2013 Precedent conversion to Extreme Team Lithium in 2022

[WalterM6]

Keeping the battery warm is more of an issue for charging than discharging.

It also important to remember that just because the air temp is above 0°C it is still not safe to charge. The internal temps of the batteries might still be below 0°. Wait until the battery temperature gets to 10°C as indicated by the BMS.

[UncleJerm76]

Originally Posted by LakePlacidGolfer

…There was an hour or so when I couldn't figure out why the fuse block wasn't getting any power from the red accessory wire of the reducer. Had to set everything aside and go get a cup of coffee. Even went so far as to see if the reducer was still returnable on Amazon.

Then, a light bulb went off in my head and I realized I never turned the run/tow switch to run. Once I did, the fuse block had 12v of power.

I had to chuckle at this, that run/tow switch STILL gets me once and a while! :) Congrats on a great pack!


Sent from my iPhone using Tapatalk

[Pat911]

Originally Posted by WalterM6

It also important to remember that just because the air temp is above 0°C it is still not safe to charge. The internal temps of the batteries might still be below 0°. Wait until the battery temperature gets to 10°C as indicated by the BMS.

But if the battery has been designed and built correctly the BMS will prevent charging if the batteries are too cold. Just turn the charger on and when the batteries are warm enough the BMS will allow them to charge. Be sure the battery has low temp charging cutoff before you do this. Sensor placement is critical here though. It should be between cells, in the middle of the pack if possible.

Cheers
Pat.

[Volt_Ampere]

I wouldn't trust drop-in's to have a temp probe in the proper spot. I wouldn't charge if there is any chance that your pack is below 0 degC.

[Pat911]

I agree, it is a real shame though. The cost difference between a correctly placed sensor and one just taped to the outside of a cell is minimal if anything. Drop in batteries, whether they be 12v, 24v, 48v, whatever, are now mature enough that correct low temperature charging cutoff should not be an issue. It is a very poor manufacturer that still doesn't implement it correctly.

[dundeebarnbuggy]

Thermal sensor placement could [from my thinking, but correct me if i'm wrong!] would need at least 2 sensors. Battery cools from the outside in and warms the same way unless one is using it heavily. So a sensor in the middle of the packs/plates only tells core temperature. The outside cells could be WAY warmer or colder depending on which way the ambient temp is headed.

[Pat911]

Yep. Many BMS's will allow you to connect two or even more sensors.

[LakePlacidGolfer]

After being told by Extreme Team they would send installation and BMS instructions on Jan 23, I received an email from Blake Sherrouse on Feb 2nd. In the email, he apologized for the delay in getting me the instructions and included the attached PDF document.

The PDF has the title: 48 Volt Lithium Battery Installation, 2014+ Club Car Precedent and Onward with shunt connection

I have a 2013 Club Car Precedent and the battery does not have a shunt connection.

On page 4 of the PDF, there is a section on the Battery Management System (BMS). The instructions say to download the SMART BMS app, but my lithium does not connect to this app. This section of the PDF also states to download the guide on how to use the app at www.extemeteamcarts.com/BMSdownload, which is a dead link.

[LakePlacidGolfer]

Brought the six used lead acid 8v batteries (Trojans that were 5 years old) to a local battery shop and got $8 each ($48 total).

[dundeebarnbuggy]

Wow. Sold mine this past spring for 25$ can each.