Is my TV sucking all my juice?

mossypossy

Guest
Fully charged 3 battery bank (new) 3x130ah
Avtex TV on for three hours.

Red light on Truma panel starts flashing indicating low voltage. Motorhome battery charge display half way into discharge zone.

Red light goes out if TV switched off.

Something seems wrong.
 
My 18'' Avtex takes around 1.7A when watching TV according to the BM1 battery monitor.With a large leisure battery capacity like you have it should barely scratch the surface.There is either some other 12v appliance taking a lot of current or you have a faulty leisure battery.(The TV could be faulty as well).
 
Divide your watts by your volts which will give you the appliance amps consumption. Also how you have pos/neg connections to your batteries can have an impact - they should be connected in parrallel
 
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Checked actual consumption on my TV ... 0.9A when on (around 12W)
Your battery bank is not dissimilar to mine (you have 390Ah, I have 440Ah) and overnight over a 7 hour period I lose around 1.7% SOC with a constant consumption between 18W and 57W (Fridge, Inverter, Router, Raspberry Pi).

You definately have something with a major draw/drain going on. If it WERE the TV doing it, I can't imagine it would still be working! Is it getting very hot?

You say the battery bank is new ... I think that is where you need to be looking TBH. Something weird happening just after something replaced/fitted, check the new stuff first ;)
 
mossypossy said:
Fully charged 3 battery bank (new) 3x130ah
Avtex TV on for three hours.

Red light on Truma panel starts flashing indicating low voltage. Motorhome battery charge display half way into discharge zone.

Red light goes out if TV switched off.

Something seems wrong.
Click to expand...

My guess,

Red light goes out if TV switched off so assuming the tv is in reasonable working order then the fault is with the battery bank.

Try using just one battery at a time to see if one battery is weaker than the others.

:wave:
 
harrow said:
My guess,

Red light goes out if TV switched off so assuming the tv is in reasonable working order then the fault is with the battery bank.

Try using just one battery at a time to see if one battery is weaker than the others.

:wave:
Click to expand...

Ta. Something to look at. All three are identical ages and type.
 
I have an 18” Avtex tv too but only have one 75 amp leisure battery with 100 watt solar and can watch the tv for hours and it barely touches the battery power
 
Do you have solar panels on the van,if so one may have a diode down draining the batterys over night.
 
mossypossy said:
One large panel but know not the age or rating.
Click to expand...

Disconnect it tonight before the regulator if batts are charged,then if still charged in morning the diode is at fault,if not trouble els where,dud battery or something switched on,faulty panel etc.
 
Van on storage site atm.
Will pop over and do some readings tomorrow.
 
trevskoda said:
Do you have solar panels on the van,if so one may have a diode down draining the batterys over night.
Click to expand...
I have just given the same advice to Pat (iampatman) and although it is rare it does happen, the TV is a drain so if something else is a bigger drain and causing the low battery alarm to go off then switching the TV off might be just enough to stop the alarm, it doesn't automatically point to the TV
 
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