Magnum Energy - Not Charging Batteries
Posted 02-12-2021 at 10:38 PM by HARVY
Hi,
I have a 2019 Vista LX 35F, with a Magnum Energy MS2000 Inverter/Charger and ME-MR Remote Controller (I have a ME-RC50 on order, but that's not the point of my post).
I have recently been having trouble with dead/low charged coach batteries. After investigating, I think here's the most important symptom: The ME-MR typically reads "FLOAT, 14V (approx), 0A". This would be fine, but my four coach batteries are nowhere near 14V. When I put my meter on any of the batteries, they are actually around 10V. The only way I can push a charge into the coach batteries is if I start the motorhome main engine, and use the alternator to charge them. (BTW, I tried cleaning the coach battery terminals and topping off acid levels with distilled water - didn't help.)
The above situation is happening when I am connected to shore power right now, but also happened recently while off the grid and trying to charge via the generator.
If I interpret the situation correctly, the controller thinks the batteries are fully charged, so it is not signaling the Inverter/Charger to charge the batteries, though they are actually low. Doesn't seem to matter if AC is coming from shore or generator - neither produce a charge to the batteries.
Has anyone else experienced this? Am I interpreting this correctly? Any suggestions on how to correct? Any help would be appreciated.
Thanks!
I have a 2019 Vista LX 35F, with a Magnum Energy MS2000 Inverter/Charger and ME-MR Remote Controller (I have a ME-RC50 on order, but that's not the point of my post).
I have recently been having trouble with dead/low charged coach batteries. After investigating, I think here's the most important symptom: The ME-MR typically reads "FLOAT, 14V (approx), 0A". This would be fine, but my four coach batteries are nowhere near 14V. When I put my meter on any of the batteries, they are actually around 10V. The only way I can push a charge into the coach batteries is if I start the motorhome main engine, and use the alternator to charge them. (BTW, I tried cleaning the coach battery terminals and topping off acid levels with distilled water - didn't help.)
The above situation is happening when I am connected to shore power right now, but also happened recently while off the grid and trying to charge via the generator.
If I interpret the situation correctly, the controller thinks the batteries are fully charged, so it is not signaling the Inverter/Charger to charge the batteries, though they are actually low. Doesn't seem to matter if AC is coming from shore or generator - neither produce a charge to the batteries.
Has anyone else experienced this? Am I interpreting this correctly? Any suggestions on how to correct? Any help would be appreciated.
Thanks!
Total Comments 2
Comments
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My 2009 Winnebago View alternator not working.
New alternator and battery changed, no help.
Anybody familiar with the Dodge Sprinter 3500?Posted 03-27-2021 at 09:12 PM by trainfan 
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Additional: When purchased in 2013 the alternator only put out 13 volts, just enough to keep going down the road, but not enough to build the battery. We would always charge up on overnight stays. Never a problem, although a chore.
Lately, and after the new alternator, it only charges about 12.7 volts and I get a battery warning light.Posted 03-27-2021 at 09:16 PM by trainfan
