Charging Ebikes off grid.

[AussieMick]

My wife and I both have Ebikes which we would like to use when away.
We spend most trips away in the van off grid.
My bike has a 625 wh battery and my wife's battery is 500wh.
In my van I have a 150ah lifepo4 battery which copes with extended days off grid as I have a permanent 150w solar panel on the roof and 2 solar blankets I can use if necessary.
Does anybody have
experience of travelling with Ebikes and keeping them charged.
My options seem to be fitting an appropriate inverter to my van or getting a stand alone power station with solar charging so I don't flatten my leisure battery as I need to keep fridge etc running indefinitely.
Any thoughts which option is more practical. Thanks.

 

[CAB]

What wattage are the chargers?

Do you need full charge every day, alternate days, or once a week?

How much solar do you get a day? Can you refill the lithium daily?

Not done this myself, but these questions may help the discussion.

150ah times 12 is 1800wh, but you wouldn't want to run it down to zero.

 

[AussieMick]

Thanks for replying.
Solar keeps my leisure battery topped up each day with normal usage of fridge, lighting, phone charging etc but charging Ebikes would pull a fair amount out of the battery.
One charger is 4A at 240v and the other is 2A at 240v.
Ideally I would like to charge bikes up as needed each day.
Most towns in Australia have a caravan park, even remote places so thinking it might be easier to stay the night at a caravan park with EHU when bikes need charging and have a shower as well.
Still trying to work out what is more practical as bikes wouldn't need fully charging everyday.

 

[soldas]

Personally I'd have an external power station (Jackery, ecoflow etc) that can output 240v.

Charge the bikes off that and charge the power station off a stand alone solar panel, EHU or trickle it off your leisure via 12v.

That's my set up for my Ebike/van.

 

[TonyM]

One charger is 4A at 240v and the other is 2A at 240v.

Check the listed output figures. 4A at 240v is 960W, which would give a charge rate greater than 1C for your 625Wh battery. 4W is probably the 110v rate - most chargers work on anything from 110v to 240v. The output figures will be a better guide - something like 8A at 40V. That would tell us what size inverter you might need.

If you used half your bikes' battery capacity every day, you would need 875Wh per day just for the bikes. Australia gets more sun that the UK (depending on whereabouts you are), but I doubt you get more than 1000-1200Wh per day. But if you start with a full battery, you should get several days before you need an overnight on EHU. Do you tend to stay parked up in one place, or drive every day or so? Does your leisure battery get charged from the alternator or starter battery while driving?