New battery drain! (1 Viewer)

Aug 8, 2019
390
557
Chichester
Funster No
63,081
MH
Autosleeper Broadway
Exp
Since 2019
Just installed a new Halfords HBL700 battery to my 2014 Broadway with a Sergeant 328s controller. It shows a battery drain of 0.1A to 0.2A constant drain. I've tried removing all 12v fuses to isolate all 12v supplies but the Sargeant panel still shows the drain. With a multimeter in series with the battery a drain of 0.8A drain shows( I've tried 2 different meters so I know that 0.8 is accurate)
Any suggestions would be appreciated.
The old battery didn't show any drain, and the new battery voltage is 12.9v
 

Lenny HB

LIFE MEMBER
Oct 18, 2007
53,663
150,846
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
0.1 to 0.3 amps is normal but 0.8 amps is high and suggests something switched on drawing current.
Do you have solar as I have seen a faulty solar regulator taking an amp out of the battery when there is not much sun.
 
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Brianmor
Aug 8, 2019
390
557
Chichester
Funster No
63,081
MH
Autosleeper Broadway
Exp
Since 2019
Yes I've got solar but I was getting the 0.8 drain this afternoon, so I waited till it was dusk and got the same reading. Why would cause the normal reading of .1 to .3?
 
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John H.

Free Member
Apr 2, 2021
181
104
Funster No
80,147
MH
Hymer 578
Exp
A long time
Fridge?

Needs 12v for the control board even if running on gas or EHU.

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Brianmor
Aug 8, 2019
390
557
Chichester
Funster No
63,081
MH
Autosleeper Broadway
Exp
Since 2019
Fridge turned off and all mains MCB and RCD turned off. The Sargeant cover isn't easily removable without dismantling wardrobe shelves, installers need talking to about that.
 
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Brianmor
Aug 8, 2019
390
557
Chichester
Funster No
63,081
MH
Autosleeper Broadway
Exp
Since 2019
Also why would the old but serviceable battery not show the same symptoms as the new battery
 
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Oct 10, 2018
2,014
1,140
Bracklesham Bay, West Sussex
Funster No
56,646
MH
PVC
Exp
Since 2005
If it is the leisure battery you are checking have you a battery master fitted (possibly remotely), if so, that may account for the reading you are getting, the other thing that may be worth checking would be the tv ariel booster , if fitted.
 
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Brianmor
Aug 8, 2019
390
557
Chichester
Funster No
63,081
MH
Autosleeper Broadway
Exp
Since 2019
No battery master, and aerial booster turned off, but thanks for the suggestions

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