Lipo repair

[lincpimp]

Man, this thread just will not die...

The soldering on that pack looks like the stuff I did before I got a decent iron....

If you are not getting any reading thru the wires go directly to the cells where the wires are soldered. Isolate each cell by putting the pos probe on the pos end and the neg on the neg and check each cell. The switch your multimeter to ohms and check the continuity of the balancer wires. I have had a few balancer wires go bad...

If you may have a loose tab on one of the cells. At that point you can toss the pack of have it reconfigured to remove the bad cell (my choice).

Hope this helps.

34 pages, wow. My rc legacy.

[Jahay]

thanks a lot mr pimp :) appreciate the help! i will isolate and check each cell separetly... hopefully ill get it dont for the weekend.

One of my small 3s 35c 3700mah lipos puffed on me big time... i thought it was weird i only got a 2 minute run time out of it, so i check it and thought that this was annoying as i now have no sets of work lipos... so i through a rock at it and it did this

[Finnster]

^^^ That's a sweet pic. Best lipo fire pic ever. Not so much magic smoke, but a ghost fog. I see faces too... ooohhh... scarry....


That joint is a bit ugly. BB16 right on the reflow. May want to clean the flux and dirt off 1st so you don't trap any crap in the solder.

I don't think it needs more solder, looks like plenty on there. May need just a bit on the iron to get the iron to heat the joint properly if you are having trouble. I low power crap iron is not going to do the job tho.

Always check at the cell tabs where possible to check the voltages, then work your way out to see where the break is. Then go with one probe on the pack, and the other on the balance taps going down the line to see where the break is. A paper clip or small pin inserted into the tap will help if you can't get the probe in.

Bit of a repeat of other advice, but all of it was good already