EMS model 900 issues (electrical gremlin)
Seems that I have an electrical Gremlin. I have kept my RV plugged up to 120 v power ( extension cord) all winter to keep the batteries charged. I started hearing my LP detector beeping. It was bee...
Forum Discussion
I think that the first thing you should do is physically disconnect the batteries. TAKE A PHOTO OF THE CABLING FIRST then follow Sam Spade's advice.
If unsure how to check the batteries:
Check fluid level. IF below the plates in any cell you have damaged the battery. How much depends on how far below the plates.
Add just enough distilled water to cover the plates and just a bit more. (not FULL--just enough to be able to suck electrolyte into the hydrometer for an accurate reading) then charge with and external battery charger.
Check the SG in each cell.
After a rest of several hours check battery voltage. If not at above 12.6 you have not charged them long enough or they are dead/dammaged.
Clean all battery terminals and ends, including the battery ground connection to the chassis. This step is often missed.
If unsure how to check the batteries:
Check fluid level. IF below the plates in any cell you have damaged the battery. How much depends on how far below the plates.
Add just enough distilled water to cover the plates and just a bit more. (not FULL--just enough to be able to suck electrolyte into the hydrometer for an accurate reading) then charge with and external battery charger.
Check the SG in each cell.
After a rest of several hours check battery voltage. If not at above 12.6 you have not charged them long enough or they are dead/dammaged.
Clean all battery terminals and ends, including the battery ground connection to the chassis. This step is often missed.
