Thanks for your replies everyone .
Here's an outlier.
I have 40m reinforced pole hose connected to 60m if old microbore on my Claber hand reel. Light as a feather.
Why people use microbore let alone minibore is beyond me.
But then I don't use a pump controller either.
And I use an immersion heater for warmth.

How is the immersion heating fitted to your tank, is it a separate fitting or on the lid of the tank, got any pics or dealers that sell them?
Actually , no need , I’ve just looked at water heaters in a few websites, far too much money for me, 3 grand plus vat 😧
An immersion heater plus fittings is a couple of hundred quid. Should be fitted as close to the bottom of the tank as possible using a mechanical flange.
That sounds a much better price, have either of you got a picture of how they’ve been fitted ?
The reason I whinged about the ones for sale on a few suppliers, I’m not doing as much work now, after I had that fall just about 41/2 years ago ,and had to have half my left skull removed to stop the inside bleed . So during my off for sickness , a lot of customers got a new wc . Enough of that it’s been on before during my sickness , but’m back to work which I enjoy doing .
If you’ve got a plumber mate that will be your best bet if you’re not confident on fitting it yourself. If it’s a flat tank it’s easy to reach down to the bottom, if it’s an upright tank you would probably need to lower the mechanical flange on a wire or similar. You fit the flange to the tank first then the immersion element screws into the flange.
TBH I don’t think I’ll bother with a water heater, but I am seriously thinking of an electric hose reel, the local company have them for about 50 quid cheaper than other companies , so I’m just going to ask the window cleaner who does our estate to have a look at his system, then I will wait and probably get one in new year. The van is already fitted with a relay system., it charges the battery although I’m thinking of getting a more powerful one.
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If you have a standard lead acid leisure battery, the battery will determine how much charge it will accept. So for example, your battery is 90% charged, I doubt very much you will get any more than 4 or 5 amps into your battery whether you have a 60 amp battery to battery charger of a 140 amp split charge relay. The fuller the charge in a leisure battery is, the higher the resistance and the lower the rate of charge. My van is a 62 plate Peugeot Boxer and have run both a b2b charger & an SCR on the same van and didn't notice any difference in charge rate.
So for us, the run home taking 15 minutes, didn't put much of a charge back into the battery. (At 4 amps this will only add 1 amps worth of charge.) I put the 230v smart charger on every night to completely charge the battery.
However, changing to a lithium phosphate battery changed that, as the battery will accept a higher charge rate. My 105 amp lithium battery is charged at 30 amps until it's virtually full. I can only use a b2b charger to charge this battery. I often switched my charger off to let the battery capacity reduce to around 30% before recharging.