0
\$\begingroup\$

So recently I just bought two new batteries. When I took it from the package I accidentaly dropped one of the batteries on the ground and a little scratch appeared near positive pole. It's actually pretty small scratch and i don't know if you can see it in the picture.

What should I do? Is there a posibility to cause a short?enter image description here

\$\endgroup\$
  • 1
    \$\begingroup\$ How could a scratch (that I can't even see on this picture) possibly cause a short? \$\endgroup\$ – Hearth Jan 27 at 22:01
  • \$\begingroup\$ I don't really know. I'm new to this thing and i don't want to get hurt just because of some little scratch. And actually it's possible to see the scratch but it's unfocused. \$\endgroup\$ – Justis Jan 27 at 22:03
  • \$\begingroup\$ perhaps take a photo which shows the scratch or at least highlight it so we can tell what you're talking about. \$\endgroup\$ – james Jan 27 at 22:04
  • 2
    \$\begingroup\$ This is probably the one time I'll ever say this, but lithium batteries aren't that sensitive to damage. \$\endgroup\$ – Hearth Jan 27 at 22:05
  • \$\begingroup\$ I did some highlight. By looking at the battery i can see some metal shining through. I asked my friend about it and he said that everything will be ok. \$\endgroup\$ – Justis Jan 27 at 22:09
3
\$\begingroup\$

There should be no problem using that battery if you have a compatible socket and you make sure no metal touches that area.

\$\endgroup\$
  • \$\begingroup\$ No problem, just make sure nothing bad happens. \$\endgroup\$ – Norbert Mezei Feb 3 at 12:15
0
\$\begingroup\$

How far did you drop it and how hard was the surface? That can be fatal. They usually self-discharge and lose capacity quicker from this but not necessarily get too hot.

e.g. A drop from 1m with a compression stop of 0.1mm is equivalent to 10,000 g's from the ratio of drop to stop distance measured by it's compression unless it compressed more and flexed back. Then guessing maybe 1m/1mm= 1,000 g.

I proved this formula with accelerometers in the 80's when Operating Systems which were distributed on 5.25" hard disk cartridges from 30cm and there was no visible scratch. Yet it was enough to offset the disk and fail to recover data. Yet the fragility of any object depends on the g vs t fragility boundary curve which is not provided to customers. I resolved the problem with a better sleeve at Syquest.

Batteries have similar small tolerances between edge conductors and this dent is near the edge of the cylinder. So I would expect degradation but not a safety risk.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.