Battleborn Battery Safety Issue

[mossemi]

2 hours ago, CRM said:

And is it me, or is the bolt on the Battleborn battery that he says is too small and the equivalent of a 6 awg cable look to be the same size used on the Lithionics battery main connections?

CRM get a gold star for his observation, because I can confirm that the terminal bolts on my 3 100 amp hour BB's are 8mm or 5/16".  My 320 amp hour Lithionic battery has the same 8mm or 5/16" terminal bolts.

Mossey

[jd1923]

4 hours ago, mossemi said:

CRM get a gold star for his observation, because I can confirm that the terminal bolts on my 3 100 amp hour BB's are 8mm or 5/16".  My 320 amp hour Lithionic battery has the same 8mm or 5/16" terminal bolts. Mossey

Mossey, you have both BB and Lithionic batteries?

8mm is pretty much standard, same on Epoch.

[Steve and MA]

It looks like the issue is the bolt inside the BB that conducts (and resists) all of the current. A plastic spacer separating the internal buss bar from the terminal prevents direct connection of the two.

The external terminal connections on the BB as well as the Lithionics do not rely on the bolts as part of the circuit. For both designs, the battery cables are held directly against the battery terminals when properly connected.  There's much more surface area contact between them than just an 8mm bolt. 

Edited Friday at 10:23 PM by Steve and MA
Added picture of BB internal terminal bolted to buss bar

[mossemi]

1 hour ago, jd1923 said:

5 hours ago, mossemi said:

 

Mossey, you have both BB and Lithionic batteries?

Yep!  I bought the BB's in 2020.  I won the Lithionics battery at the 2025 OTTO's Rally.   I haven’t installed the Lithionics battery yet, because my onboard charger is not approved by Lithionics.  A MP2 is a future project.

Mossey

 

[rideandfly]

Temperature tags or something similar may be a good idea for both batteries, too. Like the idea of being able to check battery temps with the smart phone. 

Here's my current plan to monitor the 100AH BB temperature connected to the load, subject to change, will see.

We have two 100AH BB connected parallel in our Ollie.  Since we have one Victron IP65 Bluetooth SmartShunt, going to connect the + BB battery terminal to the Shunt temperature sensor that the + load/charge cable is also connected to. We don't have an inverter or factory installed solar. Battery charge comes from a Progressive Dynamics 4045 converter/charger or our two 100W solar suitcases. 

The reason I installed a Victron IP65 SmartShunt in the battery compartment is because it's waterproof. Here's a Q&A on the Victron forum about connecting the IP65 SmartShunt to the Victron temperature sensor splicing to the correct IP65 wires:

https://communityarchive.victronenergy.com/questions/213907/temp-sensor-with-smartshunt-500a-ip65.html

 

 

 

 

Edited yesterday at 12:34 AM by rideandfly

[Geronimo John]

Steve great picture!

GJ

Edited yesterday at 03:33 AM by Geronimo John

[Patriot]

Another vid from Will on a new issue with BB’s.🤔

 

Edited 13 hours ago by Patriot