 |
03-20-2025, 11:55 AM
|
#1
|
Senior Member
Join Date: Jan 2024
Location: Alberta
Posts: 115
|
Why Does Victron Battery Charger Weaken?
Hello all you wonderfully helpful people!
My Victron Battery Charger has always charged my lithium battery at about 13.8 v (never more, despite some insisting it should be up around 14.4).
Today, for the first time in ten months, it is charging at under 13v.
Why?
|
|
|
 |
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
03-20-2025, 01:43 PM
|
#2
|
Senior Member
Join Date: Nov 2015
Posts: 28,595
|
Which model do you have?
Does it indicate:
*Output voltage (13VDC....14VDC)
*Charge current (AMPS)
*Battery Charge Mode
*State of Charge (Bulk, Absorption, Storage)
Have you taken a voltage measurement at the batteries using a Voltmeter?
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
|
|
|
03-21-2025, 05:50 AM
|
#3
|
Senior Member
Join Date: Jul 2023
Location: East TN
Posts: 295
|
Victron charger model ?
Battery model / capacity / chemistry ?
Do you have the Victron app loaded on your phone / tablet so you can see the actual setup of the charger?
|
|
|
03-21-2025, 08:08 AM
|
#4
|
Senior Member
Join Date: Jan 2024
Location: Alberta
Posts: 115
|
Quote:
Originally Posted by Old-Biscuit
Which model do you have?
Does it indicate:
*Output voltage (13VDC....14VDC)
*Charge current (AMPS)
*Battery Charge Mode
*State of Charge (Bulk, Absorption, Storage)
Have you taken a voltage measurement at the batteries using a Voltmeter?
|
I don't know the exact model. The rv tech installed it sight unseen (to me). He didn't provide me any packaging or user guide. It does include the items you listed, and "no" to your final question.
However, it has corrected itself ans everything's fine now. It's back to its usual charging voltage.
Thanks for replying - I appreciate your help. 😊
|
|
|
03-21-2025, 08:09 AM
|
#5
|
Senior Member
Join Date: Jan 2024
Location: Alberta
Posts: 115
|
Quote:
Originally Posted by B-Man
Victron charger model ?
Battery model / capacity / chemistry ?
Do you have the Victron app loaded on your phone / tablet so you can see the actual setup of the charger?
|
It's all good now - please see my reply to Old Biscut 👌 - and thanks!
|
|
|
03-27-2025, 08:56 PM
|
#6
|
Senior Member
Join Date: Nov 2018
Location: Beaver Dam, Wisconsin
Posts: 5,978
|
First, you can get a manual for your Victron from the Victron website. You will need get the complete model number from the label on the Victron.
Second, the Victron is probably not "weakening" and it has probably been working "normally" all along.
Voltage drops when the current the batteries are drawing plus house consumption exceeds the Victron capacity. This is absolutely normal and necessary.
Third, the Victron output voltage varies according to its microprocessor controls. It may never supply 14.4 volts if proper conditions are not met.
Lead acid batteries may be charged at 14.4 volts if they are deeply discharged and then only for a few hours. Longer decreases life. The Victron will not supply 14.4 volts when batteries have been charging for a long time.
The Victorn will also not supply 14.4 volts when the batteries are deeply discharged, if the current demand exceeds the Victron capacity.
It may seem complicated. Don't worry. Be happy!
__________________
Paul Bristol - In the Wind. 
2025 Airstream Trade Wind
2024 Ford Expedition Max
|
|
|
03-28-2025, 06:48 AM
|
#7
|
Senior Member
Join Date: Jan 2024
Location: Alberta
Posts: 115
|
Quote:
Originally Posted by Persistent
First, you can get a manual for your Victron from the Victron website. You will need get the complete model number from the label on the Victron.
Second, the Victron is probably not "weakening" and it has probably been working "normally" all along.
Voltage drops when the current the batteries are drawing plus house consumption exceeds the Victron capacity. This is absolutely normal and necessary.
Third, the Victron output voltage varies according to its microprocessor controls. It may never supply 14.4 volts if proper conditions are not met.
Lead acid batteries may be charged at 14.4 volts if they are deeply discharged and then only for a few hours. Longer decreases life. The Victron will not supply 14.4 volts when batteries have been charging for a long time.
The Victorn will also not supply 14.4 volts when the batteries are deeply discharged, if the current demand exceeds the Victron capacity.
It may seem complicated. Don't worry. Be happy!
|
Thank you so much!
|
|
|
 |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|