how do you fit a sterling battry to battery charger

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hi does anyone know how to fit a sterling battery to battery charger the 50 amp one.
it is to go in a 1994 hymer b544 fiat 2.5 td. I purchased it second hand with no instructions. i did not realise
how big the unit is so it will not fit under the bonnet. i have 2 leisure batteries one under the passenger side step
the other under the nearside rear bench seat. it will fit under the rear seat next to the second lesure battery.
i dont know where to connect it in the battery sequence. Also can you do away with the relay that stops the engine battery
going flat. and how do you select which type of battery it is to charge. thanks
 
The important thing is to make sure you have the correct cable thickness connecting it, I think its 25mm or 35mm squared depending on the length of run, soldered connections and as close as possible to the batterys, excellent chargers
 
No probs, I`m not sure about the relay question, but I would think that it needs to be active as it checks to see if the engine battery is up to 13 volts before it charges the leisure one, and as you can see by the wiring diagram it gets connected to the engine battery and gets it power feed from it,,, any question just ask
 
And you select the battery type on the top of the charger, select the leisure type and not the engine type
 
Another thing, it was the 120amp one I fitted so I used 50mm squared cable, and I was advised to upgrade the alternator to engine battery cable to 50mm too because it was quite a thin cable so maybe check that too.
 
remember you must disconnect the current dual charge relay.
 
eddyt said:
is that the relay that stops the engine battery going flat when the lesure battery is depleted
Click to expand...

For the leisure batteries to charge from the alternator you will normally have a relay that connects the starter battery to the leisure battery whilst the engine is running. Once the voltage drops or the engine is switched off the relay should disconnect the batteries.
 
i have not got the alt and battery temperature sensors. Will it still work without them to make sure
its ok then i can order them up
 
eddyt said:
is that the relay that stops the engine battery going flat when the lesure battery is depleted
Click to expand...

See what he comes back with, but I think he means the relay that swops the charge over to the leisure battery once the engine battery is fully charged, otherwise the alternator will be charging the leisure battery along with the sterling charger, which would cause a loop or conflict in some way. The way I set mine up was to add extra batteries, 4x110AMP ones, which run a 2KW inverter, for sky, tv, hairdryer toaster ect, I then have the 4x110 batts connected to the single leisure battery via an isolator switch, the type used in rally cars to isolate the battery in a crash, I only connect the extra batteries to the leisure ones when stationary, but so far I have never needed to, but connected that way the Elektroblock charging system is totally isolated from the sterling charger.
 
Johnnygm7lsi said:
See what he comes back with, but I think he means the relay that swops the charge over to the leisure battery once the engine battery is fully charged, otherwise the alternator will be charging the leisure battery along with the sterling charger, which would cause a loop or conflict in some way. The way I set mine up was to add extra batteries, 4x110AMP ones, which run a 2KW inverter, for sky, tv, hairdryer toaster ect, I then have the 4x110 batts connected to the single leisure battery via an isolator switch, the type used in rally cars to isolate the battery in a crash, I only connect the extra batteries to the leisure ones when stationary, but so far I have never needed to, but connected that way the Elektroblock charging system is totally isolated from the sterling charger.
Click to expand...

it has a elektroblock as well but when connected to 240v it does not charge the engine battery. Just the lesure
batterry but seems a bit slow to charge them
 
eddyt said:
i have not got the alt and battery temperature sensors. Will it still work without them to make sure
its ok then i can order them up
Click to expand...

Pretty sure they will work ok without them, I have the battery sensor but not the alternator sensor, they are just a safety precaution. If you give Sterling a phone, they are very helpful, even if you didn't buy from them, as they prefer to sell via other outlets but have a good technical backup.
01905 771771 Ask to speak to Will rather than Mr Sterling, he`s a nice guy and very helpful. and the Sterling sp shop is the best prices for extras
 
Last edited by a moderator:
eddyt said:
it has a elektroblock as well but when connected to 240v it does not charge the engine battery. Just the lesure
batterry but seems a bit slow to charge them
Click to expand...

I have an Adria Izol, with the Elektroblock EBL226 and it charges the engine battery as well, well I`m pretty sure it does as I flattened the engine battery messing with the auto sky dish for days and it charged it up on hookup at the house
 
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