/hrs 

1.32kWH... if your panel is 100w or 0.1kW then it would take 13.2 hours to charge the battery fully (if it’s chucking out at 100% all the time) 

Tv 0.035kWH Xbox roughly 0.05kWH with a crappy inverter. 

 

So the load total is .085kWH and the charging is 0.1kWH. So good chance that’ll be fine?

Or something.