Galactic Greyhound
Registered user
Noted you have tried two other batteries and they have also been flat in the morning.
Your battery is likely to be around 16 Ah (Ampere- hour) capacity.
This means, that from fully charged, it needs to drain at 16/8 = 2 Amps per hour to be flat in the morning after 8 hours.
You measured a drain of around 0.15 Amps.
This would take 16/0.15 = 106 hours to drain a fully charged battery.
The 0.15 Amp drain is therefore NOT the problem.
Are you sure that all the batteries you used are good and not self-discharging overnight due to internal shorting?
If the battery is draining internally you will not measure any discharge current from this as it is happening inside the battery.
Otherwise, if it is an external fault causing the drain you should be able to measure it by putting an Ammeter in SERIES (on the AMPS DC Range) with the battery earth lead.
You are looking for a drain of around 2 Amps for an overnight discharge.
Are you using an Alarm overnight?
Your battery is likely to be around 16 Ah (Ampere- hour) capacity.
This means, that from fully charged, it needs to drain at 16/8 = 2 Amps per hour to be flat in the morning after 8 hours.
You measured a drain of around 0.15 Amps.
This would take 16/0.15 = 106 hours to drain a fully charged battery.
The 0.15 Amp drain is therefore NOT the problem.
Are you sure that all the batteries you used are good and not self-discharging overnight due to internal shorting?
If the battery is draining internally you will not measure any discharge current from this as it is happening inside the battery.
Otherwise, if it is an external fault causing the drain you should be able to measure it by putting an Ammeter in SERIES (on the AMPS DC Range) with the battery earth lead.
You are looking for a drain of around 2 Amps for an overnight discharge.
Are you using an Alarm overnight?
