Reply
 
Thread Tools Display Modes
 
Old 02-06-2020, 08:41 PM   #1
Bronze Member
 
Join Date: Jun 2018
Location: New Brunswick
Posts: 30
Default UHG

I have 2019 zion had it out for a drive to charge up my batteries drove for
about 3/4 hour and batteries didn't come up very far from 13.1v to 13.2v
is this normal or should it been higher. Thought I read some where that you should idle around 2500 rpm for a couple of mins before UHG starts charging
is this correct? ( I did not do this) or do I have a problem.
Thanks Joe
__________________

mira1 is offline   Reply With Quote
Old 02-07-2020, 01:49 AM   #2
Platinum Member
 
rowiebowie's Avatar
 
Join Date: Jul 2018
Location: Texas
Posts: 1,294
Default

You might actually be fine and just need a bit longer charging time.

I'm assuming you have the lithium package, in which case 13.1 volts may only be 40-50% charged. Depending on the size of you battery pack and the ouput of your UHG, you may need a bit more time to get 90-100% charged, which should be somewhere between 13.3-13.4 volts.
__________________

rowiebowie is offline   Reply With Quote
Old 02-07-2020, 05:55 PM   #3
Bronze Member
 
Join Date: Jun 2018
Location: New Brunswick
Posts: 30
Default

Thanks for reply I have two banks of 200ah lithium batteries
mira1 is offline   Reply With Quote
Old 02-07-2020, 08:43 PM   #4
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 4,700
Default

2500 rpms are highway speeds. High idle boost the rpms in the range of about 1200 on my Sprinter. It is not needed to charge my batteries. If I turn on the engine at normal idle I get charge input to my house batteries. It is just a good practice to according to MB to do so to burn off DEF particles. That’s why they supply a high idle option. Still the practice is to drive at highway speeds for a time after 2 hours of idling.
__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 02-13-2020, 05:24 PM   #5
Platinum Member
 
Join Date: May 2014
Posts: 104
Default

How cold was it? Your batteries may not have actually started charging until heaters brought batteries up; to temp. Also, lithium draw and voltage readings are not linear: 13.2 is pretty close to "full".
Belzar is offline   Reply With Quote
Old 02-13-2020, 07:42 PM   #6
Platinum Member
 
markopolo's Avatar
 
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 8,065
Default

From halfway down the page here: Marine lithium batteries in operation | Nordkyn Design

Quote:
Voltage reading Assessment Capacity

13.3V or more Near full Over 80%

Above 13.2V Plenty of reserve At least 70%

Below 13.15V Getting on the low side Less than 40%

Below 13.0V Definitely getting low Less than 25%
__________________

__________________
Two bikes on sliding cargo box: https://www.classbforum.com/forums/m...icture206.html & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications: https://www.classbforum.com/forums/f...vana-5864.html
markopolo is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 06:03 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×