Battery check

[Rodallg]

Checked my chassis battery 1 week ago and it was at 12.17 vdc (with the neg. lead disconnected), today I checked and it was at 11.88. Is this an expected drop? Battery is 2.5 years old. I checked the amp draw and it measured 0.10 on the 10amp scale. I brought it home and put it on a charger and try measuring it again. Last resort was to take it somewhere and have it tested.
Any thoughts?

[Rodallg]

A)What do you have running? Its the chassis battery, the only thing on that I know of is the light for the chassis disconnect.
B)When was the last time you checked the water? I checked the water after taking it out, water is full.
C)Do this for a real check. Leave all the lights on, then when the batteries are dead.

Check the water in both, top off to the marker with distilled new water. Then remove the cables on one, recharge it at 2 amps.
(this may take 24 hours)per battery

I need to replace the chassis disconnect relay since I don't believe it is disconnecting. I'm doing the battery checks since it is dropping off after a week or so. I believe that even if the relay wasn't disconnecting it would draw the battery down as fast as it is. I'm suspecting the battery.

[janechucknicode]

A)What do you have running?
B)When was the last time you checked the water?
C)Do this for a real check. Leave all the lights on, then when the batteries are dead.

Check the water in both, top off to the marker with distilled new water. Then remove the cables on one, recharge it at 2 amps.
(this may take 24 hours)per battery

While charging leave your charger above the batteries as gasses go down during charging.
Let it sit and do the other the same way. Wear gloves and safety glasses and use the normal safe procedures for this.

Reason for this is to RE-establish the charge in the batteries.
Make sure you wire brush all fittings and clean the cable connections .
You should be good to go.

Good luck