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I'm trying to repair a soap dispenser: https://www.simplehuman.com/products/foam-sensor-pump

I opened it up and found the battery was damaged, and I wanted to see if I could replace it. Before I opened it up, I was trying to find a product with the wiring already there. I was able to find batteries with the same specs, but nothing with wires already attached. Will I be able to build a battery myself by like taping wires to either end of a battery? It's unclear what's inside of the blue plastic wrapping

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A O
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    It's a cylindrical cell Lithium-Polymer (or Lithium-Ion -- the terms mostly mean the same thing). You should be able to find something with wires attached, and then splice your connector on (assuming that the connector isn't the problem -- that looks pretty dirty). – TimWescott Apr 14 '21 at 00:51
  • Unfortunately I can't seem to find something with wires attached, it seems to be a pretty ubiquitous battery, but i'm not sure how to query for it with wires attached, any thoughts? i've tried "IR14500 3.7v battery with wires" – A O Apr 14 '21 at 01:14
  • Try searching on "cylindrical cell", then get one with the same dimensions. – TimWescott Apr 14 '21 at 01:48
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    Cut open the plastic around it. From your photo it looks like there may be a BMS under there. There may also be additional markings on the battery itself to reveal what battery chemistry it is based on. – KristoferA Apr 14 '21 at 03:58
  • Any luck? I have the same part and spec numbers and leads on a battery I would like to replace. – Workingit Jan 08 '23 at 02:02
  • unfortunately i decided to just contact Simplehuman for a new unit, which came with a new battery. because it worked so close to water i was afraid i would botch a job myself – A O Jan 09 '23 at 07:22

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The battery seems like a knock-off part since the part number does not match manufacturer's part number. The connector is likely JST PHR-02 and battery seems to be Great Power LIR18650. Adafruit seems to sell an equivalent assembly as #1781 link.

Related link on soldering wires to lithium batteries link

Ernesto
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  • amazing!! thank you! lol i think i'll avoid soldering wires based on steps 1,2 and 3 on that stackexchange post – A O Apr 14 '21 at 01:19
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    I do not think this is an 18650 size cell. Based on the number on the cell wrapper and the cell capacity, it looks to be a 14500 size cell. Similar in size to a standard "AA" cell. – Dwayne Reid Aug 30 '21 at 17:01