New 6 volt batteries, problem?
Hey everyone, Hoping for some input on the new battery situation. We have a 2015 class C, about one year old next month. I’ve replaced the converter in my WFCO 8955 with a Progressive Dynamics 9270...
Forum Discussion
ryanPSD wrote:
I saw 13.2 at the batteries while the engine is running. This is, all, however immediate after being plugged in for 3 days into the PD 9270.
Bought a hydrometer on the way here. One battery shows 1250-1255. The other is a healthy 1270-1275. The low one also shows .06v lower than the other.
Possible bad battery?
Is every cell in the one battery 1.250-1.255, or just one cell? This is too low. Battery or cell is not charged. You need to charge this battery at 7.5-8.0 Volts until the specific gravity stops rising. If you don't have a "6" volt charger that will do this use the "12" volt charger. You may have to put it in equalise mode to get this. When SG stops rising that cell or cells is charged. If not up to 1.265 or better and is not rising with 15-16 volts (7.5-8 using one battery) then that cell has had it. Get the replacements offered by your dealer. Best to do this charging with ALL LOADS off the battery. Also, watch the cells for electrolyte level.
When charging or equalising, there should be enough electolyte to cover the plates and keep them covered. DO NOT over fill--the fast gassing can cause the electrolyte to spill over. Once the batteries are fully charged then top up the electrolyte with distilled water to just below the notch.
If the weak cell(s) come up to an acceptable level and stay within the range of the other cells after that then the battery is likely OK, though you should keep an eye on its SG. If it always falls much lower than the others, replace it.
