Some Bits: Nelson's Linkblog
@somebitslinks@tech.lgbt  ·  activity timestamp 2 days ago

Home battery power plant: Batteries installed in people's homes participated in an experiment to provide significant grid power when needed
https://electrek.co/2025/08/04/california-grid-gets-a-record-power-assist-from-a-100k-home-battery-fleet/
#california #electrify #battery #sunrun #tesla #power#pge #+

Melissa Fehr
Sander Meijer
Neil Brown
Melissa Fehr and 2 others boosted
Twoowls Elt
@twoowls73@mastodon.scot  ·  activity timestamp 2 weeks ago
#garmin #battery#ReduceRepairReuseRecycle #repaircafe #ultrarunning #running#watchRepair #scotland #uk

Do you have a running or sports watch that is running out of battery? I am uk based and offer watch battery replacement and button fettling as a service, to keep them out of landfill.

I know that Garmin has excellent customer service, but some people want to keep their existing watches going for longer.

I use quality components from reputable suppliers, get in touch if you want to discuss
Twoowls Elt
@twoowls73@mastodon.scot  ·  activity timestamp 2 weeks ago
#garmin #battery#ReduceRepairReuseRecycle #repaircafe #ultrarunning #running#watchRepair #scotland #uk

Do you have a running or sports watch that is running out of battery? I am uk based and offer watch battery replacement and button fettling as a service, to keep them out of landfill.

I know that Garmin has excellent customer service, but some people want to keep their existing watches going for longer.

I use quality components from reputable suppliers, get in touch if you want to discuss
Dendrobatus Azureus
@Dendrobatus_Azureus@mastodon.bsd.cafe  ·  activity timestamp 3 months ago

It has taken me about 12 minutes to cool down an 18650 battery which was heating up, that it was almost too warm to the touch. The battery was in the charger which clearly doesn't properly communicate with the BMS, creating a fairly dangerous situation
The battery in someone else's hand could have spontaneously combusted into flames igniting the charger and then the wood of the table it was standing on.
I have a habit of standing up, way in the depths of the night, either because I want to go training on my race machines, or because I want to physically feel how warm the batteries are that I'm charging.

Today I'm very glad that I routinely do this, because the BMS failed, a temperature sensor is obviously absent in the charger, and the chemicals would have potentially created a runaway situation because the battery was running this hot for at least a couple of hours!

The 18650 cell delivers the energy that is needed just fine it just cannot charge to 100% anymore

Of course I have marked the cell, so I can now manually remove it from the charger

#Electronics #battery #cell #battery18650#BMS #charger #temperature #heat #sensor

The image features a cylindrical object, likely a bullet casing, lying diagonally on a fabric surface. LLM error it's an 18650 cell. The object is dark brown with a smooth, matte finish, and appears to be made of metal or a similar material. It has a slightly tapered shape, with a slightly wider opening at one end. The fabric background is vibrant red with a floral pattern, including large white flowers with brown and blue accents. The texture of the fabric is visible, suggesting a woven material. The lighting in the image is soft, casting a gentle shadow beneath the object, enhancing its three-dimensional appearance. Ovis2-8B 🌱 Energy used: 0.167 Wh
The image features a cylindrical object, likely a bullet casing, lying diagonally on a fabric surface. LLM error it's an 18650 cell. The object is dark brown with a smooth, matte finish, and appears to be made of metal or a similar material. It has a slightly tapered shape, with a slightly wider opening at one end. The fabric background is vibrant red with a floral pattern, including large white flowers with brown and blue accents. The texture of the fabric is visible, suggesting a woven material. The lighting in the image is soft, casting a gentle shadow beneath the object, enhancing its three-dimensional appearance. Ovis2-8B 🌱 Energy used: 0.167 Wh
The image features a cylindrical object, likely a bullet casing, lying diagonally on a fabric surface. LLM error it's an 18650 cell. The object is dark brown with a smooth, matte finish, and appears to be made of metal or a similar material. It has a slightly tapered shape, with a slightly wider opening at one end. The fabric background is vibrant red with a floral pattern, including large white flowers with brown and blue accents. The texture of the fabric is visible, suggesting a woven material. The lighting in the image is soft, casting a gentle shadow beneath the object, enhancing its three-dimensional appearance. Ovis2-8B 🌱 Energy used: 0.167 Wh