Results for "overcharging"

Solar Batteries Medium 2-4 hours 201 👍 0

RC7-GS Inverter AGM Battery Settings: Complete Setup Guide

Replaced my 105Ah AGM battery and now my RC7-GS inverter charger is completely rejecting it like this capacity doesn't exist in its programming.

The charging settings only go from 125Ah up to 1000Ah, with an 'auto' option that supposedly 'learns' my battery but resets every time the low voltage cutoff trips (which feels like cheating, honestly). I'm worried about undercharging or cooking my expensive new AGMs if I pick the wrong setting.

Oh, and while we're talking about things that don't work as advertised - the generator auto-start feature might as well be a myth. Can't even manually start the generator from the RC7 panel. At this point I'm wondering if I should have just stuck with my old setup that actually worked! Anyone know what I'm doing wrong here? …more

Read answer

Solar Batteries Medium 2-3 hours 93 👍 0

Stop RV Battery Drain During Storage - Expert Solutions

Planning to store my 2012 Winnebago Tour and there's clear signs of battery drain happening across all six house batteries and two chassis batteries. I'm religious about flipping both the chassis and house disconnect switches before putting her away for storage. Still go out monthly to fire up the generator and top off the batteries.

But here's the thing that's driving me nuts - even with those disconnect switches flipped, my batteries are still going dead! Sometimes I can't even get the engine started and have to hook up a trickle charger just to get things going again. What's the deal? I thought those disconnect switches were supposed to prevent this whole mess. Am I missing something obvious here, or is there more going on that I need to tackle? …more

Read answer

Electrical Medium 30-60 min 92 👍 0

Dead House Batteries on 50 Amp Shore Power: Troubleshooting Guide

Turned on my 2024 Entegra Reatta XL this morning to find the house batteries completely dead again despite being plugged into 50 amp shore power—third time this season and I'm done guessing. New batteries, good connections, power was working fine for days then died completely. Voltmeter shows 12.69V on chassis, 4.7V on house batteries at the BIM.

What's the proper troubleshooting sequence for house batteries not charging on shore power? Need to check converter, breakers, and connections but want to do this systematically. …more

Read answer

Product Ranking 8 compared

Best RV Batteries

4.5 (15,400 reviews)

Solar Batteries Medium 2-3 hours 91 👍 0

Fix Renogy Lithium Battery Charge Percent Differences

Nobody has $200+ laying around for a service call — is there a DIY fix for Renogy lithium batteries showing wildly different charge percentages? About a year ago I installed 3 12v Renogy lithium batteries with a Renogy One Core control panel in my RV. Everything worked beautifully at first - the batteries were supposed to communicate with each other to keep all cells balanced, which is critical for lithium battery health.

Recently though, I've noticed the charge percentages are diverging by as much as 10% between batteries. Even worse, my One Core display keeps going blank and won't show charge percentages until I restart it. I've been through the manuals multiple times but can't find anything about troubleshooting charge percent differences or how to check for software updates on either the batteries or the control panel.

I know this communication/balancing issue could lead to serious problems if not addressed. Has anyone dealt with this before? I'm hoping there's a solution that doesn't involve replacing everything after just one year of use. …more

Read answer

Solar Batteries Medium 4-8 hours 91 👍 0

Lead Acid vs Lithium RV Batteries: Complete Upgrade Guide

Pulled into my favorite boondocking spot with batteries that used to last three days, but now these lead acid units are completely dead after just one night! I've been running two 12V lead acid batteries in my travel trailer and I'm SO tired of dealing with their limitations - slow charging, constant maintenance, and they seem to die at the worst possible times.

I found these Dyness 12V 100Ah LiFePO4 lithium batteries and I'm really hoping they might be the solution I've been looking for. But I'm completely lost when it comes to lithium technology. Will my current converter/charger work with lithium batteries, or am I looking at more upgrades? I keep seeing mentions of something called a BMS - what exactly does that do and why is it important?

I just want a system that actually works reliably and charges properly both when plugged into shore power and while driving. Can someone please tell me if making the switch to these Dyness LiFePO4 batteries is worth it, and what I need to know about compatibility with my existing charging system? …more

Read answer

Solar Batteries Medium 2-3 hours 87 👍 0

How to Install a Lithium Battery Manager Relay in Your RV - Complete Guide

Got my weekend planned to install a lithium battery manager relay in my 1999 Fleetwood American Dream Saturday — what should I have ready beforehand? I understand these relays are crucial for protecting lithium batteries from overcharging by managing the connection to the alternator, but I want to make sure I understand the complete installation process before I start.

I'm looking for detailed information on how these battery manager relays function - specifically how they disconnect the batteries from the alternator when charging isn't needed. More importantly, I need step-by-step guidance on the actual wiring process, including how to properly connect the relay between my alternator/converter and the new lithium battery bank. I'm particularly concerned about getting the fusing right and understanding what control circuits are involved in this setup.

This is a significant electrical modification to my RV's charging system, so I want to ensure I have all the technical details covered before I begin the installation. Any comprehensive guidance on the complete process would be extremely helpful. …more

Read answer

Electrical Medium 1-2 hours for diagnosis 81 👍 0

RV Battery Boiling and Sulfur Smell: Emergency Fix Guide (2024)

The storm that rolled through our campground this weekend left my RV house batteries boiling and releasing that terrifying sulfur smell. After a long road trip, I discovered one of my deep cycle batteries was actually boiling and giving off a strong sulfur smell. This isn't the first time - I've had two different house batteries do this exact same thing over the past year, including one that was less than a year old and another that was about two years old. Both times when I found the boiling battery, my RV wasn't connected to shore power, so I don't think it's related to being plugged in. The sulfur smell was really strong and concerning - is this dangerous? What actually causes a battery to start boiling like this, and what should I do when I find a battery in this condition? I'm worried about safety and also want to prevent this from happening again with my next battery replacement. …more

Read answer

Solar Batteries Medium 2-4 hours 81 👍 0

How to Use DC/DC Charger for RV Chassis Battery Winter Storage Maintenance Guide

Leaving the RV in storage for five months over winter and worried about the chassis battery dying again. Last year I came back to a completely dead battery and had to get a jump. Looking into DC/DC chargers connected to a trickle charger setup but not sure about the wiring. …more

Read answer

Electrical Medium 1-2 hours 77 👍 0

RV Battery Water Loss: Why Some Batteries Boil More Than Others

Walked out to check my four 6-volt Interstate golf cart batteries in my 2015 Tiffin Allegro Open Road 32SA and there's dramatically different water loss happening across them after just 6 months. Visual inspection reveals continuous bubbling activity in three of the four cells in these problematic batteries, while the fourth cell and all cells in the other two batteries appear normal.

The RV remains connected to shore power continuously, maintaining constant charging conditions. Battery testing indicates all batteries are within acceptable parameters and would not qualify for warranty replacement. What diagnostic steps should I perform to identify whether this is a connection issue, internal battery failure, or charging system problem? Specifically, what voltage and specific gravity measurements would indicate internal resistance problems that could cause this differential water consumption pattern? …more

Read answer

Solar Batteries Medium 2-4 hours research and installation 73 👍 0

Lithium Battery Upgrade for 2018 Georgetown RV - Safe?

Thinking about upgrading my 2018 Georgetown from lead acid to lithium batteries but worried about compatibility with the existing converter and charging system. Don't want to spend $2,000 on batteries only to find out I need another $1,500 in electrical upgrades to make them work. …more

Read answer

Solar Batteries Medium 2-4 hours troubleshooting 64 👍 0

Class A RV Tripping GFCI on Hot Days - Solar Inverter Fix

During these scorching summer days, this complete RV newbie is baffled why my Class A's GFCI keeps tripping every few days and I'm totally lost. The RV isn't plugged directly into the GFCI outlet, but there's one on the same circuit that keeps popping.

I'm wondering if my solar inverter might be the culprit since it seems heat-related? Or could this be pointing to a battery that's starting to go bad? Just trying to figure out if this is normal wear and tear or something I need to address before it gets worse. …more

Read answer

Product Ranking 8 compared

Best RV Surge Protectors

4.6 (14,200 reviews)

Electrical Medium 45 minutes 49 👍 0

Gel Battery Absorb Time Settings for Magnum Inverter Setup

Somewhere between realizing I need to configure my Magnum inverter's gel battery absorb time settings and blocking out Saturday for the job, I'm wondering what specs and tools to gather first. I'm upgrading my RV from AGM to gel batteries (specifically the NAPA 8272 model) and I've got a Magnum inverter controller that has a gel battery setting. Someone at the RV dealer mentioned I should double-check something called the 'absorb time' setting to make sure it matches my new batteries, but I'm honestly not sure what that means or how to find the right number. The manual isn't very clear to me. Has anyone else had to mess with these settings when switching to gel batteries? And does anyone happen to know what the absorb time should be for the NAPA 8272? I don't want to damage my expensive new batteries by having the wrong settings. Thanks for any help! …more

Read answer

Loading more Q&A...

You've seen all 12 Q&A articles!