RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×

Go Back   Thor Forums > Thor Tech Forums > Modifications and Updates
Click Here to Login
Thread Tools Display Modes
Old 07-01-2020, 03:30 PM   #21
Brand: Thor Motor Coach
Model: Axis 24.2
State: California
Posts: 75
THOR #18202
Originally Posted by Bill in Redlands View Post
Battleborn's website suggests the BIM is for banks of three or more batteries, I have two. I am waiting for their response to verify the BIM is appropriate for me. I also asked for wiring information but expect to have a similar response.
This is an update for those that might be interested in what I heard from Battleborn.

Initially, Battleborn asked me for the model and amperage of the RV alternator. I did not find it anywhere in my documentation and spent a fair amount of time digging through the engine bay trying to get a look at a data plate on the alternator, with no success. Next, I came back to this web site, searched for any clues and a found a discussion several years ago on topic - with no conclusion but the best "guess" was that Thor bought identical cutaway chassis and unless you asked the dealer to upgrade the alternator, you probably have the basic 120 amp model and maybe a 155 amp upgrade but not likely the top of the line 225 amp alternator.

Here is what I heard back from Battleborn after I shared that I did not know the specific alternator.

"Hi Bill,

The reason I ask is because we recommend only charging the Battle Born batteries with amperage that is 50% of the battery capacity. This would be 100 amps for 2 batteries in parallel.

If you have a 120 or 155 amp alternator, you would be able to use the LiBIM because the amperage reaching the batteries will be close to or less than 100 amps. With a 225 amp alternator, I recommend using a DC to DC charger to limit the amperage.

The LiBIM will utilize all leftover amperage from the alternator, but it will operate on a duty cycle of 15 min on, 20 min off; in order to give the alternator a break.

Bill in Redlands is offline   Reply With Quote

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


This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.

All times are GMT. The time now is 05:32 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2