Post Ahpf124HVnjM1Xoh84 by stuartl@mastodon.longlandclan.id.au
 (DIR) More posts by stuartl@mastodon.longlandclan.id.au
 (DIR) Post #Ahpf117n1GwV68RyxU by stuartl@mastodon.longlandclan.id.au
       2024-04-15T09:02:50Z
       
       0 likes, 0 repeats
       
       Got #SpicyPillow ?  This Hema HX-2 does!  Not the first time I've encountered this… I wonder if it's the same battery type as the HX-1?
       
 (DIR) Post #Ahpf124HVnjM1Xoh84 by stuartl@mastodon.longlandclan.id.au
       2024-04-15T11:16:19Z
       
       0 likes, 0 repeats
       
       For what it's worth… the HX-1 we had did the same thing… but took longer to do it.  I documented the battery replacement process.https://vk4msl.com/2020/12/20/replacing-the-battery-in-a-hema-hx-1/
       
 (DIR) Post #Ahpf13gFW7hB1aaWwq by stuartl@mastodon.longlandclan.id.au
       2024-04-29T21:43:03Z
       
       0 likes, 0 repeats
       
       First look inside the patient… looks like the battery is half the size of the one in the HX-1… _and_ of course, they swapped two pins around, so I will _have_ to snip wires this time!But at least they marked the pins clearly.
       
 (DIR) Post #Ahpf14ck0eU1wzxF7Q by stuartl@mastodon.longlandclan.id.au
       2024-05-04T01:31:28Z
       
       0 likes, 0 repeats
       
       Measured up the cell… 90mm×72mm.  Let's see what's available as a replacement.
       
 (DIR) Post #Ahpf15jVsxUjOI8AJU by stuartl@mastodon.longlandclan.id.au
       2024-05-04T01:49:31Z
       
       0 likes, 0 repeats
       
       Looks like this might do the job.It's a bit hard to measure what the thickness _should_ be… but it looks like there is 6mm of space inside the case.https://core-electronics.com.au/3-pin-lipo-battery-for-pijuice-4000mah.htmlThe other option is a 1000mAh cell, but it happens to be 7mm thick, so I think this is the safer choice.  As a bonus, it's an upgrade.
       
 (DIR) Post #Ahpf16XqrnlDuPgMm8 by stuartl@mastodon.longlandclan.id.au
       2024-05-04T01:58:20Z
       
       0 likes, 0 repeats
       
       …and this should solve the pin-out mismatch problem…https://core-electronics.com.au/2-0mm-pitch-3-pin-cable-matching-pair-jst-ph-compatible.htmlThere's another one that just has the socket, but two problems: it uses a different colour coding which could lead to confusion, and if it turns out the socket isn't compatible with the plug on the cell, I'm stuffed.At least if the cell has an incompatible plug, I can (carefully) snip that off and splice this one on.