CA Traveler
The Western States
Senior Member
Joined: 01/03/2004
View Profile
 Offline
|
X2 with the above. A 2000W inverter will typically have it's own heavy wiring to the battery.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland
Bob
|
stickdog
Somewhere, USA
Senior Member
Joined: 01/27/2002
View Profile
Offline
|
If the battery was as low as you said, 45 minutes on the charger you got no more then a surface charge.
9-11 WE WILL NEVER FORGET!
FULLTIME SINCE 2010
17 DRV MS 36rssb3
17 F350 King Ranch CC DRW 4x4 6.7 4:10 B&W hitch
John
“A good traveler has no fixed plans, and is not intent on arriving.” Lao Tzu
|
MrWizard
Traveling
Moderator
Joined: 06/27/2004
View Profile
Offline
|
Since the inverter works,, the BMS and Battle Born Li Batteries are good, But not fully charged, i suspect there is a Tripped DC breaker in in the battery control center of your coach, this is a box between your batteries and house DC fuse panel, it has relays fuses and DC circuit breakers, it should be labeled, but it could be anywhere inside or outside
I can explain it to you.
But I Can Not understand it for you !
....
Connected using T-Mobile Home internet and Visible Phone service
1997 F53 Bounder 36s
|
rvpep
So Cal
New Member
Joined: 01/10/2015
View Profile
Offline
|
Mr. Wizard, all breakers and fuses in the control center have checked out okay.
However there is no power to the 12vdc side unless on shore power. Coach on
shore power for almost 24 hours with no change. Batteries disconnected now and
charging on small lithium charger. Not trusting my auto detect converter to top
off/equalize the lifepo4's.
|
AllegroD
Outdare
Senior Member
Joined: 05/13/2003
View Profile
|
Do you have a combiner in the bay. While on shore/genny, try a screwdriverquick jump (across chassis/house) to "jump start" your BB BMS.
|
|
|
CA Traveler
The Western States
Senior Member
Joined: 01/03/2004
View Profile
Offline
|
From what you've posted with the inverter working on battery only, the battery is not the problem. Sure it may be partially discharged but more than adequate for say lights. Do you have a voltmeter? if not buy a $20 one from harbor freight and start checking as suggested.
There is more to wiring than breakers and fuses. Like corrosion, bad connectors, broken wires, unknown components, etc.
|
CA Traveler
The Western States
Senior Member
Joined: 01/03/2004
View Profile
Offline
|
BTW Since you think it's the battery install a 12V car battery and post the results.
|
MrWizard
Traveling
Moderator
Joined: 06/27/2004
View Profile
Offline
|
What is the voltage at the batteries, does your system have a low voltage cutout between the battery and the control box? Unusual but possible, what is between converter which is using shore power and working, and your batteries, both sources of 12v power should be connected to the control center, there is a break in the circuit some place, like possibly the battery disconnect relay, these latch in position wether on or off, it's in the off position either its stuck, or the on off switch is not supplying the on signal, that relay Should be in the control center, if it's not, you need to find it
|
rvpep
So Cal
New Member
Joined: 01/10/2015
View Profile
Offline
|
Found the culprit. It was a 20A Fuse in the inverter compartment, one of the first places we checked. We assumed it was a fuse for the inverter and moved to the underside to test all breakers ,big fuses and battery disconnect switch. Oh well, live and learn. The bottom line is I need to know where my battery Amps are before I run something like a Kuerig. (I hear Kuerig is german for Rig Killer). I will follow up and try to determine exactly what caused this and report back. Victron bmv712 and Progressive Dynamics Converter will be coming soon.Thanks for all your help.
|
MrWizard
Traveling
Moderator
Joined: 06/27/2004
View Profile
Offline
|
Finding the problem is good news, 20 amps sounds small for all the DC power in the coach,
|
|
|
