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Bad solder joints = Heat?

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Old 08-06-2011, 04:39 PM
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FE_Chris
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Default Bad solder joints = Heat?

Just wondering about something.....

My Zippy 40c 5000Mah lipos were a bit warm when I pulled them from my AC MC last time I ran, or well, everytime I ran. The packs were about 115-118 degrees. I realized afterward that the soldering zippy did on the packs was sub par and I re-did the 5.5mm bullitts. Just wondering if bad soldering can actually cause the packs to run warm.

On a side note, I figured 200amp discharge packs on a 60amp ESC and 1800kv motor would not even get warm. And yes, the bad solder connections were getting pretty HOT.

Thoughts?
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Old 08-07-2011, 04:07 AM
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Default RE: Bad solder joints = Heat?

The actual solder joints will get warm, as they have a high resistance, so dissipate more power (in the form of heat).

However, bad solder joints on the connectors will not cause the pack to get warm - only the actual soldering will get warm. If the pack is getting warm, it is because you are drawing a high current from it, and the packs internal resiatance is causing the heating.

A
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Old 08-07-2011, 04:47 AM
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Default RE: Bad solder joints = Heat?

Shoot, I thought so. I read somewhere that some lipos need a few cycles before they come in to their own and perform the best. Any info on this? FYI - I never had this heat problem with Enerland packs.
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Old 08-08-2011, 05:32 AM
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Default RE: Bad solder joints = Heat?

Hellow Chris

LiPo's do not need to be cycled and perform excellent from day one.

Ryan
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