RCCrawler Forums

2500hdon37s · 08-31-2009, 05:06 PM

i have an 8 cell 2/3a size saddle pack that has always worked great untill today it got so hot in the first 5 minutes of crawling it melted the shrink wrap off! always ran it in the same esc, same everything! whats the deal, and i checked for shorts with another batt and looked but it had to have short in the batt so..... is it toast?

gernade · 08-31-2009, 05:12 PM

Did they swell up? If they did = TOAST!

Rick Findley · 08-31-2009, 05:21 PM

Yep! It's a goner!

It could have been dropped or bumped, it doesn't take much of a dent/crushed spot to cause an internal short on some cells. Look as the positive end of the cells, look for a strange foreign matter, the cell may have vented, that will confirm it!

If you get the opportunity, discharge the cell, and cut in half. You will get a good visual of how fagile they can be....there is a lot of action going on inside the cells, from heat - contraction and the chemical action/reactions from charging and discharging. One look will explain it all!

You could possibly take another pack and select the best cells and make 1 reasonable practice/bashing pack.

2500hdon37s · 08-31-2009, 07:25 PM

no discharge or anything no physical damage other than the melted shrink wrap but i plugged it in to my esc a seamed to work just fine, so i taped it up and it charged just fine

JohnRobHolmes · 09-01-2009, 07:31 AM

What motor? Your battery resistance may be climbing.

2500hdon37s · 09-01-2009, 02:53 PM

35t, and havent had a problem with the same battery pack just a 6 cell, and ever scince i retaped the battery ive ran it 3 times and not one heat problem scince just warm when charging and running

08-31-2009, 05:06 PM	#1
2500hdon37s I wanna be Dave Join Date: Mar 2009 Location: sittin in the sky Posts: 4,630	is my battery toast? i have an 8 cell 2/3a size saddle pack that has always worked great untill today it got so hot in the first 5 minutes of crawling it melted the shrink wrap off! always ran it in the same esc, same everything! whats the deal, and i checked for shorts with another batt and looked but it had to have short in the batt so..... is it toast?

09-01-2009, 02:53 PM	#6
2500hdon37s I wanna be Dave Join Date: Mar 2009 Location: sittin in the sky Posts: 4,630	35t, and havent had a problem with the same battery pack just a 6 cell, and ever scince i retaped the battery ive ran it 3 times and not one heat problem scince just warm when charging and running Last edited by 2500hdon37s; 09-01-2009 at 06:16 PM.

08-31-2009, 05:12 PM	#2
gernade Newbie Join Date: Aug 2009 Location: upland Posts: 41	Did they swell up? If they did = TOAST!

08-31-2009, 05:21 PM	#3
Rick Findley Newbie Join Date: Dec 2008 Location: Payson Posts: 33	Yep! It's a goner! It could have been dropped or bumped, it doesn't take much of a dent/crushed spot to cause an internal short on some cells. Look as the positive end of the cells, look for a strange foreign matter, the cell may have vented, that will confirm it! If you get the opportunity, discharge the cell, and cut in half. You will get a good visual of how fagile they can be....there is a lot of action going on inside the cells, from heat - contraction and the chemical action/reactions from charging and discharging. One look will explain it all! You could possibly take another pack and select the best cells and make 1 reasonable practice/bashing pack.

08-31-2009, 07:25 PM	#4
2500hdon37s I wanna be Dave Join Date: Mar 2009 Location: sittin in the sky Posts: 4,630	no discharge or anything no physical damage other than the melted shrink wrap but i plugged it in to my esc a seamed to work just fine, so i taped it up and it charged just fine

09-01-2009, 07:31 AM	#5
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	What motor? Your battery resistance may be climbing.

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